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<strong>Pactio</strong> <strong>Technologies</strong> Limited is a private limited <strong>company</strong> incorporated in England and Wales with <strong>company</strong> registration number 13468854, whose registered office is at Hamilton House, 1 Temple Avenue, Temple, London, EC4Y 0HA. End User T&amp;Cs · Privacy Notice · Cookie Notice

Pactio - The multi-sided platform for private markets transactions

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<strong>Pactio</strong> | 321 followers on LinkedIn. The tech engine for private equity deals. We&#x27;re hiring! | Private equity deal closings aren’t just painful: they&#x27;re a black box even to those closest to the transaction, reliant on software over 20 years out of date. The result: systemic inefficiencies ...

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<strong>Pactio</strong> is a fintech startup that provides automation software to transform the way Private Equity deals are executed.

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Pactio - Frictionless private equity deal closings

Free and open <strong>company</strong> data on Czech Republic <strong>company</strong> <strong>Pactio</strong> <strong>Technologies</strong> s.r.o. (<strong>company</strong> number 05935130)

Pactio Technologies s.r.o. :: Czech Republic :: OpenCorporates

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Lorenzo Foglianti Spadini is the Co-Founder and Chief <strong>Technology</strong> Officer of <strong>Pactio</strong>. He attended the University of Cambridge.

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Pactio's software revolutionizes Private Equity deal execution, aiming to be the top network for capital exchange

Pactio Technologies

The Deep Work Hypothesis and its Limitations

HackerNoon Reporter: Please tell us briefly about your background. I have a degree in Aerospace Engineering. I worked as a software developer at Amazon, and a Program Manager for Microsoft before starting deetz. What's your startup called? And in a sentence or two, what does it do? We are deetz (short for details) and we show people what’s happening in their city right now! Everything on the app expires in 24hrs so you can get “right now” information on daily happy hours, live events, food specials, and more! What is the origin story? We launched during COVID and all our favorite restaurants were shutting down left and right. We wanted to support local businesses but didn’t have a good way to find the latest information on if they’re open, doing curbside pickup, or have their patio open without having to follow 100s of Facebook pages, Instagram, and outdated city websites. Google was just a list of “10 places near you” but people wanted to know “what are they offering today!”. So we built deetz to bridge that gap. Basically your Netflix for live events, happy hours, and more! We generated about $10,000 in economic activity each week in Cedar Rapids, Iowa alone! What do you love about your team, and why are you the ones to solve this problem? Each and every one of us faced the exact same problem and feeling like our “city sucked because there is nothing to do” or always finding awesome things after the fact like a cool concert or art exhibit. We are basically building deetz for our own selfish need to live our best life in the city we live in! I have a strong technical background from my experience working at Microsoft and we have an amazing growth hacker, Grace Rigdon, who worked in Meredith Corporation and Hearst Corporation and helped scale the app from Cedar Rapids to all across Iowa and strategizing a national expansion! If you weren’t building your startup, what would you be doing? I’d be learning how to bake, knit, and surf! Or just about anything a hipster like me does these days. At the moment, how do you measure success? What are your core metrics? We measure success through our “4-week comeback” metric. It defines what percentage of users in a given 4 week period using the at least 2 weeks. We chose this metric because that’s the cycle we notice people have when they go out for a happy hour, brunch, live events, etc. Like they do it at least once every 2 weeks. What’s most exciting about your traction to date? The most exciting thing is that people have been traveling to over 100+ cities across the U.S. and still got on deetz to see what’s happening in their new place! This unlocked a completely new market for us to focus on. Tourist destinations and travelers associate deetz as “not just where I live” but “It’s that one friend in the group who knows what’s going on no matter where we travel”. What technologies are you currently most excited about, and most worried about? And why? I am extremely excited about the growing adoption of AR with everyday use. We believe that’s the future, if the future is to help people live their best life. We want people to pull out their deetz app, scan around, and see what’s happening inside each businesses without having to go in! I worry about the dark patterns in the UI/UX these days. VCs seem to focus more on “who can keep the consumer’s attention the most” which leads to the perils of Instagram and TikTok, when it’ll be beneficial to look at it from the lens of “How productive and happy with their life can you keep a consumer?” because helping people live a more fulfilling life leads to long term retention vs short term highs. We shouldn’t strive to create “addicts”, but to help with how engaged people are with each other in real life. What drew you to get published on HackerNoon? What do you like most about our platform? I’ve been following HackerNoon from the Medium days, transitioning to its own platform, and never stopped rooting for you guys. The stories are thorough and different from similar tech publishers out there and I feel like I walk away with some learning each time vs. feeling like I just read an article that was more of an FYI. What advice would you give to the 21-year-old version of yourself? Breathe. Live. Experience. 4 years of college will fly by. Doing 20 things at the same time isn’t the measure of success but taking a moment to appreciate all the experience you had that day, past week, month, is crucial. Also, don’t get too drunk! What is something surprising you've learned this year that your contemporaries would benefit from knowing? I learned that if you’re a first-time founder, everything is stacked against you. You might have the best traction and story but still get turned down. You’ll also read stories about second-time founders raising millions in seed rounds while their idea is still on a napkin. Don’t take it personally. Those who are raising millions pre-seed as second-time founder struggled their first time. It’s okay and doesn’t reflect in your idea or capability as a person. It’s a numbers game and takes talking to 200 Angels/VC to get 1 yes. Vote for deetz as the . best startup in Cedar Rapids

