Quote:
Originally Posted by theatrus
Note that the 555 can't power the solenoid directly. An N channel FET or an NPN transistor is required. Also, to get the different duty cycle the 555 board needs a diode in the timing circuit. You can bodge it in if need be.
I'll post a complete schematic and suggested parts today, and plan on doing a build soon to validate it.
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Nice, I can't wait. Even though I already bought myself a burkett solenoid and a fancy needle valve to replace my carbon doser. This could actually be a better alternative to using a needle valve.