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nyan:boxes [2024/09/01 17:14] 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.
  
-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]].+===== 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. 
 + 
 +==== 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-.
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 470uF added to pi 5V header, and also to Heltec Vext pin. 470uF added to pi 5V header, and also to Heltec Vext pin.
  
 +==== Wiring ====
 +
 +<code>
 +3 pin cable:
 +orange GPIO6 UART_TX
 +yellow GPIO7 UART_RX
 +Purple GPIO15 Lightning IRQ
 +
 +Single Blue: Reset
 +
 +4 pin cable:
 +Green GPIO48 SDA
 +Blue  GPIO47 SCL
 +Purple   GND
 +White   3V3
 +
 +Single Black: JTAG select (GPIO3) 
 +</code>
  
 ===== 1 ===== ===== 1 =====
nyan/boxes.1725210842.txt.gz · Last modified: by river

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