*Solved*. STEM LEDs balancing on two channel receiver

[dandnl333]

I tried to add one strand of red leds and one strand of green leds to the STEM two channel receiver, but no joy. Only one of the strands will light. I can use two of the same color, but cannot mix them. If I have the green plugged in and add the red, the green dim to almost nothing. I am guessing that the red have less resistance. Anyone have a work around for this? I wanted red on port, green on starboard.
Thanks!

Dan

 

[Piotrsko]

100 ohm 1/2 watt resistor on the return end of the red string? Series them with the green string first?

 

[dandnl333]

Piotrsko, I checked current flow on red vs green. One strand of red runs at 138ma. Green runs at 75ma. Running two reds, they pull around 30ma. Running two greens the each run at 40ma. I first tried a 60 ohm resistor in series with the red, but the reds appeared dim (human eye sees green way better). I tried different values of R and found that a mere 3 ohms gives me a good balance (it does dim the greens a little, but gets reds brighter, and balanced.

 

[Piotrsko]

Ah. But you got the way to fix it. The ten ohms was a spitball using swag engineering at 28000 ft using airline wifi, Between Canada and Boston and no current flow data.