Enchanted Objects Design Challenge - Sleeping Golem

RE: Enchanted Objects Design Challenge - Sleeping Golem

var27rag — Tue, 09 May 2017 14:49:48 GMT

Hi,

This is a brilliant idea. I was looking at replicating this on the Arduino Industrial 101 which is based of the Yun. Unfortunately Arduino has not given the layout of the board, so I don't know where the 3.3V regulator is. I can find it on the schematic but I am not able to figure it out on the board. Is there anyone who can help with this?

Best Regards,

Varun

RE: Enchanted Objects Design Challenge - Sleeping Golem

Workshopshed — Mon, 15 Jun 2015 15:38:57 GMT

Looking at Gammon Forum : Electronics : Microprocessors : Power saving techniques for microprocessors it would appear that I can turn off the ADC for a bit of power consumption improvements.

[mention:acaf6a9338de4eef8f6717d5561ed01d:e9ed411860ed4f2ba0265705b8793d05] pointed me at 104: Only the Paranoid Survive — Embedded which also has some good powersaving tips.

RE: Enchanted Objects Design Challenge - Sleeping Golem

Workshopshed — Thu, 21 May 2015 20:06:45 GMT

Caution: If you've copied the original code I recommend swapping it with this updated version as the sleep makes it challenging to re-programme the device.

I'll do something with the final version of the code so that it does not sleep if one the digital pins is high.

RE: Enchanted Objects Design Challenge - Sleeping Golem

Jan Cumps — Thu, 21 May 2015 09:40:28 GMT

You could also desolder the leds from the Arduino to eek that last mAH out of the battery.

The 3.3V power led (3.3V - LED voltage drop) / 560R.

(this may not be worth it, because they aren't on permanently)

Wireless led when on (VPIN - LED voltage drop / 270R

USB and WAN led when on : (3.3V - LED voltage drop / 330R,

Even if you manage to loose 1mA (3.3V - 2.5V)/560R = 1.4mA, that's still a significant part of your 2.5mA sleep consumption.

Yeah, I know, for the battery this 1mA doesn't really matter, but you can brag that you powered the Yún down by more than that that factor 80. [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-fd409b1d-bd9d-439e-a2ee-a8f1a6bc41b7/contentimage_5F00_1.png:16:16]