So how long will a 550mAh AAA NiMH run a STM32F405 (Cerb processor) which constantly reads a MPU9150 using I2C and sends the current time over UART using a RF Pipe with sucks a constant 17ma as it has a 100% duty cycle in receive mode…
Single 1.2v NiMH 550mAh AAA running at 168mhz = 3 hours runtime
Single 1.2v NiMH 550mAh AAA running at 84mhz = 4 hours runtime
Two 1.2v NiMH 2000mAh AA running at 168mhz > 24 hours runtime
Points to note
RF module has a 100% receive duty cycle so uses 17ma constantly.
TX is 14ma when sending data each second.
Mini Juice is not overly efficient using 1.2v > 3.3v …
Will be interesting to see how Microbe.Net fairs with a single AAA