opposing leds driver

[Kipper4]

I dont know why I havent tried this before

[Kipper4]

And should you so wish to offset the timing a little.

needs more work but the basics are there.

[Kipper4]

Untested with the led driver but I see no reason it wouldnt work

[EBK]

You could also try something like this:

https://www.diystompboxes.com/smfforum/index.php?topic=118278.msg1159040#msg1159040

[Kipper4]

Nice one Erik thanks.

[diffeq]

And should you so wish to offset the timing a little.

needs more work but the basics are there.

My take, for 0-5V control voltage:

One volt per Vin equals 1mA of current through LED. With offset pot on inverting part.

[PRR]

Long-tail differential amplifier with large emitter resistors.