door_access_controllers
Differences
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door_access_controllers [2019-09-22 22:10] – [PCB v3] tim | door_access_controllers [2020-08-13 17:37] – 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. | ||
- | ==== PCB v3 ==== | + | ==== PCB v4 ==== |
- | https:// | + | https:// |
- | * Off-the-shelf DC-DC converter | + | * Removed custom 12V-3.3V converter circuit |
- | * Split voltages | + | * Replaced with standard 12V-5V converter |
- | * Flyback diode on 12V switched | + | * I2C devices running |
- | * TVS diodes | + | * Removed LED series resistor (appropriate resistors must be used at installation time) |
- | * Normally-closed relay option removed | + | * Replace relay diode with M7 |
- | * Pull-up removed from piezo | + | * Added flyback diode to 12V relay output |
+ | * Removed ESD protection | ||
+ | * Removed 3.3V connection from FTDI connector | ||
+ | * Solder jumpers for no-volt relay output | ||
- | This is a minor revision and is not likely to be rolled-out except where a new door is required. | + | ^ Reference ^ Component ^ |
- | + | | C1 | 0805 10uF 25V | | |
- | PCBs have been ordered 22nd September 2019. | + | | C2 | 0805 10uF 10V | |
- | + | | C3 | 0805 10uF 6.3V | | |
- | ==== Future ==== | + | | C4 | 0603 0.1uF 6.3V | |
- | + | | D1 | S1M+ | | |
- | Future versions may use the Wemos D1 Mini to aid maintainability. Alternatively, | + | | D2 | S1M+ | |
+ | | JP1 | PCB male header 2.54mm pitch 3-way | | ||
+ | | JP2 | PCB male header 2.54mm pitch 2-way | | ||
+ | | P1, P2, P3 | PCB screw terminals 5.08mm pitch 2-way (9 total) | | ||
+ | | P4 | PCB male header 2.54mm pitch 6-way | | ||
+ | | Q1, Q2 | MOSFET-N SOT-23 (e.g. On Semi FDV303N) | | ||
+ | | R6 | 0603 10K | | ||
+ | | R7 | 0603 31K6 | | ||
+ | | R8 | 0603 2K2 | | ||
+ | | R9 | 0603 10K | | ||
+ | | R10 | 0603 10K | | ||
+ | | R11 | 0603 10K | | ||
+ | | R12 | 0603 4K7 | | ||
+ | | R13 | 0603 4K7 | | ||
+ | | R14 | 0603 10K | | ||
+ | | SW1 | EVQPT5 tactile switch | | ||
+ | | U1 | Recom R-78E5.0-1.0 | | ||
+ | | U2 | Songle SRD-12VDC-SL-C | | ||
+ | | U3 | ESP-12E or ESP-12F | | ||
+ | | U4 | SPX3819M5-L-3-3/ | ||
===== Controller Unit ===== | ===== Controller Unit ===== | ||
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* [[http:// | * [[http:// | ||
* [[http:// | * [[http:// | ||
- | * Laser-cut mounting plate: {{: | + | * Laser-cut mounting plate: {{: |
{{: | {{: | ||
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===== Reader Unit ===== | ===== Reader Unit ===== | ||
+ | |||
+ | ==== Version 1 ==== | ||
CAD files: {{: | CAD files: {{: | ||
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* 3mm blue LED | * 3mm blue LED | ||
- | * 120R resistor (this is low, but an additional resistor is used on the controller PCB) | + | * 120R resistor (or higher) |
* [[http:// | * [[http:// | ||
* [[http:// | * [[http:// | ||
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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. | ||
+ | |||
+ | ==== Version 2 ==== | ||
+ | |||
+ | In progress. | ||
===== Software ===== | ===== Software ===== |
door_access_controllers.txt · Last modified: 2023-04-08 10:24 by tim