The sleep tag has no wiki summary.
3
votes
4answers
92 views
What happens to other component's power consumption, when uC is switched to low-power mode
Currently, I am using a uC (Atmel ATtiny85-PU20), which will eventually run battery powered, and I am trying to reduce power consumption of entire circuit to maximise time between battery changes. ...
10
votes
3answers
295 views
Microcontroller Sleep Race Condition
Given a microcontroller that is running the following code:
...
2
votes
1answer
153 views
Raspberry Pi minimum sleep time
I managed to connect an old PS/2 keyboard to the GPIO pins of my Raspberry Pi. I do get correct data from the keyboard which means when I press 'A' on the keyboard I get 'A' in my C code. The big ...
5
votes
2answers
125 views
Datasheet term for transistor power consumption when OFF?
I'm trying to find a transistor that can power up to 1A (1000mA) on an animated LED strip lighting circuit. From this thread I found the BC517 darlington:
Choosing the right transistor for a ...
5
votes
2answers
229 views
Need help understanding Ultra Low Power Wakeup on PIC16F887
I am trying to implement the "Ultra Low Power Wake Up" feature on a small PIC project. The idea is the chip will go to sleep, and then be woken up in the future by the ULPWU interrupt.
The idea ...
5
votes
1answer
576 views
How is this Pushbutton Debounce code?
I am monitoring a pushbutton with a microcontroller where I am trying to take care of four things together:
50-msec debounce upon push-begin and 25-msec debounce upon push-release
identify a ...
3
votes
2answers
2k views
How to make XBee sleep?
Arduino Fio with XBee radio.
I have read the XBee manual (pg. 24-25), trying to figure out how to put it to sleep, but what I tried did not work. Then I found an example sketch using XBee sleeping, ...
3
votes
3answers
3k views
Best pattern for WFI (wait-for-interrupt) on Cortex (ARM) microcontrolers
I'm looking into developing battery-powered software using the EFM Gekko controllers (http://energymicro.com/) and would like the controller to be asleep whenever there's nothing useful for it to be ...
3
votes
1answer
603 views
AVR (at90usb1286) sleep and USB
I am using an AVR at90usb1286-based Teensy++ 2.0 to periodically read data from a few sensors. In its final form, my project will act based on the sensor inputs. For now, I log the results to the USB ...
2
votes
1answer
307 views
What quiescent current draw of my circuit would be acceptable for a 100mAh battery?
The microcontroller and several sensors of my circuit draw 10µA in sleep mode. I am using a 100mAh lithium polymer battery. Is this quiescent current acceptable? Should I install a physical switch to ...
4
votes
1answer
320 views
ArduinoBT UART Communications
Is there any way to monitor what is being sent to the WT-11 module via UART?
I'm trying to implement deep sleep on the WT-11 and can run the iWRAP "TEST DEEPSLEEP" command successfully but the deep ...
6
votes
2answers
1k views
Bluetooth power saving mode for ArduinoBT
I'm trying to get my ArduinoBT to be a bit more power friendly, I have it running in a sensor network and it is constantly drawing power. I want to be able to turn off or put the Bluetooth module to ...
16
votes
3answers
4k views
Low Battery Indicator
I'm looking to make a battery life indicator that I can use in conjunction with a micro-controller. I'm hoping that I can then read the current battery life remaining and increasingly put the ...
8
votes
3answers
4k views
