Espresso for Geeks is a project to create a generic Open Source set of mods for semi-automatic espresso machines. These are the basic (but often high quality) machines that are composed of a single boiler, basic steam wand, vibratory pump, solenoid valve and a sometimes adjustable over-pressure valve (OPV). The mods described here are designed to enhance the features, performance and automation of these espresso machines. This project also aims to be a forum fostering a community of espresso geeks and makers where new techniques, ideas and theories are tested, developed, discussed and implemented. This is only possible when the code, schematics, enclosure designs and PCB designs are released under fully permissive Open Source licenses, so they are.
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.