Debug SONOFF AC relay with a thermal camera

James Lewis shares his experience in debugging SONOFF AC relay with a thermal camera: The clever solution seemed to be clever, at least for a few minutes. Suddenly the light turned off. I thought maybe there was a timeout for the manual button. Annoying, but workable. The lamp remained off for about another 2 minutes when […]

Video – JTAGulator: Assisted discovery of on-chip debug interfaces

Joe Grand presented on the JTAGulator at this weekend’s Derbycon conference in Louisville, KY. We previously posted about Joe’s JTAGulator, which is an open source tool which assists in identifying on-chip debugging (OCD) and/or programming connections from test points, vias, or component pads on a target piece of hardware. The JTAGulator is available from Parallax […]

Read the AK8975 magnetometer with a Bus Pirate

Reading the AK8975 magnetometer with the Bus Pirate: I managed to mess up the ATAVRSBIN1 I got from Atmel during a [quadracopter crash]. After the crash I noticed it didn’t respond any more so I hooked it to my Bus-Pirate… Get your own handy Bus Pirate for $30, including world-wide shipping. Also available from our […]