Difference between revisions of "Door control system/Logbook"
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=== Problem 1 === | === Problem 1 === | ||
− | Identified by | + | Identified by Solexious at the weekend |
* <s>Arduino resets on serial open() from bifferboard</s> | * <s>Arduino resets on serial open() from bifferboard</s> | ||
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* Physical reset button on arduino (it also makes the pins flash) | * Physical reset button on arduino (it also makes the pins flash) | ||
* [http://www.arduino.cc/playground/Main/DisablingAutoResetOnSerialConnection 120 ohm resistor] between 5V and RSET on arduino - works :D | * [http://www.arduino.cc/playground/Main/DisablingAutoResetOnSerialConnection 120 ohm resistor] between 5V and RSET on arduino - works :D | ||
− | + | : The board no longer flashes the outputs on boot, but still does when the reset button is pressed. | |
− | |||
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Revision as of 09:34, 28 September 2010
See also http://github.com/londonhackspace/Doorbot/commits/master
2010-09-27
Operator: Mark
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 (this seems to be getting worse over time)
Tried:
- Disabling DTS (didn't work)
- Pull-down resistor (10k to 1k)
- Physical reset button on arduino (it also makes the pins flash)
- 120 ohm resistor between 5V and RSET on arduino - works :D
- The board no longer flashes the outputs on boot, but still does when the reset button is pressed.
Workaround:
- Open serial port on boot
- Hope it doesn't restart
To try:
- Replace diode on solenoid
- Resistors to reduce sensitivity of darlington
- Use a capacitor to smooth over the reset pulse, requiring > 1 second to trigger relay
- Rebuild darlington/relay board
- Use a solid state relay (no darlington required)
Problem 2
- Chocolate block "plug" is loose, sometimes causing loss of power at slightest touch
To try:
- Replace with header/plugs (we'll try a D-type on Tuesday)
Problem 3
- Flashing arduino has stopped working (stk500v1: no response)
To try:
- Another arduinio (Solexious will bring one on Tuesday)
Problem 4
- Rootfs went away at 4:04am