Well my 2nd attempt at soldering the Pro Mini came out much much better.
I was actually far too happy about it as each pin seemed to solder perfectly (ish) each time.
I think it's a combination of better solder and a better technique.
And here's my prototype wireless temperature sensor. Data is transmitted to an RPi over Bluetooth.
Waiting for some solar panels to arrive so I can put it outside and have the batteries recharge. They currently last about 48 hours. Also waiting for some alternative RF transceivers so I can increase the range since Bluetooth is a bit naff.
I think I'm going to buy an atmega chip and other bits to make my own so I can reduce the power consumption since I certainly don't need a power LED, don't need the regulators either since I'm using the 4xAA batteries as a regulated "5V". Currently uses around 40mA on average.
EDITED: 28 May 2014 00:51 by ANT_THOMAS