My dynamometer is done, and now I want to make it work on batteries, without setting it on fire !
So, I am using:
-A LoadCell that have a maximum excitation voltage of 12VDC and an excitation voltage of 5VDC
-An LCD I²C Screen that works on 5 VDC
-An HX711 that works between 2,6 and 5,5 VDC and 100 µa of digital supply current
-An SD card module that works between 4,5 and 5,5 VDC and 0,2 to 200 mA.
-An Arduino Uno Rev 3
-A push buttton
I want my Arduino to work one hour a week, so, I plan to use a rechargeable battery, with a slot for battery (cylinder type), which voltage and amp should I select for my application ?
Thanks for your answers.