On Saturday, August 13, 2022 we will be working on the Adafruit Customer Support Forums. If you visit over the weekend and things are not complete yet, please check back later, https://adafruit.com/forumupdates
Keep your microcontroller or real-time-clock tickin’ with a a fancy timing crystal. This 32.768 KHz model comes in a cylindrical style standard package and is breadboard friendly and easy to use with any microcontroller, RTC or device that requires an external crystal.
The crystal has 12.5pF load capacitance requirements and is ideal for use when you have a real-time clock or other ultra-power chip.
To use, connect the two pins to XTAL-in and XTAL-out on your circuit (the package is symmetric so use whichever pin). Check your microcontroller datasheet in case you also need a 1 Megaohm resistor or any other components, usually 32.768KHz crystals do not require capacitors.
Keep your microcontroller tickin’ with a fancy timing crystal. These models come in a HC49/US ‘short style’ standard package and are breadboard friendly and easy to use with any microcontroller or device that requires an external crystal. We even include two 20pF capacitors!
The crystal has 30PPM tolerance, 50PPM stability so it’s good even for high precision needs (USB timing, long-term time-keeping, RF/PLL/VCO driving).
To use, connect the two pins to XTAL-in and XTAL-out on your circuit (the package is symmetric so use whichever pin) and one capacitor each from a crystal pin to ground. Check your microcontroller datasheet in case you also need a 1 Megaohm resistor or any other components.
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.