[fram]

HI All,

Small questions about schematic V0.4.4B, especially Clutch input and Flex inputs.

-Flex sensor is usually 12V powered, output is 12V PWM digital signal and go through digital input of the MCU.
what is the purpose of C5?

-Clutch input: what kind of sensor used in this case? Digital signal?

Thanks for the feedback.

[pazi88]

Actually the flex fuel sensors normally have open collector output which switches between floating and ground. So with 5v pull-up in speeduino it can be converted to 0-5v square wave. And obviously 0-12v square wave with pull-up to 12v.

[PSIG]

-Clutch input: what kind of sensor used in this case? Digital signal?

Most clutch switches are simple OEM mechanical switches to ground (use input pullup). It can instead be a switch to voltage (high signal), so look at the settings in TS for ideas based on the options there. A biased Hall sensor reading a moving portion of clutching mechanism comes to mind.

David

[fram]

Thanks to both of you!
I'll check OEM sensor and switch datasheet/notes if available.
The same about TS config. for a better understanding.