PI Model B - LED not lighting - Raspberry Pi Forums

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hi, have pi model b , trying run basic test having led connected directly 3.3v. have attached setup.

ran wiringpi pintest , seems fine.

please make sure removed , press enter key continue,
or control-c abort...

main 8 gpio pins 0: 7: ok
5 spi pins 10:14: ok
serial pins 15:16: ok
i2c pins 8: 9: ok

tried connect pins using pi cobbler, different set of wires, different led, , different resistor.

ideas help.

setup is:
3.3v -> long end of led -> resistor -> ground

the resolution of picture isn't quite high enough see details.
however, pi's pwr led lit. being so, irrespective of software, there should 3v3 between pin 1 , pin 6.

possible reasons led not lighting:
led broken, or leads other way round. try turning round.
resistor high in value. less 2k should make glow, don't go below 200r
wires aren't making contact on breadboard.


raspberrypi



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