October 2022

Alex

Wifi Mains Switch, a simple wifi-enabled AC power point using an ESP32 and a triac with an optocoupler.

https://thehardcoder.weebly.com/wifi-mains-switch.html

Martin.

Washing machine lid repair.

Steve.

Using a Dremel & router table to do cut-outs in project enclosures.

Round holes are easy and best done with a step drill when drilling panels, but a rectangular cutout is much harder.

A router table is set up with stops in all 4 directions so a 'window' shape can be cut out of the panel.

Wayne.

A pi pico with a microphone and color LED ring. The LEDs respond to the audio signal with amplitude & frequency.

Also a Scoppy DSO that connects to the pi pico and uses a smart phone for a display.