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docs: create boards/Dropbear

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Administrator 2020-12-24 00:42:39 +00:00 committed by Josh Stewart
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---
title: Dropbear
description:
published: true
date: 2020-12-24T00:42:27.964Z
tags:
editor: markdown
dateCreated: 2020-12-24T00:42:27.964Z
---
# Header
Your content here
# Pin out
Black Connector
| Pin | Direction | Max Current | Purpose | Comment |
|-----|-----------|-------------|---------|---------|
| A1 | Input | 5A | Switched 12v | Main power input. Connect to switched 12v power via 5A fuse |
| A2 | Input | 15A | Power Ground | Connect to battery negative. |
| A3 | Output | 80mA | Sensor reference | Used for sensors requiring a 5v reference (Eg TPS). **Do not use for powering offboard systems.** |
| A4 | N/A | N/A | Not used. | |
| A5 | Input | N/A | Spare Digital In 2| 12v or Ground switching digital input. Can be used for VSS, Idle Up etc |
| A6 | Both | N/A | CAN L | CAN L connection |
| A7 | Both | N/A | CAN H | CAN H connection |
| A8 | Input | 15A | Power Ground | Connect to battery negative. |
| B1 | Output | 100mA | Tacho | 12v square wave output for use as input to a tachometer |
| B2 | Input | N/A | Crank Primary | Primary crank sensor (CKP) input. Can be 12v, Ground switching or the positive wire of a Vr sensor. See 'Crank/Cam' section below |
| B3 | Input | N/A | Crank Negative | **Only used with a VR sensor.** Connect to negative side of VR crank sensor. See 'Crank/Cam' section below |
| B4 | Input | N/A | Cam Primary | Primary crank sensor (CKP) input. Can be 12v, Ground switching or the positive wire of a Vr sensor. See 'Crank/Cam' section below |
| B5 | Input | N/A | Cam Negative | **Only used with a VR sensor.** Connect to negative side of VR cam sensor. See 'Crank/Cam' section below |
| B6 | Input | N/A | Spare Digital 1| 12v or Ground switching digital input. Can be used for VSS, Idle Up etc |
| B7 | Input | N/A | Clutch input. | Ground switching digital input that goes to ground when clutch is engaged. Do not feed 12v on this input |
| B8 | Input | N/A | Flex sensor | Signal wire from GM/Continental Flex sensor. |
| C1 | Output | N/A | Analog ground | Ground reference for use by sensors such as TPS, IAT, CLT. **Do not use for powering offboard controllers** |
| C2 | Input | N/A | Spare Analog 1 | Spare analog input for use with sensors such as fuel pressure/temperature, oil pressure etc. Should be a 0-5v signal |
| C3 | Input | N/A | Spare Analog 2 | Spare analog input for use with sensors such as fuel pressure/temperature, oil pressure etc. Should be a 0-5v signal |
| C4 | Input | N/A | O2 Sensor | Connect to the 0-5v signal wire of external wideband controller. Can also be used with 0-1v output from narrowband sensor however wideband is **strongly** recommended |
| C5 | Input | N/A | Coolant Sensor | Connect to one side of 2 wire coolant sensor (CLT). Other side of sensor connected to pin C1 |
| C6 | Input | N/A | Inlet Air Sensor | Connect to one side of 2 wire inlet air temp sensor (IAT). Other side of sensor connected to pin C1 |
| C7 | Input | N/A | Throttle Sensor | Connect to signal line of variable throttle position sensor (TPS). Other pins of sensor should connect to C1 and A3 |
| C8 | Input | N/A |External MAP Sensor| Signal line if using external MAP sensor. Input should be 0-5v and MAP source switch should be set to 'Ext.'. See below for 'Switch Configuration'. If using internal sensor this pin should be left unconnected. |
Grey Connector
| Pin | Direction | Max Current | Purpose | Comment |
|-----|-----------|-------------|---------|---------|
| A1 | Output | 2A | Injector 1 | Injector 1 output |
| A2 | Output | 2A | Injector 2 | Injector 2 output |
| A3 | Output | 2A | Injector 3 | Injector 3 output |
| A4 | Output | 2A | Injector 4 | Injector 4 output |
| A5 | Output | 2A | Injector 5 | Injector 5 output |
| A6 | Output | 2A | Injector 6 | Injector 6 output |
| A7 | Output | 2A | Injector 7 | Injector 7 output |
| A8 | Output | 2A | Injector 8 | Injector 8 output |
| B1 | Output | 100mA | Ignition 1 | Ignition 1 outout. 5v or 12v depending on switch selection. **Do not connect directly to high current coils**, only connect to igniter or 'smart' coil |
| B2 | Output | 100mA | Ignition 2 | Ignition 2 outout. 5v or 12v depending on switch selection. **Do not connect directly to high current coils**, only connect to igniter or 'smart' coil |
| B3 | Output | 100mA | Ignition 3 | Ignition 3 outout. 5v or 12v depending on switch selection. **Do not connect directly to high current coils**, only connect to igniter or 'smart' coil |
| B4 | Output | 100mA | Ignition 4 | Ignition 4 outout. 5v or 12v depending on switch selection. **Do not connect directly to high current coils**, only connect to igniter or 'smart' coil |
| B5 | Output | 100mA | Ignition 5 | Ignition 5 outout. 5v or 12v depending on switch selection. **Do not connect directly to high current coils**, only connect to igniter or 'smart' coil |
| B6 | Output | 100mA | Ignition 6 | Ignition 6 outout. 5v or 12v depending on switch selection. **Do not connect directly to high current coils**, only connect to igniter or 'smart' coil |
| B7 | Output | 100mA | Ignition 7 | Ignition 7 outout. 5v or 12v depending on switch selection. **Do not connect directly to high current coils**, only connect to igniter or 'smart' coil |
| B8 | Output | 100mA | Ignition 8 | Ignition 8 outout. 5v or 12v depending on switch selection. **Do not connect directly to high current coils**, only connect to igniter or 'smart' coil |
| C1 | Output | 2A | Boost | Ground switching output for use with boost control solenoid |
| C2 | Output | 2A | Fan. | Ground switching output for triggering a fan relay. **Do not drive fan directly from this pin, use only with relay** |
| C3 | Output | 2A | Spare 2/Stepper-B2 | Can be used either as ground switching output for general purpose use or 12v output if using a stepper idle control (Requires stepper driver to be fitted, see below) |
| C4 | Output | 2A | Idle/Stepper-B1 | Can be used either as ground switching idle output (For use with PWM valves) or 12v output if using a stepper idle control (Requires stepper driver to be fitted, see below) |
| C5 | Output | 2A | VVT/Stepper-A1. | Can be used either as ground switching VVT output or 12v output if using a stepper idle control (Requires stepper driver to be fitted, see below) |
| C6 | Output | 2A | Spare 1/Stepper-A2 | Can be used either as ground switching output for general purpose use or 12v output if using a stepper idle control (Requires stepper driver to be fitted, see below) |
| C7 | Output | 1.5A | Fuel Pump | Ground switching output for triggering fuel pump relay. **Do not drive pump directly from this pin, use only with relay** |
| C8 | Input | 15A | Power Ground | Connect to battery negative. |