Hello everyone! First post here so bare with me if i go the thread wrong.
It's been a month since i started a color organ project based on great scott's video on youtube which uses an arduino. I ordered all the parts from ebay and when i built the circuit on a breadboard i figured out that the msgeq7 ic , which was used to seperate the audio into bands , was a fake! My time schedule does not allow me to order another one so i thought i would use simple passive R-C filters. I built a 2nd order high pass(1st order wasnt "accurate" enough) and a 1st order low pass. Now, the analog input on the arduino reads values of about 1~8 for the high frequencies and 2~80 for the low freq. My question is... what's a good alternative to filter the audio without having so much attenuation given that i only have npn and a couple pnp transistor, no inductors and a tl082 opamp which i cant really use because i dont know how to get negative Voltage for the power rails.
Any help would be appreciated, Thanks in advance
It's been a month since i started a color organ project based on great scott's video on youtube which uses an arduino. I ordered all the parts from ebay and when i built the circuit on a breadboard i figured out that the msgeq7 ic , which was used to seperate the audio into bands , was a fake! My time schedule does not allow me to order another one so i thought i would use simple passive R-C filters. I built a 2nd order high pass(1st order wasnt "accurate" enough) and a 1st order low pass. Now, the analog input on the arduino reads values of about 1~8 for the high frequencies and 2~80 for the low freq. My question is... what's a good alternative to filter the audio without having so much attenuation given that i only have npn and a couple pnp transistor, no inductors and a tl082 opamp which i cant really use because i dont know how to get negative Voltage for the power rails.
Any help would be appreciated, Thanks in advance