Raju R Baddi @ edn.com has published a circuit that enable you to test electrolytic capacitors and decide if worth using it on a circuit. The values in the figure are typical for general testing of all capacitors, from 1-nF ceramic versions to 1000-μF electrolytic types. The value...

Martin @ harizanov.com has published an article on how to forward traffic from RFM69 to MQTT using  ESP8266: I’ve mentioned my plans for this project during the IoT hangout session few months ago, it has finally materialized as working prototype. The blocker so far was the lack...

Michael @ acidbourbon.wordpress.com has built the “perfect” tea timer project. He wrote a post on his blog detailing its assembly: Maybe you just drink coffee. Then this article is not particularly interesting for you. But if you like a cup of black or green tea once in a while...

Z-wave Alliance contest winner and Texas-based HAB Home Intelligence has launched a crowdfunding campaign on Kickstarter.com to bring iBlinds, a DIY home automation kit, to the market.  The product will allow customers to make their existing window blinds “smart” and to control...

PULPino is an open-source microcontroller system, based on a small 32-bit RISC-V core developed at ETH Zurich. The core has an IPC close to 1, full support for the base integer instruction set (RV32I), compressed instructions (RV32C) and partial support for the multiplication...

conoroneill.net has coded an Espruino Pico to work like a HID device. Now that the Espruino Pico has (beta) HID support, it can pretend to be a keyboard or mouse (or other HID compatible device). This makes it possible to send characters to the active window on your...

davedarko created this Adafruit Trinket Pro shield for the HP QDSP-6064 bubble display. The design files and source code are hosted on GitHub. An additional temperature sensor in the form of the LM75 can be added to this bubble display shield. The atmega32p is capable of driving up...

Jhon_Control @ instructables.com has written a tutorial on how to monitor temperature using the ESP8266 and DS18B20 and display the data on Emoncms platform.  Emoncms is an open source web application that enable you to monitor and visualize different environmental data. ESP8266 +...