A couple of weeks ago I assembled one of the BoldPort Club kits I had piled on my desk. This one was project #8, titled LIGEMDIO. It’s an LED tester and the name comes from the first letters of Light Emitting Diode, LED.
It was a cool little build after I swapped out to an old soldering iron and it’s a project I’ll actually get some use out of. Would have been nice to have when I tested all of the LEDs for the 8x8x8 cube.
I like it when the new HackerBox shows up on a weekend.
I always see electronics projects for making some kind of digital synthesizer to generate sounds so it seems to be a common project. It’s one I’ve never done, so I’m looking forward to experimenting with this box.
The official content list from the Instructable:
- HackerBoxes #0028 Collectable Reference Card
- Exclusive JamBox Printed Circuit Board
- ESP32 DevKitC
- CJMCU PCM5102 I2S Digital-to-Analog Module
- Four MAX7219 8×8 LED Matrix Modules
- Five 10K Ohm RV09 Potentiometers
- Five Potentiometer Knobs
- Eight Tactile Momentary Buttons
- Four Adhesive Rubber Feet
- 3.5mm Audio Patch Cable
- MicroUSB Cable
- Earbuds with Case
- Exclusive HackerBoxes Skull Decal
- Octocat Fan Art Decal Sheet
Unfortunately the demo code included in the guide only uses the potentiometers, buttons, and LEDs. Will need to do some tinkering to turn this into a synth.
I successfully built the second piece to a large project I’m working on. I’ve essentially built my own XL Raspberry Pi HAT (Hardware Attached on Top). Since I’m not following the specs, I shouldn’t really call it a HAT.
I’m not sure how, but once again I correctly connected everything on the first try. Either I’m extremely lucky, my attention to detail is paying off, or a combination of the two. I’m just waiting for some catastrophic failure to happen soon when I solder things the wrong way one of these days. Every one of my solder bridges worked. I did run continuity tests on all of the early bridges, which I’m sure was a big factor to my success.
Any guesses on what this board does? Leave your best guess in the comments. It’ll be at least a month before I share more details because I need to finish the entire project first.