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docs: update boards/Dropbear
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‎boards/Dropbear.md‎

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title: Dropbear
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description:
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published: true
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date: 2024-12-08T02:56:50.482Z
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date: 2024-12-08T23:59:49.219Z
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tags:
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editor: markdown
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dateCreated: 2020-12-24T00:42:27.964Z
@@ -69,32 +69,32 @@ The Dropbear ECU uses 2x 24 pin Delphi Sicma connectors. The connectors are keye
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> Note connector alignment in above image
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{.is-info}
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| Pin | Direction | Max Current | Purpose | Comment |
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|-----|-----------|--------------|-----------------|-------------------------------------------------------------------------|
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| A1 | Output | 2A | Injector 1 | Injector 1 output |
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| A2 | Output | 2A | Injector 2 | Injector 2 output |
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| A3 | Output | 2A | Injector 3 | Injector 3 output |
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| A4 | Output | 2A | Injector 4 | Injector 4 output |
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| A5 | Output | 2A | Injector 5 | Injector 5 output |
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| A6 | Output | 2A | Injector 6 | Injector 6 output |
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| A7 | Output | 2A | Injector 7 | Injector 7 output |
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| A8 | Output | 2A | Injector 8 | Injector 8 output |
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| B1 | Output | 100mA | Ignition 1 | Ignition 1 output. 5v or 12v depending on switch selection. **Do not connect directly to high current coils**, only connect to igniter or 'smart' coil |
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| B2 | Output | 100mA | Ignition 2 | Ignition 2 output. 5v or 12v depending on switch selection. **Do not connect directly to high current coils**, only connect to igniter or 'smart' coil |
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| B3 | Output | 100mA | Ignition 3 | Ignition 3 output. 5v or 12v depending on switch selection. **Do not connect directly to high current coils**, only connect to igniter or 'smart' coil |
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| B4 | Output | 100mA | Ignition 4 | Ignition 4 output. 5v or 12v depending on switch selection. **Do not connect directly to high current coils**, only connect to igniter or 'smart' coil |
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| B5 | Output | 100mA | Ignition 5 | Ignition 5 output. 5v or 12v depending on switch selection. **Do not connect directly to high current coils**, only connect to igniter or 'smart' coil |
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| B6 | Output | 100mA | Ignition 6 | Ignition 6 output. 5v or 12v depending on switch selection. **Do not connect directly to high current coils**, only connect to igniter or 'smart' coil |
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| B7 | Output | 100mA | Ignition 7 | Ignition 7 output. 5v or 12v depending on switch selection. **Do not connect directly to high current coils**, only connect to igniter or 'smart' coil |
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| B8 | Output | 100mA | Ignition 8 | Ignition 8 output. 5v or 12v depending on switch selection. **Do not connect directly to high current coils**, only connect to igniter or 'smart' coil |
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| C1 | Output | 2A | Boost | Ground switching output for use with boost control solenoid |
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| C2 | Output | 2A | Fan. | Ground switching output for triggering a fan relay. **Do not drive fan directly from this pin, use only with relay** |
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| 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 [Stepper Driver](#stepper-driver)). Tuner Studio pin #26 |
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| 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 [Stepper Driver](#stepper-driver)). <br/>Tuner Studio pin #27 |
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| 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 [Stepper Driver](#stepper-driver)). <br/>Tuner Studio pin #28 |
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| C6 | Output | 2A | Spare 1/Idle 2/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 [Stepper Driver](#stepper-driver)). This is the default pin for Idle 2 when using a 3 wire PWM valve. <br/>Tuner Studio pin #29 |
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| 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** |
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| C8 | Input | 15A | Power Ground | Connect to battery negative. |
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| Pin | Direction | Max Current | Purpose | Tuner Studio Pin | Comment |
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|-----|-----------|--------------|-----------------|-----|-------------------------------------------------------------------------|
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| A1 | Output | 2A | Injector 1 | N/A | Injector 1 output |
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| A2 | Output | 2A | Injector 2 | N/A | Injector 2 output |
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| A3 | Output | 2A | Injector 3 | N/A | Injector 3 output |
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| A4 | Output | 2A | Injector 4 | N/A | Injector 4 output |
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| A5 | Output | 2A | Injector 5 | N/A | Injector 5 output |
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| A6 | Output | 2A | Injector 6 | N/A | Injector 6 output |
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| A7 | Output | 2A | Injector 7 | N/A | Injector 7 output |
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| A8 | Output | 2A | Injector 8 | N/A | Injector 8 output |
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| B1 | Output | 100mA | Ignition 1 | N/A | Ignition 1 output. 5v or 12v depending on switch selection. **Do not connect directly to high current coils**, only connect to igniter or 'smart' coil |
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| B2 | Output | 100mA | Ignition 2 | N/A | Ignition 2 output. 5v or 12v depending on switch selection. **Do not connect directly to high current coils**, only connect to igniter or 'smart' coil |
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| B3 | Output | 100mA | Ignition 3 | N/A | Ignition 3 output. 5v or 12v depending on switch selection. **Do not connect directly to high current coils**, only connect to igniter or 'smart' coil |
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| B4 | Output | 100mA | Ignition 4 | N/A | Ignition 4 output. 5v or 12v depending on switch selection. **Do not connect directly to high current coils**, only connect to igniter or 'smart' coil |
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| B5 | Output | 100mA | Ignition 5 | N/A | Ignition 5 output. 5v or 12v depending on switch selection. **Do not connect directly to high current coils**, only connect to igniter or 'smart' coil |
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| B6 | Output | 100mA | Ignition 6 | N/A | Ignition 6 output. 5v or 12v depending on switch selection. **Do not connect directly to high current coils**, only connect to igniter or 'smart' coil |
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| B7 | Output | 100mA | Ignition 7 | N/A | Ignition 7 output. 5v or 12v depending on switch selection. **Do not connect directly to high current coils**, only connect to igniter or 'smart' coil |
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| B8 | Output | 100mA | Ignition 8 | N/A | Ignition 8 output. 5v or 12v depending on switch selection. **Do not connect directly to high current coils**, only connect to igniter or 'smart' coil |
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| C1 | Output | 2A | Boost | 24 | Ground switching output for use with boost control solenoid |
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| C2 | Output | 2A | Fan. | 25 | Ground switching output for triggering a fan relay. **Do not drive fan directly from this pin, use only with relay** |
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| C3 | Output | 2A | Spare 2/Stepper-B2 | 26 | 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 [Stepper Driver](#stepper-driver)).
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| C4 | Output | 2A | Idle/Stepper-B1 | 27 | 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 [Stepper Driver](#stepper-driver)). |
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| C5 | Output | 2A | VVT/Stepper-A1. | 28 | 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 [Stepper Driver](#stepper-driver)). |
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| C6 | Output | 2A | Spare 1/Idle 2/Stepper-A2 | 29 | 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 [Stepper Driver](#stepper-driver)). This is the default pin for Idle 2 when using a 3 wire PWM valve. |
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| C7 | Output | 1.5A | Fuel Pump | N/A | Ground switching output for triggering fuel pump relay. **Do not drive pump directly from this pin, use only with relay** |
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| C8 | Input | 15A | Power Ground | N/A | Connect to battery negative. |
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## Board Configuration
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The Dropbear board contains 4 switches and 1 DIP switch pair that can be used to change the setup of the ECU.

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