Monday, 2 May 2016

breaking out a slice of radio on a raspberry pi cobbler

Using a slice of radio RF transmitter will take over the GPIO pins on your raspberry pi.
Sometimes you want your leftover GPIO pins back so you can use them for other things. (e.g. a DHT22 temperature sensor in this picture below)

A slice of radio only needs Tx, Rx, 3+ and GND.
You can cobble your slice of radio on a 26 pin cobbler and then put this on a breadboard.

I had the unfortunate surprise that the breadboard for my 40 pin cobbler and the 28 pin cobbler are slightly different dot alignment for the power and ground rails. So I had to daisy chain them together with one on top of the other    

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