Official Speeduino 0.4.3c (THT) bare PCB

Hardware feature List:

Supports up to 8 cylinders fuel and ignition using 4 channels of fuel and 4 channels of ignition outputs, 2 (Even fire only), 3 and 4 cylinder engines with full sequential fuel and ignition. 6 (even fire only) and 8 cylinder engines are supported with wasted spark and 2 squirts per cycle.

• 4 Injector output channels.

• 4 Ignition output channels with selectable logic levels (12V/5V).

• 4 Pre-configured analog input channels for CLT, IAT, TPS, and O2 sensors.

• 2 Trigger inputs for crankshaft and camshaft position sensors.

• 1 Dual VR conditioner mount (conditioner not included).

• 1 MAP sensor mount location.

• 1 DRV8825 stepper module mount for controlling stepper idle control valves.

• 4 medium-current spare outputs (e.g., fuel pump, thermo fan, boost control, VVT, etc)

• 5 unpopulated/configured optional low-current spare outputs in "proto" section, including tachometer-out

• 1 Flex fuel sensor input in "proto" section,

• 1 Clutch switch input (ground switching).

• 1 Serial header (Serial0) often used with HC-05/HC-06 Bluetooth module (see Speeduino Wiki for setup instructions).