Whoa! Steve Marple has created Calunium, an Arduino clone built around the ATMega644/1284 chip. In addition to the larger memory and I/O that the ‘1284 provides, he’s also integrated a DS1307 real-time clock and coin cell on-board, and broken out the footprint for an LM61 temp sensor. This is a really interesting project, and a nice looking one, too!
Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.