I recall a topic some months back on drumhead lighting using a small round smd pcb designed by grj I believe. Can’t find the thread now, but can anyone tell me what size leds these are made for? Maybe 3528, or smaller?
i downloaded the gerbers at the time, but missed any further documentation somehow! 
Rod
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Rod the led were 0603 and the resistor was 0805. Power with around 6vdc, I used 12vdc and a 1200ohm resistor for my taste. The leds were in a circuit of three pair in parallel. Work nicely with warm white leds.
@Rod Stewart posted:I recall a topic some months back on drumhead lighting using a small round smd pcb designed by grj I believe. Can’t find the thread now, but can anyone tell me what size leds these are made for? Maybe 3528, or smaller?
i downloaded the gerbers at the time, but missed any further documentation somehow!
Attached are the Gerbers and the DIPTRACE design files. There were no major "documentation" releases, just connect power and pick the resistor for the desired intensity. 
Great thanks Ted and John. Giot it now.
Rod
@Rod Stewart posted:I recall a topic some months back on drumhead lighting using a small round smd pcb designed by grj I believe. Can’t find the thread now,
....
I believe this is the OGR thread. There are tidbits of practical info to be gleaned from that discussion.
Rod with the DIPTRACE files, you can easily change the footprint of the LED's to any size you like.
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