Startup Interview with Raghul Ethiraj, CEO of deetz

Learning to Recruit as a Software Engineer

Welcome to another exciting installment of our "Behind the Startup" series, where we delve deep into the stories, strategies, and visions that fuel some of the most innovative startups in the tech world. Today, we are thrilled to have Andrea Lerdo, the Executive Director of the Palm Foundation, joining us. Andrea's journey is a fascinating blend of finance, technology, and creative exploration, making her a pivotal figure in the evolving Web3 space. With her extensive background in the financial industry, including a significant role in JPMorgan’s Blockchain initiative, and her passionate involvement in blockchain technology for societal betterment, Andrea is here to share her insights and strategic vision for Palm Network. So, let's dive into the world of decentralized technology and understand how Palm Network is shaping the future of Web3! Andrea Lerdo Unveils the Visionary Future of Palm Network in Web3 Ishan Pandey: Hi Andrea, It's great to have you here for our "Behind the Startup" series. Can you share with us about your background and what inspired you to found Palm Network? Can you outline your strategic vision for the continued growth and development of Palm Network in the Web3 space? Hi Ishan, I'm Andrea Lerdo, Executive Director of the Palm Foundation. I'm excited to be here for the "Behind the Startup" series. With over 15 years in the financial industry, I've been instrumental in building new financial infrastructures and innovative products. My notable experience includes leading the digitalization of law and automating controls, and serving as part of JPMorgan’s Blockchain initiative, Onyx, as the Head of Business Architecture and Marketplace. Andrea Lerdo: The inspiration for founding the Palm Foundation came from my passion for decentralization and how blockchain can give access to people shut out of the current system by design and to uplift historically marginalized creative communities in Web3 and this Web2 space. We are missing half of culture, all the people unbanked or off the grid. My vision is for web3 and dapps to act in the same way cellphones act for landlines. Many parts of the world who could or didn’t need landlines, went directly to cell phones. In the same way the hope is for existing web users to transition to Web 3 and for new people onboarding today to skip web2 and move directly to web3 and decentralized applications. Thus, the mission of the Palm Foundation is to democratize art and technology, fostering creativity, and supporting artists from underrepresented backgrounds. Our strategy at Palm Foundation focuses on amplifying the work of creators, fans, brands and developers within the Web3 ecosystem, and broadening the usage of the Palm Network through partnerships, grants, and scholarship programs. Education is a key pillar, with our Palm Academy providing Web3 education across various topics. Looking ahead, the Palm Network is undergoing significant technological advancements. Initially using a Proof-of-Authority (PoA) mechanism, we transitioned to a Proof-of-Stake (PoS) chain in August 2023, enhancing our network's security and decentralization. The next big step in 2024 is transitioning to a Polygon ZK Supernet. This move will scale our network's capacity significantly, leveraging zero-knowledge proofs (zkEVMs) to improve scalability and privacy while maintaining Ethereum compatibility. This strategic shift aligns with our goal to make NFT-related activities more accessible and efficient, particularly in the realms of creators, sports, and entertainment. So, our vision at the Palm Foundation is to create an inclusive, innovative environment where culture & creativity meets technology. We're passionate about the future and committed to making a significant impact in the Web3 space, continually adapting and growing to meet the evolving needs of our community. Ishan Pandey: What initiatives are in place to support and attract diverse projects and platforms across various creative disciplines? The Palm Foundation has developed: Andrea Lerdo: comprehensive Governance as-a-service Toolkit: the Palm Collective, marking a significant advancement in the realm of decentralized autonomous organizations (DAOs). The Palm Collective, built and supported by both , a leading blockchain and web3 software company and , a growth and development team in support of the Polygon network, empowers users to create, manage and govern their Palm Communities by leveraging blockchain technology. It ushers in a new era where creators have control over their outputs and communities, and brands can transform user experiences into community exercises, giving users or fans a voice. The Palm Collective: Consensys Polygon Palm Foundation in partnership with Patio by ZsONAMACO: , the non-profit nurturing projects developed on Palm Network, is offering a $45,000 grant to artists selected by Patio curatorial committee. The award will be shared among artists chosen to have installations exhibited at Patio by ZsONAMACO during the Art Baja California art fair. Palm Foundation Palm Foundation in partnership with LagosMX / Momentum: The partnership introduces an expanded initiative for 2024, inviting international artists and curators from around the world to participate in the Momentum-Lagos Artist Residency Program. This collaborative initiative lies in the 20 grants offered by the Palm Foundation, providing artists with up to $750 in 2024 to support their residencies in Berlin or Mexico City. A distinctive feature of the Momentum-Lagos program is its integration of blockchain technology and (NFTs). To be eligible for a grant, artists are required to commit to creating 3-5 NFTs as part of their residency project. The Palm Foundation will provide technical assistance for NFT minting, ensuring that artists can navigate this innovative space with confidence. Non-Fungible Tokens Ishan Pandey: In what ways does PalmDAO empower individuals to shape their destiny through blockchain technology? The Palm Collective Toolkit offers a suite of tools and modules designed to overcome the limitations of traditional DAOs. This enables Palm Communities to create their unique governance systems, influencing the broader Palm Collective ecosystem while maintaining independence and developing governance structures tailored to their own needs. Andrea Lerdo: It also introduces the PalmID, a feature that lets users establish an identity on the Palm Collective protocol. This identity, backed by multiple verifiers, enhances the legitimacy