![]() When the pandemic sent more teams home and away from their office setups, usage of Parsec took off. After noticing a number of users across the creative industry tapping Parsec to beam into their workstations, the company started rolling out plans and features just for creative teams. It turns out the same things that made it good for game players - low latency, high-resolution display support and compatibility with all kinds of different input devices - made it good for game makers as well. The thing that bothers me the most is that the delay issue doesn't seem to be a resource bottleneck, so I'm really having a hard time figuring out where to go with this next. Parsec began its life back in 2016, initially focused on helping gamers stream games from their powerful PCs to other (generally less powerful) devices. The Raspberry Pi 4 isn't supported at all for Parsec, there's a note about this at the top of the Raspberry Pi Parsec Setup article. It’ll stream your work-in-progress artwork without screwing up the colors, and it’ll play friendly with fancier input devices like pressure-sensitive drawing tablets. Tuned for creatives, it works fine even if your rig has multiple high-resolution displays. Parsec’s pitch has long been remote desktop access without compromise. Unity says it will acquire Parsec, a remote desktop tool for developers and creatives, for $320 million in cash. The code is also available in the repository.Unity, the company behind the super popular 2D/3D engine of the same name, is today announcing plans to make its biggest acquisition to date. Our next tutorial will cover how to write an Android App that works with the code described here. Here is the link for our GitHub repository. If you prefer, you may write separated codes for each task and run both simultaneously with pm2. We provide a working code for this tutorial. Please refer to the pm2 package, already mentioned in our Setting up Raspberry Pi tutorial. ![]() To have a real IoT device, these node processes need to run automatically when the device boots. To test this process, connect and later disconnect the pin on Raspberry that supplies 3.3 V to the pin defined as input. To turn on the power LED for the rest of the application, just add the following code. Please note that Raspberry Pi 2B outputs 3.3 V! The integer argument on the constructor in the code above corresponds to the GPIO specific numbering! The second argument just sets it as an output pin. For example, pin number 7 is GPIO4 and pin number 11 is GPIO17. There is a physical numbering corresponding to the numbers inside the circles and a GPIO specific numbering. Please note our Raspberry Pi has the following the pin diagram, extracted from here. output1 is the LED that will be turned on/off as a response to Live Query. LedPower is a LED that will always be on to indicate the application is running. var Parse = require('parse/node') var onoff = require('onoff') var Gpio = onoff.Gpio var ledPower = new Gpio(4, 'out'), output1 = new Gpio(17, 'out') Import Gpio class to initialize each pin. Make sure you have installed it using npm. The real-world response is an interaction with the pins on Raspberry using the onoff package. We will use Live Query functionality, made easy in our Back4App dashboard, to listen to real-time events. Section 1: Responding to Real-Time events on Parse Server However, you may choose to develop it independently and interact directly with Parse Dashboard to create/inspect objects. This code was designed to interact with the Android App described in this series of tutorials. You may follow step 1 on the following tutorial if you have not enabled Live Query. You will also need to enable Live Query on your app. Follow Step 3 on the following tutorial if you still do not have. ![]() We strongly recommend you to follow our tutorial on Raspberry Pi, in the following link: You have to set up a Raspberry Pi environment. Three LEDs, three resistors (1k works fine), a breadboard and jumpers are sufficient. ![]() Of course, you need some electronic components. We also provide our codes as a first step for you to develop your desired IoT Apps. Here you will learn how to connect your Raspberry Pi to Parse Server using Back4App and to perform actions such as Queries, Live Queries and writing objects, and how the events on Parse Server may trigger real-world events! In this part, we will take a step towards a real IoT application, by opening a connection between Raspberry Pi and Parse Server and letting events on each side trigger actions on the other. In our previous tutorial on IoT, we explained how to setup your Raspberry Pi and to write values to the GPIO pins.
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