Here is a picture of the new prototype board mounted in my tool shed. The nRF24LE1 module is the same but I have moved it from the nRFgo motherboard to a prototyping board. I have also added a LM317 voltage regulator and an RS232 driver.
nRF24LE1 module
I have also made up my mind to order the Pentametric Battery Monitor from Bogart Engineering and use it for current measurement instead of the circuit described below. The Pentametric has a computer interface that can be used to read out all data captured. This means I also need a micro controller with more than one serial port. More on that later.
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