of user participation and strengthens the integrity of the collective’s governance protocol. The protocol rewards users who chose to add verifiers, allowing the user to unlock more functionality. Among other advantages introduced by the User’s Toolkit will be the ability for users to create and collect soulbound tokens called Proofs like badges for their contributions to the Palm Collective, Palm Communities and/or individual initiatives. These Proofs can serve as totems of recognition and membership to the Palm Collective and Palm Communities (SubDAOs) granting exclusive access, voting rights or privileges within an ecosystem. In a significant departure from other web3 platforms, voting on the Palm Collective has little to no cost, removing barriers to participation and fostering a more inclusive environment. The platform is committed to evolving alongside the rapidly changing landscape of decentralized governance, ensuring a vibrant ecosystem of innovation. The Palm Collective incentivizes feedback from the community as new features are enabled with the aim of making the Palm Collective build and design a community driven effort. Another cool feature is the unique contribution-weighted voting system, tied to the Proofs collected by the user. In order to unlock votes, users will require both Proofs and the native $PALM token, establishing a more democratic system than traditional DAO models which match one token to one vote systems.  Together, these features ensure an democratized and impactful decision-making process, giving users the chance to have their voices heard in the management of the Palm Collective and respective Palm Communities. PolyArts Community:  an assembly of global artists representing a broad range of mediums of Polygon, invites all artists to participate in the bleeding-edge intersection of technology, art, and community. All artists are encouraged to join in celebrating a dedicated digital home for creators where value can be dictated by artists themselves. PolyArts Call for Artistic Creators Open February 15th to Feb 28rd, 2024: Collect the Poly Arts Membership Proof & Submit your art for the chance to win a $1000.00 dollar grant by the Palm Foundation. Palm Academy Community: The Palm Academy Mission is to provide high-quality education that equips people with the skills and knowledge they need to thrive in the web3 era. At the Palm Academy we are all students and we are all teachers. Ishan Pandey: Can you elaborate on Palm Foundation's plans to improve global access to Web3 education and training, and how do you intend to achieve this goal? Could you elaborate further on the factors influencing the decision to move from PoA to PoS and the current progress in migrating to a zkEVM? The Palm Academy aims to move from “upload resume” to “connect wallet”. By Collecting Attendance of Course Completed Proofs, people can show the skills they have learnt by taking Palm Academy courses, giving the broader palm community visibility of such skills. Thus, it's the community that will determine if such skills match a role or need in the broader Palm ecosystem. Moving away from a centralized form of certification / education and into a community weighted recognition of our skills. Andrea Lerdo: The Proofs collected by attending or completing Palm Academy courses will give the user the ability to unlock votes within the Palm Academy Community in order for the community to decide what courses and training they want to activate in the future. If you have something to teach and want to share it with the community, please submit your Class Syllabus at . https://academy.palmfdn.org/ Ishan Pandey: What role do you see partnerships playing in the future success of Palm Foundation and PalmDAO? Andrea Lerdo: Palm is on the road to radical decentralization which is why we migrated from a POA to a POS chain, now a fully decentralized chain on Polygon technology that allows anyone to become a validator on the network. In alliance with two of the largest technology partners in web3: Polygon and  ConsenSys. This allows for a network that is very fast and interoperable, robust with low waste, specifically designed for the needs and transactions of communities. We are democratizing the ability for creators to connect and gather their community directly through a deep investment in building low-code tools and platforms. As well as using those tools to educate people about the technology and uses of the Palm Network. Palm is the home of global sports, entertainment, and creative IP because these partners trust our foundational technology and the teams who build on it. The scale of these partners delivers immediate value, reducing the risk of creating or building with our tools and transacting in the Palm ecosystem. Ishan Pandey: How does Palm Network ensure compliance with existing and anticipated regulations related to blockchain and cryptocurrency? Andrea Lerdo: Palm understands the difficult regulatory environment we are in, which is why we are planning for the most decentralized token launch ever. At launch the early contributors of the network will mint their token allocation directly from the Genesis contract, and the remainder token supply will go directly to the Palm Collective (DAO) treasury. Additional tokens will be claimable or airdropped to the community and validator reward reserves, instead of having the token allocated to the Foundation and then from the foundation to the Contributors. Ishan Pandey: How does Palm Network contribute to the broader global impact of Web3, and what role does it play in shaping the next generation of the digital and creative landscape? Andrea Lerdo: Palm is the low code no code chain that allows for the web2 or crypto-curious user to use blockchain solutions without a developer or coding background. Ishan Pandey: What challenges do you foresee for Palm Network in the evolving Web3 space, and how do you plan to navigate these challenges? Andrea Lerdo: Onboarding and adoption are the main challenges we face as an ecosystem, we hope that the creators, brands and fans who chose to build on Palm find in our network the home for them to explore web3 in a friendly, seamless and secure way. Don’t forget to like and share the story! Vested Interest Disclosure: This author is an independent contributor publishing via our brand-as-author program. Be it through direct compensation, media partnerships, or networking, the author has a vested interest in the company/ies mentioned in this story. HackerNoon has reviewed the report for quality, but the claims herein belong to the author. #DYOR

