The v0.4 board is a testing board that was developed with the goals of reproducing the existing v0.3 boards capabilities, but with the following improvements:
Note: The v0.4 is NOT intended as a replacement for the v0.3 line of boards! The 2 are designed with different goals in mind. The v0.4 is intended to be integrated more closely into existing wiring, with the aim being that interface boards can be used to easily connect through the IDC40 connector. Unless you understand the interface on the v0.4 board and believe it is the best option for your install, the v0.3 may well be a better option for you.
The v0.4 boards includes the following features:
Note that there are some differences between the various versions of the board, however the pinouts on the main IDC40 connector remain the same.
Note: Injector Pins have 1/2 and 2/2 markings this is to more easily and clearly route injectors for semi sequential and batch modes. If the application requires less than 4 injectors simply use either pin 1/2 or 2/2. If the application requires 5 or more injectors it is recommended to use both 1/2 and 2/2 when available to more evenly distribute the current from the injector coils triggerting. See Injector Wiring for more specific details.
|1||Injector 1 - Pin 1/2|
|2||Injector 2 - Pin 1/2|
|3||Injector 3 - Pin 1/2|
|4||Injector 3 - Pin 2/2|
|5||Injector 4 - Pin 1/2|
|6||Injector 4 - Pin 2/2|
|11||MAP Sensor (0v-5v)|
|14||Proto Area 1 (0.4.4b+ Flex Sensor)|
|15||Proto Area 2 (0.4.4b+ Fan)|
|16||Proto Area 3 (0.4.4b+ Fuel Pump)|
|17||Proto Area 4 (0.4.4b+ Tachometer)|
|18||Proto Area 5 (0.4.4b+ Clutch)|
|20||Inlet Air Temp (IAT)|
|24||Cam Input / VR2+|
|25||Crank Input / VR1+|
|26||VR2- (Not used for hall sensor)|
|27||VR1- (Not used for hall sensor)|
|29||Idle Stepper 2B|
|30||Idle Stepper 2A|
|31||Idle Stepper 1A|
|32||Idle Stepper 1B|
|36||Idle 2 (For use with 3 wire idle valves)|
|39||Injector 2 - Pin 2/2|
|40||Injector 1 - Pin 2/2|
Assembly of a complete board is virtually identical to the v0.3 and remains relatively straightforward with all components being through hole and labelled on the board. Whilst it does not technically matter which order components are installed, the following is recommended for simplicity:
Take note that C14 and C16 are polarised capacitors, meaning that they must be put in the correct way around. The capacitors should be marked with a + sign on one side. On the PCB, the positive side is indicated by a line on the capacitor symbol.
NOTE: ALL self assembly boards have the MAP sensor with the hole at the top. All assembled boards will typically have the hole on the bottom
This video is for the v0.3 board, but it largely applies to v0.4 designs as well.
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 v0.4, however all of these functions can be reassigned to other pins if required (Eg to use the onboard high current outputs)
|Function||Board output||Arduino pin|
|Boost control||IDC Pin 35||7|
|VVT||IDC Pin 38||4|
|Idle 1||IDC Pin 37||5|
|Idle 2 (3 wire idle valves)||IDC Pin 36||6|
|Fuel pump||Proto area (45) (0.4.4b+ IDC 16)||45|
|Fan||Proto area (47) (0.4.4b+ IDC 15)||47|
|Tacho||Proto area (49) (0.4.4b+ IDC 17)||49|
|Launch / Clutch||Proto area (51) (0.4.4b+ IDC 18)||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. These have been out of stock to purchase directly for some time but can be built from the parts list as the instructions are still available.
There is also an official VR board that can be purchased from the speeduino shop which also plugs in directly.
Most partner resellers have their own conditioners with other features such as LEDs for when the signal is triggering high / low. Other 3rd party VR conditioners will also likely work but obviously not all configurations can be validated.
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.
Some VR sensors can send high AC voltage into the arduino board. If you are unsure of your sensor type identify it before connecting it to the board. Using a VR sensor with the ‘direct’ pins closed (JP2) and or (JP3) may cause damage to the microprocessor. Danger!
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|
|Hall sensor||Hall sensor||Hall||Hall||On||On|
|VR Sensor||Hall sensor||VR||Hall||Off||On|
You can solder wires directly to the board or use IDC (Insulation Displacement Contact) connectors. The 40-pin IDC is the connector that was used on computer drive ribbon cables for years and old computer cables can be used. A heavier cable, called DuPont cable is recommend for long term use though. Later in the IDE/ATA interfaces life the speed was increased and this required a new fine 80-wire cable. These cables are NOT compatible. Some of the pins are connected together causing the magic blue smoke to be released.
|V0.4.4b||A new ground up, all SMD, board design that includes additional onboard drivers and protection circuits. It is electrically and physically compatible with all other v0.4 versions.||Not Required|
|V0.4.4||Modified for easier automated assembly, including some SMD components and mounting the pressure sensor flat side up. Run/program switch added. Only sold officially as complete boards||Not Required|
|V0.4.3||Filter capacitors added to both primary and secondary RPM inputs. Voltage clamp added to secondary RPM input. Flex fuel input added to proto area||Download|
|V0.4.2||Considerable number of routing improvements. Neater proto area layout. Voltage clamp added to primary RPM input||Download|
|V0.4.1||Added Proto area. Replaced diode array with SP721. Added optional high current aux output socket (J5). Diode relocated on power circuit to prevent USB back feeding 5v onto 12v rail when ignition off||Same as v0.4.2|