The Color Kit Grande is the latest update of the hardware kits which I started selling back in 2015. It started with the ESP8266 and a tiny B/W OLED display. A little later the ESP8266 Color Kit followed and added a bigger display with resistive touch screen to it. Buyers also had to do a bit of soldering to complete the kit.
perience of setting up an inexpensive room sensor network using an ESP32 and a couple of Xiaomi devices, with the help of the open source project OpenMQTTGateway.
I mostly use EasyEDA for PCB design: it is easy to use and ordering assembled PCBs from JLCPCB couldn t be easier (and cheaper) with any other EDA tool. But exporting your PCB design from EasyEDA as a 3D object is really faulty. Often we want ... Read More
If you are still looking for justifications to buy a 3D printer then this blog post is for you. Banggood recently sent me the Ender 3 V2 for review and wow, this is really a great printer! I had two other printers before but this ... Read More
Logic Analyzers can be quite useful to test and analyze hardware. In this short video I explain how to use the cheap LHT00SU1 logic analyzer together with PulseView on Mac OS X to test a new ESP32 development board. Here is the code used to ... Read More
Recently more and more ESP32 hardware is appearing with the WCH CH9102 Serial-To-USB chip. I assume lower costs and higher availability are the reason for this. Lower costs compared to FTDI chips, to the Silicon Labs CP2102 or CP2104. But when I recently started working ... Read More
How do you add new virtual devices/commands in Node-Red so that Alexa can control them? There are great Node-Red extensions but things get more complicated if Node-Red is running in a docker container. In this blog post I share my take-aways from setting this up. ... Read More
If you are lacking good documentation it can be very hard to get started with a new device. I just couldn t find a comprehensive example project for how to connect TTGO-LoRA32 V1.0 with the V3 version of the Things Network. So I hope this post ... Read More
The ESP32 platform offers a wide range of functionality almost out of the box. For instance you can turn a ESP32 with little effort into a Bluetooth Audio speaker. In this article I describing how I tapped into the digital data stream coming from a ... Read More
Do you know this problem: you want your dumb home appliances to let you know once they change a state. You want to know once the dish washer finishes the cleaning cycle or when your electric oven has reached the target temperature to put the ... Read More