Behind the Startup: Andrea Lerdo's Journey from JPMorgan to Blockchain Pioneer

স্টার্টআপের পিছনে: জেপিমরগান থেকে ব্লকচেইন পাইওনিয়ার পর্যন্ত আন্দ্রে লারডোর যাত্রা

Hinter dem Startup: Andrea Lerdos Reise von JPMorgan zum Blockchain-Pionier

Detrás de la startup: el viaje de Andrea Lerdo de JPMorgan a Blockchain Pioneer

Derrière la startup : le parcours d'Andrea Lerdo de JPMorgan à Blockchain Pioneer

स्टार्टअप के पीछे: एंड्रिया लेर्डो की जेपी मॉर्गन से ब्लॉकचेन पायनियर तक की यात्रा

スタートアップの裏側: JPモルガンからブロックチェーンのパイオニアへのアンドレア・レルドの旅

스타트업 비하인드: JPMorgan에서 블록체인 개척자로 향하는 Andrea Lerdo의 여정

Por trás da startup: a jornada de Andrea Lerdo do JPMorgan ao pioneiro do Blockchain

За стартапом: путь Андреа Лердо от JPMorgan до пионера блокчейна

Startup'ın Arkasında: Andrea Lerdo'nun JPMorgan'dan Blockchain Öncülüğüne Yolculuğu

Đằng sau công ty khởi nghiệp: Hành trình của Andrea Lerdo từ JPMorgan trở thành người tiên phong về Blockchain

