Author Topic: Can programming pins on AtTiny84a be connnected to LEDS while being programmed?  (Read 861 times)

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Offline buck converter

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So I want to use a Attiny84a-ssu to drive some leds. Can LEDS be connected to the programming pins (sck, mosi, miso) while being programmed?
I only need 5 leds, but i am etching single layer boards at home and it is for a REALLY tiny project. It would make the board layout much smaller if the programming pins were driving the LEDs.
I would be programming it with my UNO and the Arduino IDE.
Just me and my scope.

Online ataradov

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Online Mechatrommer

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yes you can as long as you have high impedance to the led or anything for that matter. (the high value resistor, such as R4 R5 R6 in Alex's diagram)
if something can select, how cant it be intelligent? if something is intelligent, how cant it exist?

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