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I've been taking scope pictures with my phone, but sometimes the pictures do not have good focus and the picture size is large.    The T...

This is a 7-port USB hub with 4 USB3 ports and 3 USB2 ports by Zoweetek, ZW-H355.  It essentially is consisted of two ICs, GL3523 by Genesys...

I came across a RaspberryPi Zero W, the older generation RPi Zero with WiFi.  For $10, it is a great little board.  Although it can run the ...

I recently had to replace a starter motor, so I got a chance to look the interior of the starter motor assembly.    The starter motor assemb...

The check engine light came on and the code from the ODB port is P0128, which usually means the thermostat stuck open.  This is corroborated...

I wrote about the  AN8008 multimeter .  I have been generally happy with the meter.  But more recently, I started to notice some problems: t...

I wrote about  Atomic Pi  about two years ago.  Recently, I started using it again as a desktop computer.  I like it for the quietness witho...