#112

The Raspberry Pi (I'm using a Model 3B+) has no analog input pins at all. So how do you measure analog voltages then?

Simply connect a Microchip Analog-to-Digital-Converter (ADC) chip that uses SPI and you're in business. Just to make it really easy we can use a kit of parts from RasPiO, a UK-based company.

I have no connection with this company at all, and I didn't get the product for free or at a reduced rate.

I noticed whilst editing this video that the audio could vary as I turned from desk to soldering station; I'm already thinking of what I can do to improve this (without buying another expensive microphone). I might be able to use the built-in microphone from my video camera to augment the audio. We shall see how it works in future videos!

The sketch (OK, Python program) can be found in my Github
https://github.com/RalphBacon/Raspber...

Source of the Analog Zero kit
http://rasp.io/analogzero/

User guide for the Analog Zero kit (very useful)
http://rasp.io/wp-content/uploads/201...

Datasheet for the 10-bit Microchip 3008
http://ww1.microchip.com/downloads/en...

Datasheet for the 12-bit Microchip 3208
http://ww1.microchip.com/downloads/en...

VNC viewer for connecting your Windows PC to the Raspberry Pi
https://www.realvnc.com/en/connect/do...

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