DIYstompboxes.com

DIY Stompboxes => Building your own stompbox => Topic started by: Bigshredder on December 08, 2021, 03:34:46 PM

Title: Can’t get led to work
Post by: Bigshredder on December 08, 2021, 03:34:46 PM
Hi,

I have built around 15 pedals the last 2-3 years and I just built the zirconium compressor. The build documents was really bad and lacking alot. I bought a kit from musikding and every component was just thrown in random in a bag. So I just finished building it and it sounds amazing but the led won't work. I feel really stupid but I have tried different leds in case the one from the kit was broken. I have tried the long leg through the square hole and vice vers. What have I missed? Probably something silly, but since the build docs was really bad there is no guidance on how to build it.
The leds are cut of in this pic so I can try different positions.
(https://i.postimg.cc/sMb5YvJW/CBB4-DB86-F0-EC-4-D28-8919-F965-F5-D79686.jpg) (https://postimg.cc/sMb5YvJW)
Title: Re: Can’t get led to work
Post by: iainpunk on December 08, 2021, 03:46:59 PM
do you have a correct series resistor value?
if you have too high of a value, it won't really light up, if its to small a value, the LED's will burn out quite fast.

cheers
Title: Re: Can’t get led to work
Post by: FiveseveN on December 08, 2021, 04:30:32 PM
On the auxiliary board there is a reference to a "CLR" that isn't populated. ;) That's probably for the resistor Iain is talking about.
Title: Re: Can’t get led to work
Post by: ElectricDruid on December 08, 2021, 04:57:43 PM
LED back to front is another likely possibility. I know about this and always check and still get it wrong, somehow, about one time in three. >:(

The good news is is doesn't sound too serious. A bit of fiddling about should have this fixed shortly. :)

HTH,
Tom
Title: Re: Can’t get led to work
Post by: antonis on December 08, 2021, 05:15:00 PM
What FiveseveN said.. :icon_wink:

(https://i.imgur.com/Rt3Y9pV.jpg)
Title: Re: Can’t get led to work
Post by: idy on December 08, 2021, 05:19:05 PM
And for heaven's sake touch up the solder on that footswitch. Solder is cheap. We want nice connections, no daylight, fill those holes!
Title: Re: Can’t get led to work
Post by: PRR on December 08, 2021, 10:53:49 PM
Quote from: ElectricDruid on December 08, 2021, 04:57:43 PM
LED back to front is another likely possibility.

Quote from: Bigshredder on December 08, 2021, 03:34:46 PM.. have tried the long leg through the square hole and vice vers.  ...
Title: Re: Can’t get led to work
Post by: Bigshredder on December 09, 2021, 12:39:42 AM
Quote from: idy on December 08, 2021, 05:19:05 PM
And for heaven's sake touch up the solder on that footswitch. Solder is cheap. We want nice connections, no daylight, fill those holes!

Haha ok :) will do.
Title: Re: Can’t get led to work
Post by: Bigshredder on December 09, 2021, 12:41:46 AM
Quote from: FiveseveN on December 08, 2021, 04:30:32 PM
On the auxiliary board there is a reference to a "CLR" that isn't populated. ;) That's probably for the resistor Iain is talking about.

This was my guess as well but the documents said nothing about putting a resistor there so I thought that the resistor was already in use at the main pcb :)

Thanks:)
Title: Re: Can’t get led to work
Post by: Bigshredder on December 09, 2021, 01:30:34 AM
It works now :)
Thanks for all the help guys ❤️😊
Title: Re: Can’t get led to work
Post by: antonis on December 09, 2021, 05:15:37 AM
Quote from: Bigshredder on December 09, 2021, 01:30:34 AM
It works now :)

In some mysterious mojo way or what..?? :icon_mrgreen: