picaxe to LM386 LDR Vol control
April 11, 2010
Hi, i am using a LM386 ic to amplify the sound of a picaxe 28x2 ic.
This is the circuit i am using http://www.hobby-hour.com/electronics/lm386-20.gif .
I can’t really hear much amplification of the sound, anyone have the same issue?
Also i was trying to swap the 10K V resistor for an LDR, so the volume would raise and lower with the influence of a LED brightness attached to a PWMOUT of the picaxe chip. I wired this circuit as i thought but it didn’t work. Does anyone know how to do this? And perhaps give me a circuit diagram?
At present the volume control of the 10K V resistor from min volume to max volume is only active over a very small amount of the 0 – 10K movement, over about 60ohms. This doesn’t feel right. Any thoughts???