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door_access_controllers [2019-09-22 22:10] – [PCB v3] timdoor_access_controllers [2023-04-08 10:24] (current) – [PCB ESP32 (draft)] 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://github.com/timhawes/onyx_robot/tree/or3+https://github.com/timhawes/onyx_robot/tree/or4
  
-  * Off-the-shelf DC-DC converter instead of custom circuit +  * Removed custom 12V-3.3V converter circuit 
-  * Split voltages 5V (for piezo and NFC module) and 3.3V for ESP8266 +  * Replaced with standard 12V-5V converter and 5V-3.3V LDO 
-  * Flyback diode on 12V switched output +  * I2C devices running on 5V instead of 3.3V 
-  * TVS diodes removed +  * 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 diodes 
 +  * 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 | 
 +| C2 | 0805 10uF 10V | 
 +| C3 | 0805 10uF 6.3V | 
 +| C4 | 0603 0.1uF 6.3V | 
 +| D1 | S1M+ | 
 +| 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/TR |
  
-PCBs have been ordered 22nd September 2019.+===== PCB ESP32 (draft) =====
  
-==== Future ====+This is draft design for migrating to ESP32.
  
-Future versions may use the Wemos D1 Mini to aid maintainabilityAlternatively, the next design may use the more powerful ESP32. +Goals: 
 +  * ESP32 series 
 +  * compatibility with existing wiring 
 +  * fit into the existing plastic enclosures 
 +  * nice to haves: 
 +    * fit existing enclosures better 
 +    * make wiring easier 
 + 
 +{{:20230407_doorman_esp32.pdf?direct&200|schematic}} 
 + 
 +{{:20230407_doorman_esp32.png?direct&200|}} \\ 
 +(placement and routing isn't finished) 
 + 
 +What's changed: 
 +  * PCB is biggerdesigned to screw into the enclosure as the manufacturer intended 
 +  * Uses the ESP32-S3-WROOM-1 module 
 +    * available with large flash/ram 
 +    * supports circuitpython 
 +    * supports native USB 
 +  * USB-C connector (plus optional UART pinout for low-level debugging) 
 +  * Pluggable 3.5mm terminal blocks for easier wiring (can be replaced with fixed blocks to reduce costs) 
 +  * MOSFET instead of relay (smaller, cheaper, probably more reliable) 
 +  * Dropped the PN532 reset pin in favour of a switchable power output (one less wire to manage) 
 +  * Reader connector has spare pins for existing LED and buzzer, but future readers can be I2C only for even less wiring 
 +  * Onboard RGB LED (will use with a light-pipe to eliminate the wiring for the current LED) 
 +  * Onboard buzzer 
 +  * Exit/Snib/Door inputs replaced with 4 general purpose I/O 
 +  * One I/O also has a power pin (e.g. to run the touch door handle) 
 +  * Optional Stemma QT (I2C) connector
  
 ===== Controller Unit ===== ===== Controller Unit =====
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   * [[http://cpc.farnell.com/kingbright/rtf5010/led-clip-prominent-5mm-pk25/dp/SC08862|5mm LED bezel]]   * [[http://cpc.farnell.com/kingbright/rtf5010/led-clip-prominent-5mm-pk25/dp/SC08862|5mm LED bezel]]
   * [[http://cpc.farnell.com/unbranded/r13-502ma-05-b/switch-black-push-button-spst/dp/SW03314|push-button switch]]   * [[http://cpc.farnell.com/unbranded/r13-502ma-05-b/switch-black-push-button-spst/dp/SW03314|push-button switch]]
-  * Laser-cut mounting plate: {{:nfc-controller-mount-20150925.dwg|DWG}} {{:nfc-controller-mount-20150925.dxf|DXF}}+  * Laser-cut mounting plate: {{:nfc-controller-mount-20200730.dxf|DXF}}
  
 {{:nfc-controller-20151031-231947.jpg?200|}} {{:nfc-controller-20151031-231947.jpg?200|}}
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 ===== Reader Unit ===== ===== Reader Unit =====
 +
 +==== Version 1 ====
  
 CAD files: {{:nfc-reader-20160626.dwg|DWG}} {{:nfc-reader-20160626.dxf|DXF}} CAD files: {{:nfc-reader-20160626.dwg|DWG}} {{:nfc-reader-20160626.dxf|DXF}}
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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://uk.farnell.com/multicomp/mcabt-456-rc/audio-element-piezo-9-5khz-12mm/dp/2433032|12mm piezo disc]]   * [[http://uk.farnell.com/multicomp/mcabt-456-rc/audio-element-piezo-9-5khz-12mm/dp/2433032|12mm piezo disc]]
   * [[http://www.elechouse.com/elechouse/index.php?main_page=product_info&cPath=90_93&products_id=2242|PN532 module]]   * [[http://www.elechouse.com/elechouse/index.php?main_page=product_info&cPath=90_93&products_id=2242|PN532 module]]
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 Cable colours in Hacklab installations: Cable colours in Hacklab installations:
  
-^ Pin ^ G1/G2/G8 ^ G11 (and photos) ^ +^ Pin ^ G1/G2/G8 ^ G11 (and photos) ^ Alarm Wire 
-| GND | blue | blue | +| GND | blue | blue | black 
-| VCC | green | orange | +| VCC | green | orange | red 
-| RST | brown | brown +| SDA | orange | green | yellow 
-| SDA | orange | green | +| SCL | white-green | white-green | blue | 
-| SCL | white-green | white-green | +| RST | brown | brown | green | 
-| LED +ve | white-brown | white-brown | +| LED +ve | white-brown | white-brown | orange 
-| Piezo | white-blue | white-blue |+| Piezo | white-blue | white-blue | white |
  
 The LED should be connected between LED and GND, with a 120R series resistor. To avoid damaging the LED, use hot-melt glue to secure it in place (not cyanoacrylate). The LED should be connected between LED and GND, with a 120R series resistor. To avoid damaging the LED, use hot-melt glue to secure it in place (not cyanoacrylate).
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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 ====
 +
 +The goal of this version is to make the assembly process easier and more reliable.
 +
 +It consists of a laser-cut acrylic plate that fits over a standard 1-gang UK electrical box. A PCB is glued to the inside of the plate, and this PCB integrates the PN532 module, buzzer, LED and wiring connections.
 +
 +CAD files: {{:back-box-1g-20190703.dxf|DXF}}\\
 +PCB files: https://github.com/timhawes/onyx_reader
  
 ===== Software ===== ===== Software =====
 +
 +[[https://github.com/timhawes/doorman-firmware|Firmware]] - Arduino C++ built with PlatformIO \\
 +[[https://github.com/timhawes/doorman-backend|Backend]] - Python 3 asyncio
  
 Features: Features:
door_access_controllers.1569190258.txt.gz · Last modified: 2019-09-22 22:10 by tim

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