Programming Electronics with the Commodore User Port #VintageComputing #Commodore #C64

Via Retro Game Coders:

In the 1980s, instead of Arduino and Raspberry Pi, there were the 8-bit micros such as the Vic 20, the Commodore 64, the BBC, and the Apple II. A generation of electronics and robotics inventors got their start with these machines.

With my generation, things were a little different. Our computers were sold as “easy to use”, and were paid for by our parents. That meant a lot of kids, including me, didn’t dare wire anything up to our computers even though many were meant to be played with in this way.

That said, a lot of people did use their computers this way, doing everything from hacking the telephone system to rigging up smart homes before “the internet of things” had an internet to connect to.

Like the Arduino and Raspberry Pi, the Commodore series of computers have a “general purpose input and output” expansion. This means there are several pins that can be written to at address 56577 (using POKE) or read (using PEEK).

The article goes into depth on blinking an LED vis the user port, programmed in BASIC.

See the video below and the details in the guide here.

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, 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.

Join 35,000+ makers on Adafruit’s Discord channels and be part of the community!

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.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more

CircuitPython – The easiest way to program microcontrollers –

Maker Business — Moving manufacturing out of China

Wearables — Take control of your LED sequins

Electronics — Current limiting!

Python for Microcontrollers — Python on Microcontrollers Newsletter: CircuitPython Day Friday, Python Still #1 and much more! #CircuitPython @micropython @ThePSF @Raspberry_Pi

Adafruit IoT Monthly — Detect Radiation, ML Baby Monitor, and more!

Microsoft MakeCode — MakeCode Thank You!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — JP’s Product Pick of the Week — 4pm Eastern TODAY! 8/16/22 @adafruit @johnedgarpark #adafruit #newproductpick

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at !

No Comments

No comments yet.

Sorry, the comment form is closed at this time.