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docs: update configuration/Spark_Settings

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Administrator 2020-01-07 00:24:17 +00:00 committed by Josh Stewart
parent a293a45534
commit c939fa1ecc
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configuration/Spark_Settings.md
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---
title: Spark Settings
description: Configuration options for the ignition outputs
published: true
date: 2020-01-07T00:24:16.790Z
tags:
---
Overview Overview
-------- --------
@ -8,10 +16,7 @@ Please ensure you have reviewed these settings prior to attempting to start your
Settings Settings
-------- --------
<center> ![spark_settings.png](/img/ignition/spark_settings.png){.align-center}
<img src="https://raw.githubusercontent.com/speeduino/wiki/master/ignition/spark_settings.png" width="550" />
</center>
- **Spark Output mode** - Determines how the ignition pulses will be outputted and is very specific to your ignition wiring. **Note that no matter which option is selected here, ignition signals ALWAYS fire in numerical order (ie 1-&gt;2-&gt;3-&gt;4) up to the maximum number of outputs**. The firing order of the engine is accounted for in the wiring order. - **Spark Output mode** - Determines how the ignition pulses will be outputted and is very specific to your ignition wiring. **Note that no matter which option is selected here, ignition signals ALWAYS fire in numerical order (ie 1-&gt;2-&gt;3-&gt;4) up to the maximum number of outputs**. The firing order of the engine is accounted for in the wiring order.
- **Wasted Spark** - Number of ignition outputs is equal to half the number of cylinders and each output will fire once every crank revolution. One spark will therefore take place during the compression stroke and the other on the exhaust stroke (aka the 'wasted' spark). This method is common on many 80s and 90s vehicles that came with specific wasted spark coils, but can also be used with individual coils that are wired in pairs. Wasted spark will function with only a crank angle reference (Eg a missing tooth crank wheel with no cam signal) - **Wasted Spark** - Number of ignition outputs is equal to half the number of cylinders and each output will fire once every crank revolution. One spark will therefore take place during the compression stroke and the other on the exhaust stroke (aka the 'wasted' spark). This method is common on many 80s and 90s vehicles that came with specific wasted spark coils, but can also be used with individual coils that are wired in pairs. Wasted spark will function with only a crank angle reference (Eg a missing tooth crank wheel with no cam signal)
- **Single Channel** - This mode sends all ignition pulses to IGN1 output and is used when the engine contains a distributor (Typically with a single coil). The number of output pulses per (crank) revolution is equal to half the number of cylinders. - **Single Channel** - This mode sends all ignition pulses to IGN1 output and is used when the engine contains a distributor (Typically with a single coil). The number of output pulses per (crank) revolution is equal to half the number of cylinders.
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### Rotary modes ### Rotary modes
<center> ![rotary_settings.png](/img/ignition/rotary_settings.png){.align-center}
<img src="https://raw.githubusercontent.com/speeduino/wiki/master/ignition/rotary_settings.png" width="550" />
</center>
Speeduino currently only supports the ignition configuration used on FC RX7 engines. Support for FD and RX8 ignition setups is in development. The leading / trailing split angle can be set as a function of the current engine load. Speeduino currently only supports the ignition configuration used on FC RX7 engines. Support for FD and RX8 ignition setups is in development. The leading / trailing split angle can be set as a function of the current engine load.
- **FC** - Outputs are configured for the Leading/Trailing setup that was used on FC RX7s. Wiring is: - **FC** - Outputs are configured for the Leading/Trailing setup that was used on FC RX7s. Wiring is:
<!-- -->
- **IGN1** - Leading (wasted) sparks - **IGN1** - Leading (wasted) sparks
- **IGN2** - Trailing spark - **IGN2** - Trailing spark
- **IGN3** - Trailing select - **IGN3** - Trailing select
- **IGN4** - Not used - **IGN4** - Not used
- **FD** - Uses the same wasted spark signal for both leading sparks as FC, but individual signals for the trailing sparks. Wiring is:
<li>
**FD** - Uses the same wasted spark signal for both leading sparks as FC, but individual signals for the trailing sparks. Wiring is:
</li>
- **IGN1** - Leading (wasted) sparks - **IGN1** - Leading (wasted) sparks
- **IGN2** - Front rotor trailing - **IGN2** - Front rotor trailing
- **IGN3** - Rear rotor trailing - **IGN3** - Rear rotor trailing
- **IGN4** - Not used - **IGN4** - Not used
- **RX8** - Individual outputs are used for each spark signal. Wiring is:
<li>
**RX8** - Individual outputs are used for each spark signal. Wiring is:
</li>
- **IGN1** - Front rotor leading - **IGN1** - Front rotor leading
- **IGN2** - Rear rotor leading - **IGN2** - Rear rotor leading
- **IGN3** - Front rotor trailing - **IGN3** - Front rotor trailing
- **IGN4** - Rear rotor trailing - **IGN4** - Rear rotor trailing
</ul>