Speeduino supports an ever growing number of crank and cam decoders and trigger wheels. This includes some of the more common OEM setups as well as those favoured in the aftermarket (Such as the missing tooth wheels).
The list below includes all those that are currently supported. They each lead to a page with details on using the decoder (These pages are a Work in Progress)
|Decoder||Applications / Description|
|Missing Tooth||A crank wheel with 1 or more 'missing' teeth|
|Dual Wheel||Two signals combined from two different wheels|
|Basic Distributor||Untimed pulses that are the equivalent of a tacho or distributor pulse|
|GM 7X||Multi tooth pulse|
|4G63||As used on many 4 cylinder Mitsubishis and NA/NB Miata / MX-5|
|GM 24X||Commonly used on GM LS1 V8|
|Jeep 2000||6 Cylinder Jeep engines from '91 to 2000|
|Audi 135||Audi engines with 135 pulses-per-revolution|
|Honda D17||Honda 4 cylinder D17 engine|
|Miata 99||1.8L Miata/MX5 from '99 to '00|
|Non-360||A variation of the dual wheel decoder that can be used with tooth counts that do not divide evenly into 360|
All signals need to be conditioned to a 3.3v - 5v dc square wave before being used by the firmware.