3 ms·

I actually don't want a faster version. What I want is a more energy efficient version (still ARM) with roughly the same performance that makes it feasible to

I actually don't want a faster version. What I want is a more energy efficient version (still ARM) with roughly the same performance that makes it feasible to run on batteries or solar. Does that exist?

lhl 13y ago
The current RPi A is about 2.5W, so already pretty cheap to solar power w a battery/small panel. Search for "solar rpi" etc to find lots of examples. Depending on your use case, the Beaglebone Black is a good alternative and idles at about 1W.
tdicola 13y ago
Go bare metal and make constant use of sleep modes. The less time your system is awake and running at full speed the better. There are some cool low power chips like the Tiny Gecko: http://www.silabs.com/products/mcu/lowpower/pages/efm32tg-tiny-gecko.aspx http://www.silabs.com/products/mcu/lowpower/pages/efm32tg-ti... However you can probably get most chips down into the sub-milliamp range while asleep and run for months or more off a few batteries.
PhasmaFelis 13y ago
Why does it seem to be so difficult to run a Pi off of batteries? It draws less power than many phones. I was boggled that the Raspberry Pi AdaFruit store, which has dozens of different Pi-compatible displays, keyboards, cases, and exotic sensors and output devices, doesn't have a single external battery pack.
- throwawayaway 13y ago
  it doesn't seem to be difficult: check out this thread or google for hamish cunningham. http://www.raspberrypi.org/forums/viewtopic.php?f=41&t=25674 http://www.raspberrypi.org/forums/viewtopic.php?f=41&t=25674
higherpurpose 13y ago
I imagine a 800-1,000 Mhz Cortex A53 version would be 0.5-1W, if they decided to make one for next year. But not sure if that's their target market. They will probably keep power consumption about the same, and launch one at a higher clock speed, perhaps even as dual-core, to better run other distros on it (such as Ubuntu).

lhl 13y ago

The current RPi A is about 2.5W, so already pretty cheap to solar power w a battery/small panel. Search for "solar rpi" etc to find lots of examples. Depending on your use case, the Beaglebone Black is a good alternative and idles at about 1W.

tdicola 13y ago

Go bare metal and make constant use of sleep modes. The less time your system is awake and running at full speed the better. There are some cool low power chips like the Tiny Gecko: http://www.silabs.com/products/mcu/lowpower/pages/efm32tg-tiny-gecko.aspx http://www.silabs.com/products/mcu/lowpower/pages/efm32tg-ti... However you can probably get most chips down into the sub-milliamp range while asleep and run for months or more off a few batteries.

PhasmaFelis 13y ago

Why does it seem to be so difficult to run a Pi off of batteries? It draws less power than many phones. I was boggled that the Raspberry Pi AdaFruit store, which has dozens of different Pi-compatible displays, keyboards, cases, and exotic sensors and output devices, doesn't have a single external battery pack.

throwawayaway 13y ago
it doesn't seem to be difficult: check out this thread or google for hamish cunningham. http://www.raspberrypi.org/forums/viewtopic.php?f=41&t=25674 http://www.raspberrypi.org/forums/viewtopic.php?f=41&t=25674

higherpurpose 13y ago

I imagine a 800-1,000 Mhz Cortex A53 version would be 0.5-1W, if they decided to make one for next year. But not sure if that's their target market. They will probably keep power consumption about the same, and launch one at a higher clock speed, perhaps even as dual-core, to better run other distros on it (such as Ubuntu).