EEssential

Atomic Pi  can be a great platform to try other OSes, such as DOS, ReactOS, Minix.  Here we start with the oldest PC OS, DOS.  We will insta...

At some point, there is bound to be a version of Pi with an Intel processor.  Atomic Pi is here for a similar price of $35.   It comes with ...

I have an old AC power adapter that outputs 5V and 12V at 1A each with combined total output of 15W.  It stopped working.  I opened up and f...

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...