EEssential

My Bluetooth mouse runs on two AA cells.  As the each battery drops below 1.2V, the mouse complains about low battery.  The alkaline battery...

We will replace the 8MHz crystal with a 16MHz one on  LCR-T4 transistor tester .  ATMega328p can run up to 20MHz.  The old firmware still se...

We'll interface Garmin LIDAR Lite with esp32-pico-kit .  esp32-pico-kit interfaces the LIDAR using I2C.   We'll make use of the wire...

How does a multimeter measure resistance?  A lot of online answers suggest that a constant current stimulus is used.  I looked into it and f...

The GPS antenna ($20) has 4-conductor 3.5mm plug that goes into the Aukey Dash Cam for location information to be included in the recorded v...

I ordered a 0.96" I2C 128X64 Blue OLED Display Module from eBay for $2.85 (shipping included).   It claims: voltage 3-5V,  power consum...

I ended up with a   transistor tester lcr t4  with a damaged LCD display.  We'll try to replace the display with a 1.8" 128x1...