Pinout, and changes compared to VEMS v3.x ECU pinout.
The new ECU design allows 200+ IO (easy to change to lower or larger number as necessary), first family member is intentionally very similar to the proven and rugged EC36 and EC18 design reliably controlling engines (with high precision, and double WBO2) for 17+ years and guaranteed (by us) to be available for another 2 decades to come.
EC36 and EC18 pinout
Differences:
- EC36/pin18 has LOW voltage flyback by default optimal for idle-valve-solenoid (not recommended for injector)
- EC36/ ... injector outputs
Same:
- power and grounds
- stepper,
- VT communications (if using serial, not USB)
6+ communication busses
- 2+1 CAN busses
- 2 * RS485
- (up to 1000m, much more than CAN; very reliable for 5..10m and easy to work with). Megabit speed possible (but 115..230k most of the time)
- 2 * RS232
- traditional, works reliably for a few meters (including BT-RS232). Typically 19200..115200 baud. Might not be reliable with USB and poor windows drivers (unfortunately that is often the case, it's the USB and windows most of the time, not the RS232).
- 1 * USB (USB-B)
- USB is a rather bad design (mechanically also troublesome), but wide-spread in PC-s, notebooks, androids. High-speed (could be useful for downloading large sets of ECU datalogs)
- other: optional wifi or ethernet or other WAN connection (possibly LORA) via adapter