RN-42-HID Bluetooth Breakout PCB Design Assistance


i new pcb design , wanted try out. created simple breakout board rn-42-hid (former) roving networks. have recent datasheet, gerber files, , pictures of schematic , board design included. can't thing work. led's don't light up, doesn't respond serial commands, nothing.

i have checked , rechecked, far can tell not missing anything. here see issues pcb designed?

this logic problem, have isolate error is. software error, hardware error or what? since hardware can easier test definitely, check hardware first. first thing check make sure ground , power connections working properly. it's quickest , easiest thing check first. after have ensured working, using multimeter work backwards led device.

1) check continuity between ground of r2 , ground pin. if there not continuity, problem obvious.
2) check resistance between  across resistor (measuring led ground pin). rule out mislabeled resistor. check mislabeled resistors, happen time time.
3) check voltage across led (put test leads on either side of led). let know if current flowing across led. if value fraction of volt or zero, either device can't supply enough current, voltage low in combination resistor or led dead.
4) check voltages pin of bluetooth device ground pin. if device can't supply enough current, read low. if there sort of error device, value read 0 or close (some circuits can feed few hundred millivolts or less outputs when turned off).



i noticed datasheet has rather cryptic comment i/o pins being capable of 1ua way low drive led. though reference schematic shows leds connected specific pins. not sure right. helps on way go.



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