Adafruit converted an earlier iteration back in December, 2016 using an ATmega1284 microcontroller. For this build:
It’s a special version of my uLisp interpreter for ARM boards, designed to run on an Adafruit ItsyBitsy M0, or an ATSAMD21E on a prototyping board, interfaced to an I2C OLED display.
The Lisp workspace is displayed on a 64×48 OLED display. This is an ideal fit, as uLisp running on an ATSAMD21 gives you a workspace of 3072 free Lisp objects (each of 8 bytes), and the 64×48 display provides 3072 pixels. I chose a low-cost monochrome I2C display. The program would also work on larger SSD1306-based OLED displays, such as the widely available 128×64 ones.
Free Lisp objects are displayed in black, and when an object is in use it is displayed in white. Periodically you see the garbage collection reclaiming used objects that can no longer be accessed.
Perhaps we’ll see a new iteration with the larger Adafruit ItsyBitsy M4 with the ATSAMD51 processor??
8-6-2021 (August 6, 2021) is the Snakiest day of the year and it’s also this year’s CircuitPython Day! The day highlights all things CircuitPython and Python on Hardware. See you there!
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.
Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.
