It’s hard to believe that MOS Technology released their 6502 8-bit microcontroller back in 1975. Even more surprising, is that 44 years later they are still being manufactured in one form or another (65XX) by Western Design Center, including PLCC and QFP variants — although it’s mostly garage engineers and hobbyists that continue to use them. One of those hobbyists, NotArtyom, took advantage of WDC’s PLCC and QFP 6502 form factors and was able to build a watch around them.
NotArtyom’s watch design is pretty straightforward, and uses a PPLC 6502 (32K of SRAM/16K of ROM) for the main microcontroller, along with a PPLC 6522 to handle I/O options. The chips are housed on a custom PCB with a Nokia 5110 LCD and four programmable buttons to navigate through the watch’s functions.
Eink, E-paper, Think Ink – Collin shares six segments pondering the unusual low-power display technology that somehow still seems a bit sci-fi – http://adafruit.com/thinkink
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.