Schroedingers_hat

Doing some reading, it looks like CHIP just had a very similar issue a little while ago. The alpha version could idle or do a small amount of work at around 80mA, but the newer versions are >200mA. We've started using raspberry pis as they will work on 80-100mA if you turn the ethernet and gpu off. Ideally I'd be using a microcontroller as I'm not actually using the CPU resources (although having heaps of memory is really nice), but my country is about to have no 2G network, and all of the 3G options I have found that do not talk over USB add at least $100 to the unit price.

@chwe The 34C is the rev1.1 board with the ethernet and wifi disabled and ram/cpu underclock. Heat isn't the main issue here, it's energy input as we're solar powering them.

Hi, Just wondering if there was any updates or new info about this in the last month. I'm having an identical issue. I also can't seem to achieve any meaningful underclock on the new revision.

Hi Everyone, I'm attempting to use a bunch of OrangePi Zeros for a low power sensing application. I have an OrangePi Zero 512M which I started developing on. It works extremely well and with the GPU/ethernet off and CPU/Ram underclocked it operates at about 30-34 degrees C, using only a tiny amount of power. I recently got a bunch of OrangePi Zero 256M models, I've tried three of them now and (either a fresh install of the same version of Armbian or the exact same SD card as the 512M is running on) they all run around 55-60C at idle and overheat/freeze when attempting to install packages or compile. Any ideas? Is there some setting I could have changed that lives on the SoC or flash rather than SD card that accounts for the lower power use?