Joey's Electronics Projects

The PIC32 robot from my 2022 Project Goals  is finally finished! Building it was a fun way to learn about the MIPS architecture and programm...

When people on IRC have questions about Forth or I can't remember how a particular word works, it's nice to have a Forth handy to tr...

One of my 2022 Project Goals  is a PIC32-based robot which emulates a 6502. While working on the emulation, I kept having to look up details...

Though I haven't made many posts in the past two years, I have been working on projects slowly but surely. As time passes, I realize how...

A little over a year ago, I bought a new Casio FX-9750GIII graphing calculator. It really appealed to me for several reasons so I decided ...

After a few months of progress, a demo version of this project is on my website . You can try out all the functionality of the calculator in...

Despite the decision  in 2019 to finish up some lingering projects before beginning anything new, I did start working on a new calculator pr...

The last six months or so, I have been working on a project to compare the performance of C, assembly, and Forth on the 65C02. This week I f...

This is another project on the list of open projects from a few months ago. The goal is to improve 6502 assembly code used in the firmw...

 Yesterday I finished setting up a website to host my 6502 calculator emulator:  www.calc6502.com . So far, it's just running EhBASIC...

In my post about Open Projects , I mentioned this project, and now I'm officially announcing it. This is a JavaScript based emulator...

After starting on my 7400 Calculator project, I thought about how many projects I have open at the moment. Like a lot of hobbyists, I seem...

Most of the microcontrollers and processors I have looked into using have been for my calculator projects. That's one of the main rea...

12345.6789 + 9999.99999 packed BCD on 8051 A few years ago I decided to revisit the microcontroller comparison I had done to see how m...

In preparation for the 6502-based calculator I am planning on building, I started thinking about the best way to do BCD multiplication. On...

For the 6502 graphing calculator I started working on two years ago I wanted to use an ATF1508 CPLD to do the address decoding. In another...

After about two years away from electronics, I have some time for my projects now that I am almost finished with my degree. Lately, I...

Since my plan to make a wireless breadboard did not work out, I decided to use the MCP23S17 shift registers I bought for it to make somethi...

One of the last things I want to make progress on before Makevention in a few weeks is a graphing calculator I have been planning for quite...