初创公司背后：Andrea Lerdo 从摩根大通到区块链先锋的历程

As our technology becomes increasingly connected through the rise of and cloud computing, we have not only benefited our lives but our planet as well. Smart farming has taken the world by storm as farmers have learned to embrace the world of IoT, not reject it. These farmers have been able to precisely monitor the conditions of their produce as well as control every milliliter of their resources. IoT Agri-Tech companies such as have been able to solve the problem of a rapidly growing population’s need for sustainable food and farming: Illuminum Greenhouses “We construct affordable modern greenhouses and install automated drip irrigation kits for small holder farmers by using locally available materials and solar powered sensors.” -Illuminum Greenhouses Kenya As our world population is soon to reach 10 billion, we need to more greatly adopt technological, conservative methods for feeding the masses and IoT is the way to go. We at PubNub have worked with numerous Agri-tech companies such as smart tractors, climate monitoring and many more. We have even written articles demonstrating how to into smart agriculture. utilize the power of cloud computing As for inspiration for this project, we have created this demo project that demonstrates how our real-time data infrastructure can be used to create self-sustaining botanical systems. What You’ll Need 3–6V Water Pump Silicone Tubing 5V Power Supply (Phone Charging Cable will do) Raspberry Pi 3 Temperature/Humidity Sensor Soil Moisture Sensor Setup Wiring First and foremost, if you don’t have a dedicated 5V power supply, you can easily make one out of an old phone charging cable. Simply, snip the head off of the phone adapter and strip about 5 inches of the rubber casing to expose the wires. The wires will be flimsy, so soldering some female header wires to the exposed phone cable wires will be a good idea. It’d be a good idea to do this for the pump’s exposed wires as well. If you’re worried about the silicon tubing not being an air-tight fit on the pump, you can always hot glue around the nosel to create a perfect seal. Now you’re ready to start wiring up your components! Follow this diagram and make sure you plug in extra male-male wires to the female headers we soldered earlier to connect everything together. Notice that we used a relay in our circuit as the Raspberry Pi can only safely tolerate input voltages under 3.3V. Therefore, we need to isolate our 5V power supply to avoid any damage to the Pi. Hardware Pump The pump is a submersible water pump, meaning that it must be completely submerged in a water reservoir in order to pump water. Therefore, for this project, you will need to leave out a bowl (or any method for a reservoir) next to the plant at all times. NOTE: It’s okay to get the wire tips wet as long as none of the water gets on the RPI! DHT Sensor The DHT11 temp/hum sensory is a standard sensor that does not need to be in any particular location, besides being in the same environment as your plant. Since temperature and humidity do not vary greatly within a 5 ft radius, it’s okay to just leave the sensor plugged into the RPI and not right next to the plant. Soil Moisture Sensor The soil moisture sensor is a standard moisture sensor that outputs a voltage when wet, and none when dry. You can adjust the sensitivity of the sensor with the potentiometer located on the sensor. Let’s Get Coding! Before you do anything, make sure you so we don’t run into any problems down the road. sign up for a free PubNub account Step 1: Enable SSH Secure Shell protocol (SSH) allows users to remotely access their Raspberry Pi terminals from their computers over wifi. If supplemented with GitHub, users can push code from their computers to a remote repository, SSH into the Pi terminal, and pull the code wirelessly. This allows for a quicker and smoother development process. To enable SSH on your RPI, follow the simple and quick instructions. Step 2: Download Device Libraries and Dependencies While we may have 3 devices, we only need to read analog voltages from 2 of them. The pump only needs to operate on a GPIO switch. Therefore, we only need to pull dedicated device libraries for the Temp/Hum sensor and soil moisture sensor. Remember that these libraries must be installed onto the RPI by SSH-ing into your device and running the commands below. NOTE: DHT Temperature Humidity Sensor In your project’s directory, clone and enter the sensor’s code repository. git clone cd Adafruit_Python_DHT https://github.com/adafruit/Adafruit_Python_DHT.git Install some Python dependencies. sudo apt-get upgradesudo apt-get install build-essential python-dev Now, install the sensor’s library. sudo python setup.py install