jappelino

When mounting the sister board I put the required 10 uF capacitor on the 3.3 volts. This caused big problems, the CPU turns off the relay by a port connected to the base of a BC547. When turned off the capacitor slowly reduces the voltage. It seems like at some point the Zigbee unit is releasing it's load and the voltage rices enough for the CPU to restart and enable the driving of the relay. To avoid this I have settled for a real retro style with an enormous switch, the CPU will use the onboard LED to blink in the end making it a multimedia show and also force you to turn the thing off. The original board is working ok without the capacitor, but I am thinking about a one shot solution instead of CPU contolled turn off.