Difference between revisions of "Door control system/Logbook"
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See also http://github.com/londonhackspace/Doorbot/commits/master | See also http://github.com/londonhackspace/Doorbot/commits/master | ||
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| + | == 2010-09-29 == | ||
| + | |||
| + | Operator: Solexious | ||
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* [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. | : The board no longer flashes the outputs on boot, but still does when the reset button is pressed. | ||
| − | |||
Workaround: | Workaround: | ||
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* Use a solid state relay (no darlington required) | * Use a solid state relay (no darlington required) | ||
| + | <s> | ||
=== Problem 2 === | === Problem 2 === | ||
* Chocolate block "plug" is loose, sometimes causing loss of power at slightest touch | * Chocolate block "plug" is loose, sometimes causing loss of power at slightest touch | ||
| Line 41: | Line 45: | ||
To try: | To try: | ||
* Replace with header/plugs (we'll try a D-type on Tuesday) | * Replace with header/plugs (we'll try a D-type on Tuesday) | ||
| + | </s> | ||
| + | ''Fixed by Artag'' | ||
| + | <s> | ||
=== Problem 3 === | === Problem 3 === | ||
* Flashing arduino has stopped working (stk500v1: no response) | * Flashing arduino has stopped working (stk500v1: no response) | ||
| Line 47: | Line 54: | ||
To try: | To try: | ||
* Another arduinio (Solexious will bring one on Tuesday) | * Another arduinio (Solexious will bring one on Tuesday) | ||
| + | </s> | ||
| + | |||
| + | ''This was because doorbot had the serial port open! (thanks, Solexious)'' | ||
=== Problem 4 === | === Problem 4 === | ||
* Rootfs went away at 4:04am | * Rootfs went away at 4:04am | ||
| + | |||
| + | * This might have been the sensitive chocblock again. | ||
Revision as of 19:51, 29 September 2010
See also http://github.com/londonhackspace/Doorbot/commits/master
2010-09-29
Operator: Solexious
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)
Fixed by Artag
Problem 3
- Flashing arduino has stopped working (stk500v1: no response)
To try:
- Another arduinio (Solexious will bring one on Tuesday)
This was because doorbot had the serial port open! (thanks, Solexious)
Problem 4
- Rootfs went away at 4:04am
- This might have been the sensitive chocblock again.