This should compile the code for the library and install it on your device so any Python program can access the Adafruit_DHT python module. If you want to quickly test the sensor to see if the sensor works enter these commands: cd examples sudo ./AdafruitDHT.py 2302 4 You should see a reading similar to this: Raspberry Pi GPIO Library For our submersible pump, we need to operate an voltage of 1 or 0 from the RPI to turn it on. Conversely, the soil moisture sensor gives the RPI an voltage 1 or 0, depending on whether it is wet or dry. Both of these functions require the use of the RPI’s GPIO pins. output input Since we’ll be coding in Python, it will be useful to install the GPIO Zero library, which will allow us to make simple function calls to activate the pins. sudo apt install python-gpiozero Step 3: Build Your App with PubNub Functions\ The full code for this project is located in this repository for reference: https://github.com/Cakhavan/IoT_Plant First, let’s import our libraries and other dependencies to enable the devices and PubNub Functionality #Device Librariesimport sysimport Adafruit_DHT from gpiozeroimport LED, Button from timeimport sleep #PubNubimport pubnub from pubnub.pnconfigurationimport PNConfiguration from pubnub.pubnubimport PubNub from pubnub.callbacksimport SubscribeCallback from pubnub.enumsimport PNOperationType, PNStatusCategory Next, we’ll need to initialize our sensors and pumps to their corresponding RPI pin numbers #Pump is connected to GPIO4 as an LEDpump = LED(4) #DHT Sensor (model type 22) is connected to GPIO17sensor = 22pin = 17 #Soil Moisture sensor is connected to GPIO14 as a buttonsoil = Button(14) NOTICE: Since the pump will need to be sent an output voltage of on or off (like we would typically do with LEDs) we initialize it as an LED instance. Additionally, we initialized the soil moisture sensor as a button for it will send out a continuous input voltage of a 1 (like when holding down a button) when wet. It will also be a good idea to set some initial conditions for when the program first boots up: a flag variable to toggle the state of the program to Auto mode or Manual mode and turning the pump off when the program boots up. #flag variable to toggle between Auto and Manual modeflag = 1 #always make sure the program starts with the pump turned off#(conventions are backwards for the pump i.e. .on() 'on') 'off' and #.off() pump.on() In order to make sure that our IoT Plant can communicate with a client, we need to enable PubNub’s 2-way pub-sub capability. To make sure we can receive messages we need to add a listener to handle the incoming messages and declare a subscription to listen in on a particular channel. class MySubscribeCallback(SubscribeCallback):def status(self, pubnub, status):pass# The status object returned is always related to subscribe but could contain# information about subscribe, heartbeat, or errors# use the operationType to switch on different optionsif status.operation == PNOperationType.PNSubscribeOperation \or status.operation == PNOperationType.PNUnsubscribeOperation:if status.category == PNStatusCategory.PNConnectedCategory:pass# This is expected for a subscribe, this means there is no error or issue whatsoeverelif status.category == PNStatusCategory.PNReconnectedCategory:pass# This usually occurs if subscribe temporarily fails but reconnects. This means# there was an error but there is no longer any issueelif status.category == PNStatusCategory.PNDisconnectedCategory:pass# This is the expected category for an unsubscribe. This means there# was no error in unsubscribing from everythingelif status.category == PNStatusCategory.PNUnexpectedDisconnectCategory:pass# This is usually an issue with the internet connection, this is an error, handle# appropriately retry will be called automaticallyelif status.category == PNStatusCategory.PNAccessDeniedCategory:pass# This means that PAM does allow this client to subscribe to this# channel and channel group configuration. This is another explicit errorelse:pass# This is usually an issue with the internet connection, this is an error, handle appropriately# retry will be called automaticallyelif status.operation == PNOperationType.PNSubscribeOperation:# Heartbeat operations can in fact have errors, so it is important to check first for an error.# For more information on how to configure heartbeat notifications through the status# PNObjectEventListener callback, consult <link to the PNCONFIGURATION heartbeart config>if status.is_error():pass# There was an error with the heartbeat operation, handle hereelse:pass# Heartbeat operation was successfulelse:pass# Encountered unknown status type def presence(self, pubnub, presence):  
    pass  # handle incoming presence data  

