madbeanpedals::forum

Projects => General Questions => Topic started by: benatx on June 08, 2025, 09:50:44 PM

Title: Question on BoomBoom/Brassmaster PCB
Post by: benatx on June 08, 2025, 09:50:44 PM
First time I've used a MadBean PCB and have a question on the LED pad.  I'm not using a separate bypass board (SSBP, etc).  Maybe I'm missing it but don't see an LED attachment referenced on the schematic.

The LED pad appears to provide a voltage source for the LED, with the 9v board voltage dropped across an R820 resistor.  So I'll still want a 1k+ resistor for the LED. 

Is this correct?
Title: Re: Question on BoomBoom/Brassmaster PCB
Post by: madbean on June 09, 2025, 03:54:57 AM
Quote from: benatx on June 08, 2025, 09:50:44 PMFirst time I've used a MadBean PCB and have a question on the LED pad.  I'm not using a separate bypass board (SSBP, etc).  Maybe I'm missing it but don't see an LED attachment referenced on the schematic.

The LED pad appears to provide a voltage source for the LED, with the 9v board voltage dropped across an R820 resistor.  So I'll still want a 1k+ resistor for the LED. 

Is this correct?

The LED pad is connected directly to the 9v source. So, if you are not using any bypass board you'll need to hard wire a CLR before your actual LED connects to the bypass switch.