can we run Chimuino on battery? - Githubissues

samthiriot / windchime

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can we run Chimuino on battery? #1

Open samthiriot opened 6 years ago

samthiriot commented 6 years ago

Analyze energy consumption and the possibility not to have to plug the chime on an outlet.

samthiriot commented 6 years ago

See source https://openhomeautomation.net/arduino-battery

samthiriot commented 6 years ago

see https://engineersportal.com/blog/2018/3/21/arduino-internet-of-things-part-2-lowering-the-power-consumption-of-the-atmega328p-breadboard-arduino-with-the-hm-10-bluetooth-module

samthiriot commented 6 years ago

see also http://www.home-automation-community.com/arduino-low-power-how-to-run-atmega328p-for-a-year-on-coin-cell-battery/

samthiriot commented 6 years ago

see for the stepper engine: https://forum.arduino.cc/index.php?topic=393500.0

samthiriot commented 6 years ago

for the RTC clock:

base consumption is around 300uA
should stop square wave and other useless features at startup
see http://www.picaxeforum.co.uk/showthread.php?29952-Power-consumption-of-DS3231-AT24C32-board

samthiriot commented 5 years ago

seems like the best efficiency with stepper engines is reached by accelerating gradually instead of defining the top speed immediately

samthiriot commented 5 years ago

there is the possibility to run the stepper engine with a wave signal, which means one coil at a time instead of two - better efficiency when the load is to high enough to require the two coils

samthiriot commented 5 years ago

tension: the stepper requires 5V to move, the regulator is absorbing a bit less than 1V, the battery is loosing tension with time => to run the stepper out of a battery pack, the battery pack should be around 7V (?)

samthiriot commented 5 years ago

the 28byj-48 stepper is rated about 70 Ohm per coil. So at 5V or 6V its consumption is about 70mAh to 85mAh per coil.

samthiriot commented 5 years ago

On the arduino side:

lower the frequency of the chip
put the arduino on sleep when not used See for low poser:
http://www.gammon.com.au/power

samthiriot commented 5 years ago

consumption of a nano: https://arduino.stackexchange.com/questions/926/what-is-the-maximum-power-consumption-of-the-arduino-nano-3-0

there are low power versions of arduino, like: http://www.rocketscream.com/blog/product/mini-ultra-8-mhz-arduino-compatible/

samthiriot commented 5 years ago

wake up the arduino in case of a change in light : https://engineersportal.com/blog/2018/3/24/arduino-internet-of-things-part-3-external-interrupts-using-a-motion-sensor-hc-sr501

samthiriot commented 5 years ago

Wakeup on bluetooth communication: https://forum.arduino.cc/index.php?topic=107665.0

samthiriot commented 5 years ago

solar powered?

https://www.gammon.com.au/forum/?id=12821

samthiriot commented 5 years ago

see http://heliosoph.mit-links.info/arduino-powered-by-capacitor-start/

samthiriot commented 5 years ago

https://www.gammon.com.au/forum/?id=12821

samthiriot commented 5 years ago

https://www.gammon.com.au/power