def message(self, pubnub, message):  
    if message.message == 'ON':  
    global flag  
    flag = 1  
    elif message.message == 'OFF':  
  global flag  
  flag = 0  
    elif message.message == 'WATER':  
    pump.off()  
    sleep(5)  
    pump.on() pubnub.add_listener(MySubscribeCallback())pubnub.subscribe().channels('ch1').execute()Then, to enable sending out messages, we declare a publisher callback def publish_callback(result, status): pass Now, we need a method to check whether our sensor is wet or dry. Since we declared our soil sensor as a button, the function call “is_held” just means that we should check to see when the soil sensor is outputting a continuous “1” (is dry). def get_status():#Soil sensor acts as button. is_held == sensor outputting a 1 for drynessif soil.is_held:print("dry")return Trueelse:print("wet")return False Next, let’s implement the meat of our program. We’re going to need the RPI continuously polling to check sensor data, so let’s implement a continuous while loop: while True: We now need to set state conditions that check whether or not the flag variable is a 1 or a 0 (aka in auto mode or manual mode) if flag == 1:#to be implementedelif flag == 0:#to be implemented Just like we did before, let’s grab data from the DHT sensor and also print it to the terminal if flag == 1:# Try to grab a sensor reading.  Use the read_retry method which will retry up# to 15 times to get a sensor reading (waiting 2 seconds between each retry).humidity, temperature = Adafruit_DHT.read_retry(sensor, pin)DHT_Read = ('Temp={0:0.1f}*  Humidity=                              {1:0.1f}%'.format(temperature, humidity))print(DHT_Read) Now we can publish that data to PubNub for future IoT use. We’re going to publish on a specific channel so let’s publish to something called “ch2” since “ch1” is reserved for listening for the flag variable. pubnub.publish().channel('ch2').message([DHT_Read]).async(publish_callback) Then check the status of the soil sensor and turn the pump on or off accordingly wet = get_status()if wet == True:print("turning on")pump.off()sleep(5)print("pump turning off")pump.on()sleep(1)else:pump.on()sleep(1) NOTE: Remember the backwards convention of the .on() and .off() method call Lastly, let’s implement the manual mode elif condition, which is just making sure the pump is always off elif flag == 0:pump.on()sleep(3) Step 4: How to Upload Your Code Like we discussed in the previous section on the use of Git, you should always commit your code to your repository and then pull it to your Raspberry Pi. The process always follows this order 1.) Save your code on your computer 2.) Commit it to the cloud using these commands git add .git commit -m "updates"git push 3.) SSH into your RPI and cd into the proper directory ssh pi@<YOUR IP ADDRESS>cd <your directory> 4.) Pull the code from the cloud and run it git pull python Plant.py Step 5: Create a Client We’re now going to create a front-end HTML page to interact with our IoT plant and later visualize its data in step 6. We will build something that looks like this. First, let’s start with the 3 buttons that will put the Plant in either the auto state, manual mode state, or water plant state. This will be done by having each button publish a message of which the plant will change its flag variable accordingly. Let’s first give our page a title <!DOCTYPE html><html><body><h1>IoT Plant</h1></body></html> In the body of your HTML file, insert 3 buttons that publish messages with the PubNub SDK like so <button type="button" onclick="publish('ON')">Auto Mode ON</button><button type="button" onclick="publish('OFF')">Auto Mode OFF</button><button type="button" onclick="publish('WATER')">Water Plant</button> Below those buttons, let’s have our website be continuously updating the screen with the exact temperature humidity data published by the “ch2” channel declared in step 4. In order to do this, we give an id named “sensorData” to a <p> tag so that the program can later inject the content of the <p> tag, using the “getElementByID” and “changeInnerElement” function calls. You’ll see what I’m talking about in a moment. <p id="sensorData">Temperature and Humidity Data</p> Now let’s import the PubNub