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9 years, 7 months ago.
nRF51822-mKIT power consumption of the board itself
NORDIC nRF51822-mKIT consumed at least 19mA power (the board itself) with external 3V battery. The current measurement by th pin header shows less then 0,5 mA for the nRF51822 chip itself. Disconnecting from power and interface MCU switch off has no influence on power consumption. So a real test with coin-cell battery makes no sense. Can anybody check this?
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9 years, 7 months ago.
Did you read the PS that says to cut track for current consumption?
Yes, I cut the solderbridge SB8 and measure the current at P1 pin1 and p2. But the current consumption of the chip is not the problem. I modified the BLE_UART example and used an temperature sensor and all worked fine. Then I disconected the board from PC and tested with battey coin. Then I was astonished - this worked only for 20 minutes, the most time the program was in advertising mode only. That was the reason to check the power consumption. I repeated the measurement with blinky example (LED off 4 sec, LED on 1 sec) an got the same result. Always a current consumption overall more then 20mA.
posted by 26 Sep 2014