PART FINDER FRIDAY – I/O Expanders and MUXes. If you need MORE analog inputs to your micro, you can’t really go wrong with the classics, the 4066 (8:1) and 4067 (16:1). For $1 you can multiplex 16 new channels into one A/D input! The 74′ series versions can run on 2-6V and have ~60 ohms of resistance in the internal FET switch. They are a little noisy but if you are using a microcontroller just let the mux settle for a few milliseconds and toss the first reading and you should be golden!
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, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, 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.
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