The v0.3 board was the first widely available Speeduino shield and is suitable for many typical 1-4 cylinder injection and ignition applications (Excluding direct injected engines). It uses screw terminals for all connections in order to make test wiring simple and quick for prototyping.
The v0.3 boards includes the following features:
The proto area can be used for adding your own circuits on to Speeduino if required or simply as a convenient access point to various connections. The connections broken out to the proto board are:
Refer to the Board revisions for a link to the Bill of Materials (BOM) of your specific board.
Assembly of a complete board is relatively straightforward with all components being through hole and labelled on the board (See above mentioned BoM for parts list). Whilst it does not matter which order components are installed, the following is recommended for simplicity:
Correct capacitor orientation
4. All jumper headers (JP*)
5. Arduino pins:
The board can be configured in multiple ways depending on the hardware you use and way your setup is configured.
Multiple functions within Speeduino have adjustable outputs or can be set to Board Default. The following are the Default pin outs for the v0.3
Note: These defaults are applicable to the Jan 2017 firmware and newer
|Function||Board output||Arduino pin|
|Boost control||S2 Screw terminal||7|
|VVT||S1 Screw terminal||6|
|Idle 1||Idle Screw terminal||5|
|Idle 2 (3 wire idle valves)||Proto area (Labelled 53)||53|
|Fuel pump||FP Screw terminal||4|
|Launch/Clutch||Proto area (Labelled 51)||51|
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. There is now also an official VR board that can be used, see link on the left.
For users having difficulty obtaining the SP721 used in some versions, see info on the SP721 Diode Alternate page.
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:
To make this simpler, the most common sensor types and their required configurations are below:
|Crank Sensor||Cam Sensor||JP2||JP3||JP4||JP5|
|0v-12v Hall Sensor (Requires VR Conditioner)||-||VR||Off||Off||Off|
|Hall sensor||Floating Hall sensor||Hall||Hall||On||On|
|VR Sensor||Floating Hall sensor||VR||Hall||Off||On|
|V0.3.7||Added bluetooth header||Same as v0.3.6|
|V0.3.6||Added filter caps to both crank and cam inputs||Download|
|V0.3.5||Added flex fuel input to proto area. Many routing improvements.||Download|
|V0.3.4||Routing cleanup and more useful silkscreening||Same as v0.3.3|
|V0.3.3||Replaced diode array with SP721||Download|
|V0.3.2||Added Proto area. Removed spare IC socket (Had not been used)||Download|
|V0.3.1||Moved MAP sensor closer to edge of board. Beefier routing on the high current outputs (Including injectors)||Download|