Thanks to Eli for sending in this great DIY project! Read more about it here.
MonkeyJam will use the FRDM-K20D50 board (which has a Cortex M4 core with DSP instructions) along with the FRDM-JAM shield so you can make your very own guitar /bass stomp box. The end result will be a functional DSP system that will allow you to do high quality amplifier simulation and effects.
The FRDM-JAM does not limit you to DSP on musical instruments! There are 3.5mm stereo jacks to DSP filtering any type of audio signal. You could even use the USB interface to create a USB-MIDI Synthesizer! Lastly, no need to bring the house down….. a headphone amplifier circuit is provided so you can jam out without bothering the neighbors.
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.