JP1 made circuit operate at 3.6V instead of 3.3V

PaxInstruments / t400-electronics

Electronics for the Pax Instruments T400 temperature datalogger

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JP1 made circuit operate at 3.6V instead of 3.3V #117

Closed samchoy88 closed 9 years ago

samchoy88 commented 9 years ago

I found the circuit operate at 3.6V instead of 3.3V and suspect the power circuit has some problem. Finally found the short circut of JP1 not only made the circuit always ON, it also inject 5V to MCU I/O pin (PWR_ONOFF) and made the whole circuit voltage rise to 3.6V

samchoy88 commented 9 years ago

Problem solved by adding 10K resistor after the JP1

charlespax commented 9 years ago

Cool. Let's keep that resistor on the component side and have it populated. Maybe we unpopulated it later, but this is a good default for now.

charlespax commented 9 years ago

@samchoy88 is this still an issue or is it addressed in Electronics version 0.10?

samchoy88 commented 9 years ago

addressed in Rev 0.10

charlespax commented 9 years ago

Cool. Closing issue.