07-04-2016, 00:48
Yes. It occurred when I was updating to the new software. I had unplugged the Nano several times and at one time had inserted the Nano incorrectly and powered it up(one pin offset). The 7809 got very hot but seems to have survived as it still produces 8.96V on a multimeter. I have changed the 433MHz TX to two new ones and also tried a new Nano but still does not transmit. All my solder joints look OK. It must be something very basic.