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Need help with TLC5947
Moderators: adafruit_support_bill, adafruit

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Re: Need help with TLC5947

by Tchouala on Tue Jan 22, 2019 7:41 am

It is not on the breadboard.
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Re: Need help with TLC5947

by Tchouala on Tue Jan 22, 2019 7:42 am

the soldering
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Re: Need help with TLC5947

by Tchouala on Tue Jan 22, 2019 7:43 am

the other side
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Re: Need help with TLC5947

by Tchouala on Tue Jan 22, 2019 7:44 am

again
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Re: Need help with TLC5947

by adafruit_support_bill on Tue Jan 22, 2019 8:22 am

Looks like the solder on the LAT and OE pins has not flowed onto the solder pad. Several of the other solder joints also looks like probable 'cold' joints.

This guide has some tips on identifying and fixing common soldering problems: http://learn.adafruit.com/adafruit-guid ... n-problems

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Re: Need help with TLC5947

by Tchouala on Tue Jan 22, 2019 6:36 pm

Hi i did all the soldering again .
the Lat and the OE are no more joind.

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Re: Need help with TLC5947

by adafruit_support_bill on Tue Jan 22, 2019 6:44 pm

please post a photo of your repaired solder joints. Also a photo showing your connections - without the second header shorting out the pins.

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Re: Need help with TLC5947

by Tchouala on Tue Jan 22, 2019 8:44 pm

Please tell me how to get trough this problem.
If i connect every thing and send the test programm , my programme ist not going from the arduino in to the TLC5947.
If i empty the loop LED goes on but no color changes , if i load the test programm LED turns off .
What ist the problem?

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Re: Need help with TLC5947

by adafruit_support_bill on Tue Jan 22, 2019 10:53 pm

please post a photo of your repaired solder joints. Also a photo showing your connections - without the second header shorting out the pins.

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Re: Need help with TLC5947

by Tchouala on Mon Jan 28, 2019 12:13 am

Hi once more please tell me wich pin is the IREF pin on the adafruits board tlc5947
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Re: Need help with TLC5947

by franklin97355 on Mon Jan 28, 2019 12:31 am

IREF is pin 31 on the chip itself but is not brought out to an accessible pin on the board.

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Re: Need help with TLC5947

by Tchouala on Mon Jan 28, 2019 12:48 am

Hi again ,
i have to connect a potentionmeter on the TLC5947 how can i procied i have no idear . i dont even thing it will work because i cant light the LED and make dem work like inthe exemple .
i cant light the LEDat all , i have try in every way to do it but no.

If i connect verey cabel as in the exemple led turns off


if i connect just the dig4 to Din LED turns on but it doesnt do the programm test in the exemple
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Re: Need help with TLC5947

by franklin97355 on Mon Jan 28, 2019 12:59 am

We need to see clear pictures of your boards and connections. Also the code you are running and the connections to the boards.

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Re: Need help with TLC5947

by Tchouala on Mon Jan 28, 2019 4:27 am

here are some pictures.
how can i connect the Resistor at the IREF . i need that to do some measurements .
i also need to connect the potentiometer on the board please help me .
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Re: Need help with TLC5947

by Tchouala on Mon Jan 28, 2019 4:31 am

Can you please advice me another DCto DC converter step down wich has a PWM pin.

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