I bought a PICAXE 20M for a new project, and I'm trying to download code to it over the serial port of my computer. I set up the circuit with the 22k and 10k resistors and tried to download, but I got a 'memory validation failed' error. In the options dialog, I can get the Firmware version with no problem. After looking at the PICAXE forum, I did the following:
- Checked the voltage going into the PICAXE - at first it was reading slightly over 5V, but I added a 7805 and it now reads about 4.8V.
- I tried doing the hard reset.