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headers already sent by (output started at [ROOT]/includes/functions.php:3916) [phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4791: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3916) [phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4792: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3916) [phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4793: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3916) AutoQuad Forum • View topic - N4 expansion boards for BLDC
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AutoQuad :: Autonomous Multi Rotor Vehicle Controller
I have the N4 assembled but no LED lights, neither the LED for power nor the LED for pairing. The M4 is powered correctly. I have the BT modules completely soldered and not like the picture shows only partially.
The connections soldered in the photo is the ones used and some corner pins to keep the module in place. Remaining ones are not connected, so it doesnt harm anything to solder them, but its not needed either.
If so it might just be a problem with the LEDs themselves. You should see pulses of 3.3V on R14 (PWR Led blinks) when the module is powered. Once the module is paired AND connected you should get steady 3.3V on R13. (Pair LED is solid)
Check also for shorts on pin 31 and 32 (The LED pins) on the BT module. Add flux and reflow those 2 pins. Things are tight around there with the UART connector so not the easiest soldering...