How to disable power indicator LED?

[feklee]

On the wiki page Digispark tricks it says: “Be aware that the power indicator LED uses a fair bit of power, so it's worth disabling this if you need to be very careful, and in current versions of the Digispark hardware a couple of milliamps are consumed constantly by the USB connector circuitry, even if you aren't using the USB interface.”

How do I disable the power indicator LED?

[granzeier]

The schematic from the product description page (https://digistump.com/wiki/digispark/tutorials/digispark) shows that the LED is hard wired to the +V. This agrees with what I have seen on my Digisparks (although they are actually clones, so YMMV.)

The only way that I know of, to "disable" the power LED (or the LED tied to PB0 or PB1) is to grab the LED with a good needle-nosed pliers and break it off, or desolder it. It would not be too hard to design a PCB for the Tiny85 without the LEDs, but it would not be really cheap.

[PeterF]

Cut the trace on the PCB. Between the power LED and the diode to the right of it (with the USB connector pointing to the left, and board right way up), there is a white rectangle on the silk-screen indicating where to use a knife or scorer and cut the trace. And if you later want the LED again, you should be able to bridge the break or use some thin wire to bypass the cut.

[Rolandnut]

Thank you for the way. It helped me a lot. It is really useful.