Randofo on Instructables shared this guide to making a simple two channel audio mixer:
This simple passive DIY stereo audio mixer demonstrates resistors in use. When I say stereo, I am not talking about your home entertainment signal, but an audio track with a separate left and right channel.
This mixer will allow us to combine two stereo tracks into one single track, while adjusting the volume of both tracks individually and together.
We will also go over techniques for mounting electronics in an enclosure. Since this is primarily a lesson in electronics and not building enclosures, it is not necessary that you mount your electronics in exactly the same way I do. However, I recommend trying to follow along.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
Have an amazing project to share? The Electronics Show and Tell with Google Hangouts On-Air is every Wednesday at 7:30pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.
