Hi all, I am puzzling through making a rather thorough LFO to affect various parameters on my filtery delayey SK5. The LDRs will be able to be switched in to take the place of the potentiometers that control a filter and a Delay (and possibly a second LFO), or if i can manage it, work with the pots to give depth control. The issues im facing are as follows:
1) LDRs dont give a linear response to decrease in light intensity (
http://www.kitronik.co.uk/resources/understanding-electronics/how-a-ldr-light-dependent-resistor-works)
2) The pots in question are in range of 10-100k and LDRs are usually 1-2m. I could put resistors in parallel with the LDRs to get the overall resistance range down, but again this would not give a linear response.
Would it be possible to cleverly pit these non-linear responses against each other to sort of cancel each other into something more linearish?! or will it result in devilish double tapered response?!
anyone SHED ANY LIGHT (groan) on this quandary?
Oh and this is a likely candidate for the LFO I'll build... (using the output to as a CV in for the res of my Q&D filter and everything else with vatrols off the LED (if, that is, the LED light is influenced by the shape knob, it sort of looks like it might not be)) :
http://www.casperelectronics.com/images/finishedpieces/speak-n-spell/Speak-n-Xbending/LFO%20schematic2.jpg