- Sun Aug 04, 2024 8:19 pm
#69120
Hi,
I am trying to setup my 1 cyl. 200ccm scooter engine with a Speeduino board (Blitzbox) and I am wondering about the correct trigger setting. The engine has on VR pickup coil at TDC on the crankshaft. No CAM sensor. So I get 1 signal per revolution.
The Blitzbox board (https://github.com/oelprinz-org/Blitzbo ... ree/master has a Max 9926 and VR+ is connected to the pickup coil, VR- to GND.
I have set the trigger decoder to "Generic Distributor" but that does not seem to do the job. When cranking RPM in Tunerstudio goes up to (unrealistic) values of 2000 and when the engine stops the displayed RPM slowly (within 10-15s) goes down to 0 RPM.
What would be the appropriate trigger decoder to use here?
The picture shows the trigger signal (blue curve) as measured on VR+. This occurs once every revolution.
Thanks a lot Karsten
I am trying to setup my 1 cyl. 200ccm scooter engine with a Speeduino board (Blitzbox) and I am wondering about the correct trigger setting. The engine has on VR pickup coil at TDC on the crankshaft. No CAM sensor. So I get 1 signal per revolution.
The Blitzbox board (https://github.com/oelprinz-org/Blitzbo ... ree/master has a Max 9926 and VR+ is connected to the pickup coil, VR- to GND.
I have set the trigger decoder to "Generic Distributor" but that does not seem to do the job. When cranking RPM in Tunerstudio goes up to (unrealistic) values of 2000 and when the engine stops the displayed RPM slowly (within 10-15s) goes down to 0 RPM.
What would be the appropriate trigger decoder to use here?
The picture shows the trigger signal (blue curve) as measured on VR+. This occurs once every revolution.
Thanks a lot Karsten
Attachments
VR+ input (blue)
vrsignal.png (537.95 KiB) Viewed 755 times
vrsignal.png (537.95 KiB) Viewed 755 times