In SX Microcontrollers, SX/B Compiler and SX-Key Tool, william wrote:

GAF,

IGBTs or Mosfets are better to drive the injectors?

bennetdan,

Why do we need PWM Output for the injectors?
Wouldn't a simple high or low output will do?
What is this TCU thing about?  Seems like wasting a lot of pins.

16.) Serial Port to PC or Notebook ( 2 pins)
17.) Serial Port to Propeller chip to display RPM and such on a small LCD TV.  (2 pins)
 :cool: 

John,

The Murata 20Mhz and 50Mhz thru hole ceramic resonator that Parallax sells will do just fine.
Don't forget a 1M ohm parallel resistor across OSC1 and OSC2 for stability.

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