Mailbag Jan 2024

First mail opening of 2024. And no - there is no cat in the mailbag - I was just having some fun when I created the thumbnail!
Contents:
00:00 - Introduction
00:32 - I'm changing preferred Microcontrollers
03:00 - Resistors, transistors etc
04:23 - Laser Diode Light Source and quick test
06:55 - Unexpected Volt meter (moving coil)
07:39 - Optical Fibre
08:36 - RF SAW Filters
09:37 - Gas Sensor
12:06 - The big one! Faulty LAb Gear
17:12 - Bye for now
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[@MakeOrRepair]

I've started the Photodyne repair mentioned and run into a brick wall - anyone able to copy the Photodyne EPROM 3 for me?