Door control system/Logbook

2010-09-27

Problem 1 (identified by solexious at the weekend)

• Arduino resets on serial open() from bifferboard
• Arduino flashes digital outputs high on reset
• Digital output flashing high triggers door open

Tried:

• Disabling DTS (didn't work)

Workaround:

• Open serial port on boot
• Hope it doesn't restart

To try:

• Physical reset button on arduino (see if it flashes digital pins)
• 120 ohm resistor between 5V and RSET on arduino
• Replace diode on solenoid
• Use a capacitor to smooth over the reset pulse, requiring > 1 second to trigger relay
• Rebuild transistor/relay board
• Use a solid state relay (no transistor required)

Problem 2:

• Chocolate block "plug" is loose, sometimes causing loss of power at slightest touch

To try:

• Replace with header/plugs

Problem 3:

• Flashing arduino has stopped working (stk500v1: no response)

To try:

• Another arduinio

Problem 4:

• Rootfs went away at 4:04am