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nyan:boxes [2025/02/12 03:10] rivernyan:boxes [2025/05/13 08:23] (current) river
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 Notes on Nyan prototype / development boxes I have built. Notes on Nyan prototype / development boxes I have built.
 +
 +===== Connectors =====
  
 The NMEA 2000 connector wires have the wrong colours. I have used the correct colours of ferrules to mark them, according to the colours tabulated in [[:nmea2000|NMEA 2000]], except that shield is marked green. The NMEA 2000 connector wires have the wrong colours. I have used the correct colours of ferrules to mark them, according to the colours tabulated in [[:nmea2000|NMEA 2000]], except that shield is marked green.
 +
 +==== Custom ====
 +
 +=== Waterproof blue connectors with 9 pins. ===
 +
 +| 1 | +12V nom. (NMEA2000 bus power), OR USB VBus (5V). |
 +| 2 | Ground |
 +| 3 | USB D+ |
 +| 4 | USB D- |
 +| 5 | CAN+ |
 +| 6 | CAN- |
 +| 7 | SWDIO |
 +| 8 | SWDCLK |
 +| 9 | Boot or Reset |
 +
 +=== Pico Internal Wiring to Connector ===
 +
 +| Red     | USB VBus |
 +| Black   | Ground |
 +| Yellow  | USB D+ |
 +| Blue    | USB D- |
 +| Grey    | Boot   
 +| Green   | SWDCLK |
 +| White   | SWDIO  |
 +
 +=== Debug Cable ===
 +
 +9 pin blue waterproof connector for flash / debug of boxes. Pinout as above.
 +
 +Cable end has:
 +  * USB plug
 +  * 3 pin dupont socket as pico debug: orange: SWDCLK, black: ground, yellow: SWDIO. 
 +  * Brown dupont: pin 9, BOOT.
  
 ===== 0 ===== ===== 0 =====
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   * Pi 5. Has official fan heatsink.   * Pi 5. Has official fan heatsink.
-  * Heltec WSL V3+  * <del>Heltec WSL V3</del> Replaced with Heltec V3. Connector broke on the WSL.
   * INA3221. CH1: 50mR, power input. CH2: 5V converter output, voltage only.   * INA3221. CH1: 50mR, power input. CH2: 5V converter output, voltage only.
   * Lightning sensor   * Lightning sensor
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   * PoE splitter   * PoE splitter
  
-Pi is connected as a JTAG debug probe to the Heltec.+<del>Pi is connected as a JTAG debug probe to the Heltec.</del>
  
 RS422 UART board screw terminals are connected externally. Additionally, the signals and ground are connected with soldered wires to the USB RS422 interface. The colours are misleading: green is A+, red ground, black B-. RS422 UART board screw terminals are connected externally. Additionally, the signals and ground are connected with soldered wires to the USB RS422 interface. The colours are misleading: green is A+, red ground, black B-.
nyan/boxes.1739329823.txt.gz · Last modified: by river

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