AVR Power Saving Modes

Submitted by Laen on Thu, 2008-10-30 15:12

AVR chips have a couple of built-in ways to reduce power usage: "sleep" modes, and "Power Reduction Modes". Sleep modes stop the running program (which is the biggest power hog), waiting for an interrupt to wake it up, while Power Reduction Modes can be used any time (including while the processor is asleep).


Submitted by WardCunningham on Mon, 2008-10-27 23:23

I found the SECODER that I spoke about last meeting. It was in the bottom of the wrong junk box with old antenna equipment, not old telephone equipment. My mechanically inclined friends helped me get it working again.


I've written a web page describing my original application, Dial-a-Door.

Benito with i2c and USB midi

Submitted by ax on Fri, 2008-10-17 16:58

I grabbed two of those 36 key keypad boards from Paul at the last dork bot, he grabbed them out of those POS boxes [with the big LCDs that he has posted info about]. I wanted to get them working with the Benito and also wanted work with i2c a little [as I have a bunch of these 8bit i2c i/o expanders]. The keypad has 20 i/o pins so the Benito cannot use it directly anyways.. though 12 bits of shift registering would probably be better... but either way, I wanted to use what I had + i2c.