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This document describes the connector series and pinouts Dronecode has standardized. The long-term goal is to offer several tiers of connectors:
These types are recommended:
The Dronecode Mini (DCM) connector standard is intended for in-vehicle, cross-PCB use. It uses the JST GH series which offers a latch lock mechanism at small size and a very competitive cost ($0.15 / 6 pos connector footprint in quantities).
This pinout should be used for any serial port. Ports not supporting hardware flow control should leave the CTS and RTS lines floating. Cables should be 1:1 to the periphal and TX / RX should be crossed on the peripheral side (e.g. a radio modem would have its RX port on pin 2 and TX port on pin 3).
Pin | Signal | Volt |
---|---|---|
1 (red) | VCC | +5V |
2 (blk) | TX (OUT) | +3.3V |
3 (blk) | RX (IN) | +3.3V |
4 (blk) | CTS (IN) | +3.3V |
5 (blk) | RTS (OUT) | +3.3V |
6 (blk) | GND | GND |
This port is intended for combined serial plus I2C GPS units.
Pin | Signal | Volt |
---|---|---|
1 (red) | VCC | +5V |
2 (blk) | TX (OUT) | +3.3V |
3 (blk) | RX (IN) | +3.3V |
4 (blk) | I2C1 SCL | +3.3V |
5 (blk) | I2C1 SDA | +3.3V |
6 (blk) | GND | GND |
Recommended CAN transceivers: TJA1051TK3/118
or LTC2875
Pin | Signal | Volt |
---|---|---|
1 (red) | VCC | +5V |
2 (blk) | CAN_H | +5V |
3 (blk) | CAN_L | +5V |
4 (blk) | GND | GND |
Pin | Signal | Volt |
---|---|---|
1 (red) | VCC | +5V |
2 (blk) | I2C1 SCL | +3.3V (1.5K pullup on autopilot) |
3 (blk) | I2C1 SDA | +3.3V (1.5K pullup on autopilot) |
4 (blk) | GND | GND |
This port is optional and for external SPI sensors.
Pin | Signal | Volt |
---|---|---|
1 (red) | VCC | +5V |
2 (blk) | SPI_EXT_SCK | +3.3 |
3 (blk) | SPI_EXT_MISO | +3.3 |
4 (blk) | SPI_EXT_MOSI | +3.3 |
5 (blk) | !SPI_SS1 | +3.3 |
6 (blk) | !SPI_SS2 | +3.3 |
7 (blk) | GND | GND |
The CURRENT signal should carry an analog voltage from 0-3.3V for 0-60A as default. For high-power units the range should be 0-3.3V for 0-120A. The VOLTAGE signal should carry an analog voltage from 0-3.3V for 0-50A as default.
The VCC lines have to offer at least 2.5A continuous and should default to 5.3V. A lower voltage of 5V is still acceptable, but discouraged.
Pin | Signal | Volt |
---|---|---|
1 (red) | VCC | +5.3V |
2 (blk) | VCC | +5.3V |
3 (blk) | CURRENT | +3.3V |
4 (blk) | VOLTAGE | +3.3V |
5 (blk) | GND | GND |
6 (blk) | GND | GND |
To facilitate debug and service cables, Dronecode has developed several debug connectors, of which the Dronecode mini debug connector has entered active service.
NOTE: THIS IS NOT THE SAME CONNECTOR SERIES AS FOR THE REGULAR PORTS
Dronecode debug port (JST SM06B connector). The indicated voltage is nominal 3.3V, but for a target running at a lower voltage (e.g. 1.8V) the debug probe should shift its voltage to the target sense voltage. Up to 100 mA should be provided on TARGET PROCESSOR VOLTAGE
so that debug adapters can drive their shifter / optocoupler directly from this line.
Pin | Signal | Volt |
---|---|---|
1 (red) | TARGET PROCESSOR VOLTAGE | +1.8V-3.3V |
2 (blk) | CONSOLE TX (OUT) | +3.3V |
3 (blk) | CONSOLE RX (IN) | +3.3V |
4 (blk) | SWDIO | +3.3V |
5 (blk) | SWCLK | +3.3V |
6 (blk) | GND | GND |
Solder pads on board next to connector:
Pad | Signal | Volt |
---|---|---|
1 | NRST (reset) | +3.3V |
2 | GPIO1 (free GPIO) | +3.3V |
3 | GPIO2 (free GPIO) | +3.3V |
For questions regarding the connector series, please contact the Dronecode Industrial Community director at lorenz@px4.io.