Sunburn Monitor is a UV monitor with sound-based indication. It calculates the max sun exposure before sunburn based on your skin type. The project was published over hackaday.io by [Quarterturn]. It's based around SI1132 light sensor from Silicon Labs. SI1132 is a UV index and...

It has been a while from the announcement of the new SoC ESP32 from Espressif. Recently, Espressif released the ESP-WROOM-32 module which is based on ESP32 SoC, the big brother of the well know ESP8266 WiFi module. ESP32 is a 2.4 GHz Wi-Fi and Bluetooth combo chip with dual CPU cores...

Michael Dunn has designed a circuit that is able to double the input voltage and breaks DC path. I once needed a voltage doubler circuit with no DC leakage path between input and output, and ended up devising this unusual 556- (dual 555 timer) based circuit with a "floating" voltage...

An optical micro-displacement sensor from Omron Electronic Components Europe is capable of resolving 10 microns – one tenth the diameter of a human hair or the thickness of a coat of paint. by Graham Prophet @ edn-europe.com The high resolution of the Z4D sensor suits...

mozzwald.com has designed an iphone battery charger /tester. I have seen technicians often replace batteries when they may not necessarily need to be or ignore the fact that they could be the cause of the issue at hand. To remedy this I designed a basic iPhone battery charging...

Moto Z Droid and Moto Z Force Droid are the new phones from Motorola. They run Android 6.0 on a Qualcomm Snapdragon 820 SoC with a lot of other features. Motorola brought modularity to Moto Z using the hackable “Moto Mods” backplate expansion system. Motorola’s Moto Mods attach to...

Daniel Grießhaber over hackaday.io created a project called ESPTool. It is a tool to test WiFi networks security and to demonstrate how easy it is to crack a WiFi password or jam a WiFi network. Daniel designed ESPTool for education and self-test purpose. The Device has SSD1306...

Alberto @ pighixxx.com has published the first pages of a series of SMD components guides. Total guide will consist of 20 pages. The definitive guide to SMD components! Cheat Sheets, Package Types, Conversions, Size Codes and more… SMDGuide - A gift for all electronic enthusiasts -...