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Topic: Arduino Mega Digital I/O voltage? (Read 12337 times) previous topic - next topic

retrolefty

Quote
For this exernal switching transistor is there a specific one I should use?


Not too critical, the transistor used has to have maximum voltage and current ratings well above (2X-5X) the actual voltage and current levels you will be switching. It's best to follow a proven schematic and there are plenty of examples around the arduino playground showing use of transistors as switches.

Lefty

tpyardu

Thank you, have had the LCD working for a while now and wiring up a keypad at the moment... its small steps but at least it's progress!

will look at more examples and try to make it all work now... have enough to keep myself busy so nice one again  8)

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