I've now gone into the symbol for the RF12B and added a couple of mm to the package outline and improved the PCB layout by rotating R3 90 degrees to clear the RF12B PCB. Ready for the next batch, if I ever need any more!
I programmed a blink sketch into an '84 and plugged into a PCB, added an LED between PB0 and
I've also ordered some 2xAAA battery holders with switches from ebay so I can easily power the boards.
If all goes well I will even have a go at logging data to an SD card, another ebay purchase.