door_access_controllers
Differences
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Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision | ||
door_access_controllers [2019-02-24 00:35] – tim | door_access_controllers [2019-04-29 17:50] – tim | ||
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Errata: a generic through-hole flyback diode should be fitted between GND and 12V_OUT, on the underside of the screw terminal. | Errata: a generic through-hole flyback diode should be fitted between GND and 12V_OUT, on the underside of the screw terminal. | ||
+ | ==== Lessons Learned ==== | ||
+ | |||
+ | Future PCB revisions are likely to be based on a Wemos D1 Mini module to reduce component count and allow easier debugging. The onboard DC-DC converter will be replaced with an off-the-shelf "LDO replacement" | ||
===== Controller Unit ===== | ===== Controller Unit ===== | ||
Line 79: | Line 82: | ||
* [[http:// | * [[http:// | ||
* [[http:// | * [[http:// | ||
- | * Cat 5 or other cable with at least 7 cores | + | * Alarm cable with at least 7 cores (Cat5 can be used but is not recommended) |
The reader enclosure is formed from three layers of 3mm black acrylic. The layers should be joined with cyanoacrylate adhesive. | The reader enclosure is formed from three layers of 3mm black acrylic. The layers should be joined with cyanoacrylate adhesive. | ||
Line 87: | Line 90: | ||
Bend and cut the LED leads to the correct shape and length. Solder the LED and cable before gluing the module into the enclosure. | Bend and cut the LED leads to the correct shape and length. Solder the LED and cable before gluing the module into the enclosure. | ||
- | Cat 5 cable colours: | + | Cable colours |
- | + | ||
- | | blue | GND | | + | |
- | | green | VCC | | + | |
- | | brown | RST | | + | |
- | | orange | SDA | | + | |
- | | white-green | SCL | | + | |
- | | white-brown | LED +ve | | + | |
- | | white-blue | Piezo | | + | |
- | | white-orange | not used | | + | |
- | Note that on the G11 door and **in the photos**, orange=VCC and green=SDA. | + | ^ Pin ^ G1/G2/G8 ^ G11 (and photos) ^ |
+ | | GND | blue | blue | | ||
+ | | VCC | green | orange | | ||
+ | | RST | brown | brown | | ||
+ | | SDA | orange | green | | ||
+ | | SCL | white-green | white-green | | ||
+ | | LED +ve | white-brown | white-brown | | ||
+ | | Piezo | white-blue | white-blue | | ||
- | The LED should be connected between | + | The LED should be connected between |
- | The piezo should be connected between | + | The piezo should be connected between |
Test the reader and controller together before securing the reader to the wall with double-sided adhesive foam tape. | Test the reader and controller together before securing the reader to the wall with double-sided adhesive foam tape. |
door_access_controllers.txt · Last modified: 2023-04-08 10:24 by tim