PART 7: http://www.youtube.com/watch?v=s8b4h_UybLE
After some Arduino hurdles, Dave troubleshoots his DAC SPI driver code in “real time”, and takes a peek at an issue with the LCD I2C bus. As well as showing off his PSU PCB for the first time.
The PCB is from Circuit Labs in New Zealand:
What’s inside the Masterlock 4400 Bluetooth Padlock? Dave tests and investigates a particular magnetic attack ...