A gallery of pictures of the retrofit of an old Lael Tester from 1955.
You can red more about Lael retrofit here.
- Lael tester voltmeter, vintage
- Detail of the needle gauge
- How it appears opened
- Removig old parts
- Disassembling of the needle gauge
- The needle!
- It's quite a mess
- It's quite a mess, but with some label
- The rorary switches and the old potentiometer
- Detail of the old rotary switch with new connections
- The ESP8266 connected with Arduino Nano
- The project
