Delivery time: Due to the worldwide shortage of chips, this product is not expected to be available again before second half of 2023.
Possible alternative products can be found below.</em >
The Teensy is a breadboard-friendly development board with loads of features in a, well, teensy package. The Teensy brings a 32 bit ARM Cortex microprocessor into the mix so you can do some serious number crunching. You can program for the Teensy in your favorite program editor using C or you can install the Teensyduino add-on for the Arduino IDE and write Arduino sketches for Teensy.
More information is available on the websites of Sparkfun and PJRC.