Kevin
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emalliab.bsky.social
Kevin
@emalliab.bsky.social
46 followers 260 following 25 posts
Music, Software, Electronics, Maker, Art, Books, Kids. Geek, dad, engineer, blogger, musician. I only follow what I think I can keep up with and mostly here to follow not post.

He/Him
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emalliab.bsky.social
Finally getting around to messing about with some 16x64 RGB LED Panels I picked up in a giveaway a while back from Limehouse Labs.

emalliab.wordpress.com/2025/11/01/h...

Bit late to the party with this one :)
Photo of an (almost) square LED panel display with green LEDs illuminated in what can be seen to be a pattern representing a stage of Conway's Game of Life.
November 1, 2025 at 9:19 PM
emalliab.bsky.social
Now with added bling! Part 4 has some simple hardware mods that add LEDs in some useful places to help debugging.

emalliab.wordpress.com/2025/10/05/t...

#TD4
Photo of a cheap TD4 kit with some added LEDS. There are two 6-LED modules added on top of the A and B register chips, and four additional individual LEDs soldered onto the underside of the board just poking out on the right, one for each row of ROM instruction DIP switches. Some of each of the LEDs are illuminated along with the existing LEDs for the OUTPUT register that are built into the original board.
October 5, 2025 at 10:51 AM
emalliab.bsky.social
It works!

Details here: emalliab.wordpress.com/2025/09/28/t...

#TD4
Photo of a fully populated TD4 PCB. There are 16 blue 8-way DIP switches in a 4x4 grid, each with a corresponding 8 diodes - yes I really had to solder 128 diodes. There are 13 ICs, a few resistors and some miscellaneous components.
September 28, 2025 at 3:43 PM
emalliab.bsky.social
Using a Raspberry Pi V1 and HDMIPi as a serial terminal for a RC2014.... almost.

emalliab.wordpress.com/2025/05/30/r...

#RaspberryPi #RC2014
Photo of a rc2014 and a HDMIPi display with a small solderless breadboard inbetween with a single chip on it, connected to both via jumper wires. The RC2014 is on and the display shows the boot information showing that BASIC is running.
May 30, 2025 at 5:44 PM
emalliab.bsky.social
Just had a bit of a deep-dive into two new topics:
First: Various I2C connections - Stemma, Qwiic, etc
Then: A cheap, and largely undocumented ESP32C3 OLED board.

emalliab.wordpress.com/2025/02/11/s...
emalliab.wordpress.com/2025/02/12/e...

#Arduino #I2C #ESP32C3
Photo of a small devboard with a USB-C connector, a 0.42" OLED display, two rows of 8 pins and a couple of buttons. The whole board is less than 30mm square.
February 12, 2025 at 7:43 PM