Door control system/Logbook

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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