The second speeduino shield board is intended to be much more usable and feature complete than the original v0.1 prototype. To this end, I expect it to have the following features:
- 4 fully protected High impedance injector channels (Each with a LED indicator)
The board can be configured in multiple ways depending on the hardware you use and way your setup is configured.
Optional Components
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If using a VR crank sensor, the board will require the addition of a VR conditioner. The board has been designed to work with the dual VR conditioner from JBPerf (http://www.jbperf.com/dual_VR/index.html) which will plug directly in. Other VR conditioners will also likely work, but have not been tested.
Jumper Configs
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Depending on the type of crank and cam sensors you have, there are a number of jumpers that will need to be set. The jumpers that need setting are:
- JP1 - This sets whether the Ignition outputs are 12v or 5v. Note that even if you set this to 12v you should \*\*NOT\*\* connect these directly to a high current coil. These outputs should only ever go to a logic level coil or an igniter
- JP2 - Whether or not the RPM1 (Crank) input should be routed via the (Optional) VR conditioner. This should be set to VR when using either a VR sensor or a hall sensor that switches between 0v-12v
- JP3 - Same as JP2, but for the RPM2 (Cam) input
- JP4 - 10k pullup resistor for RPM1 input. Should be jumpered ('On') when a sensor is used that switches between ground and floating (Which is most hall effect sensors)
- JP5 - Same as JP4, but for the RPM2 (Cam) input
To make this simpler, the most common sensor types and their required configurations are below: