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post #7 '50uA quiescent current in Standby'
As this is a nRf52, Just stumbled across this using Low Level PPI:
'Hardware capacitive sense on two pins'
search above string inside:
According to the datasheet of the CAP1188 chip: "50uA quiescent current in Standby (1 sensor input monitored)". I will investigate more, if i find that the battery drains too fast.
But at least the cap1188 can send an interrupt, so that Espruino don't have to check the touch values continuously.
I definitely can recommend the cap1188! At first I implemented the remote with the touch pins of an ESP32, and that did not work very reliably