JavaScript SDK in order to actually use that “publish” method and other methods. <script src="https://cdn.pubnub.com/sdk/javascript/pubnub.4.20.2.js"></script> Then instantiate a PubNub instance with your API keys var pubnub = new PubNub({publishKey : 'YOUR PUB KEY',subscribeKey : 'YOUR SUB KEY',}); Then create a publishing call back to publish the button data to the RPI. Notice how we reserved “ch1” for button data and “ch2” for RPI data. function publish(a){var publishConfig ={channel : "ch1",message : a};pubnub.publish(publishConfig, function(status, response){console.log(status, response);}); } Next, we instantiate a listener and subscriber to get the RPI sensor data. Notice the line that uses the “getElementById” and “innerHTML” function calls introduced earlier. This allows us to take any PubNub message and update any variable on the screen with its respective id tags. This is great for real-time IoT dashboards! pubnub.addListener({message: function(m) {// handle messagevar channelName = m.channel; // The channel for which the message belongsvar channelGroup = m.subscription; // The channel group or wildcard subscription match (if exists)var pubTT = m.timetoken; // Publish timetokenvar msg = m.message; // The Payloadvar publisher = m.publisher; //The Publisher//inject the sensor data msg into the sensorData tag declared earlier for real-time updatesdocument.getElementById("sensorData").innerHTML = msg;console.log(msg)},presence: function(p) {// handle presencevar action = p.action; // Can be join, leave, state-change or timeoutvar channelName = p.channel; // The channel for which the message belongsvar occupancy = p.occupancy; // No. of users connected with the channelvar state = p.state; // User Statevar channelGroup = p.subscription; //  The channel group or wildcard subscription match (if exists)var publishTime = p.timestamp; // Publish timetokenvar timetoken = p.timetoken;  // Current timetokenvar uuid = p.uuid; // UUIDs of users who are connected with the channel},status: function(s) {var affectedChannelGroups = s.affectedChannelGroups;var affectedChannels = s.affectedChannels;var category = s.category;var operation = s.operation;}});pubnub.subscribe({channels: ['ch2'], }); Step 6: Graph Your Incoming Data with PubNub EON Now comes the flashiest and coolest part of our project: ! PubNub EON allows users to easily render in a real-time data graph with the drop of a script tag. EON By incorporating EON into our project, we’re going to get something that looks like this HTML Setup Since at this point you most likely have your HTML page opened up, let’s start implementing EON there first. To add PubNub EON to any HTML page, simply add this div tag in your body, which will inject the actual chart <div id="chart"></div> Then import the script tag SDK <script src=" "></script><link rel="stylesheet" href=" "/> https://pubnub.github.io/eon/v/eon/1.0.0/eon.js https://pubnub.github.io/eon/v/eon/1.0.0/eon.css Then subscribe to the eon-chart channel that you will be posting data to eon.chart({channels: ['eon-chart'],history: true,flow: true,pubnub: pubnub,generate: {bindto: '#chart',data: {labels: false}}}); And that’s it! It’s as simple as that! Now, let’s implement the last step, which is formatting the sensor’s publisher so EON knows how to graph the data. Python Setup This part is even easier. It’s just two lines! Go back to your Plant.py python code. Now, to publish correctly in python to the eon-chart API correctly, you need to create a dictionary of this type dictionary = {"eon": {"DATA NAME": DATA, "DATA 2 NAME": DATA 2 etc...}} So in our case, our dictionary would look like this dictionary = {"eon": {"Temperature": temperature, "Humidity": humidity}} Paste this in right above the line that publishes our sensor data to ch2. Now we need to publish this dictionary to a channel that our graph is going to read from. In our case, the eon-chart channel. pubnub.publish().channel("eon-chart").message(dictionary).async(publish_callback) And there you go! You have successfully created a self-sustaining system for preserving life FOREVER…..until you need to refill the reservoir. Originally published at www.pubnub.com .

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