Electronics

ezPLA - C64 PLA replacement PCB

2 weeks ago By ezcontents

A while back I created a prototype board for the PLA replacement chip for C64. It was time to make a PCB out of it. In this blog post I will describe the steps that I did to design the PCB using KiCad and manufacture it using PCBWay prototype service.

Read more about ezPLA - C64 PLA replacement PCB

Teensy 4.1 PSRAM upgrade

1 month ago By ezcontents

Teensy 4.1 can be upgraded with up to 16 Megabytes of PSRAM. Here I describe the process.

Read more about Teensy 4.1 PSRAM upgrade

1602 LCD module with I2C adapter

2 months ago By ezcontents

This 1602 display module includes an IIC adapter based on PCF8574 chip. This should work nicely on microcontrollers with a limited number of GPIO pins.

Read more about 1602 LCD module with I2C adapter

Boost Arduino Nano USB 5V to 12V

2 months ago By ezcontents

Using this DC Boost converter (XL6009E1) you can easily convert 5V from the Arduino Nano USB to 12V. This setup should come in handy to power the SID chip.

Read more about Boost Arduino Nano USB 5V to 12V

Atari 800XL PCB - soldering and troubleshooting

6 months ago By ezcontents

After collecting all the components needed for the Atari board it was finally time to solder them. But what are the chances that the project would work on first attempt? In my case it didn't and I will describe here my process of troubleshooting.

Read more about Atari 800XL PCB - soldering and troubleshooting

LS055R1SX04 2K LCD Screen with controller board

9 months ago By ezcontents

This SX04 2K LCD with controller board screen just got delivered. I will try to connect it to an HDMI output. RPi maybe? Believe it or not I have actually made an unboxing video.

Read more about LS055R1SX04 2K LCD Screen with controller board

BBC Micro:bit breadboard projects

1 year ago By ezcontents

This is the micro:bit. It is a pocket sized computer system with motion detection, a built-in compass and Bluetooth technology that can be used to learn programming and electronics.

Read more about BBC Micro:bit breadboard projects

Commodore 64 custom PLA chip test

1 year ago By ezcontents

A while back I also made a prototype for C64 PLA chip replacement, but I never did any further tests and completed the project. I thought that it was time to do some more tests on the chip. But will it pass the tests? Let's find out...

Read more about Commodore 64 custom PLA chip test

4164 Dynamic RAM with Arduino

1 year ago By ezcontents

The 4164 DRAM memory chips can be found inside old 8-bit computers like Atari 800XL and Commodore 64. In this blog I will try to explain how they work by going through the datasheet and then building a breadboard with an Arduino to look at the operation in more detail. You can also watch this on youtube.

4164
arduino

Read more about 4164 Dynamic RAM with Arduino

Atari 800XL PCB remake

1 year ago By ezcontents

As a child I have owned an Atari 800XL. This 8-bit computer always had a special place in my heart. After almost 35 years I have decided to dive a bit deeper into the circuitry of this now called retro computer. What better way to start than to remake the PCB from scratch.

Read more about Atari 800XL PCB remake

Subscribe to Electronics