For easy experimenting added resistors and a Dupont connector to a 'normal through hole' RGB led. Transparent heat shrink was added ...

iTag Bluetooth iTags advertisements say you can use this cheap devices to find your keys, wallet and other items. I ordered 5 of this ...

To get more experience with SMD soldering i build this led chaser. The circuit of this running light consists of a 555 timer to make pulses...

I wanted to connect an RFID reader to my home network. Therefore i used a ESP8266, more specific the Wemos D1 mini Wifi module. Test 1 (f...

Due to some other activities it has been a while ago that i made my last post. This post is an introduction to the software for the Voice Co...

An interesting input device is the ElecHouse Voice Recognition Module V3. It comes with a microphone and some pins to solder on the PCB. I o...

Several YouTube  video review channels do sometimes a product teardown. When i ordered two of this Aliexpress i had no plans to do a teardo...

The Microwave Radar Sensor RCWL-0516 is an interesting cheap motion sensor. At Aliexpress i found 5 pieces for  € 2,19 => € 0,44 / pi...