Blynk, PlatformIO and ESP32

Blynk is an IoT-platform that consists of a Blynk server, custom projects within an iOS/Android mobile app and custom hardware IoT-nodes (Arduinos etc) using a Blynk library. The mobile app communicates with the hardware via the Blynk server and you can use the mobile interface for displaying sensor data from the hardware nodes or control […]

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Using CH340 devices with OSX

I have several low-cost development boards that use the CH340/CH341 usb-to-serial chip for usb communication. Unfortunately, with OSX Sierra, the official CH340 driver cause a Kernel Panic (freeze + reboot) of the Mac when a device is connected. The reason is that the drivers are not signed correctly. I’ve found an alternative driver ($8) that […]

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Processing and Arduino

Processing is an open-source IDE with a Java-based programming language that is aimed at lowering the learning threshold for interactive graphics creation. It can be used for teaching programming, making prototypes, creating art experiments or just generating crazy visual stuff in general. The community is very active and there are tons of useful contributed libraries. Wiring […]

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Exploring Adafruit IO

Adafruit hosts a cloud service, io.adafruit.com, where you can upload data from your devices and also subscribe to data from other devices. The service is currently in beta, but you can sign up for a free account to test it. The data is stored in “feeds” and you can configure your own dashboards for viewing […]

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Meet the Huzzah!

ESP8266 is a very popular and inexpensive WiFi-chip that can be a real contributor for taking small gadgets to the Internet. I recently bought an Adafruit Feather Huzzah ($18). It is build around ESP8266 which means WiFi-connectivity, but has some additional features compared to the simpler ESP8266 modules available: A USB-port for serial transfer and programming […]

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