Bit-banging a VGA signal generator. Computers aren’t very exciting until they have a display of some sort. Well, I suppose if you’re at Bletchley
Veronica – Enclosure
A little something to keep the mice from eating Veronica’s wires. Well, I finally got back to working on Veronica, but this project is
Garage Door Opener
Breathing new life into (not-so-)old crap. You know, I feel like I could write a whole other blog entitled Making Crap Last a Little
PCB Etching Mega Redux
Revisiting my PCB Etching. I’ve had a number of requests to revisit my old PCB etching technique and update it with things I’ve learned since
AVR WiFi
A failed(?) experiment in wifi on an ATTiny. This is a quick sidebar away from Veronica for a moment. That project is very popular, and
Veronica – ROM Board
ROM board with built-in EEPROM programmer. It seemed so simple. The best ideas always do. However, sometimes the smallest problems end up taking the
Veronica – EEPROM Programmer
An onboard way to program an EEPROM, or fake one. Well, now that Veronica is up and running in real hardware form, she needs
Veronica – CPU Board
A real copper home for our girl. Now that we have Veronica’s backplane mostly sorted, we have everything we need to move the 6502
Veronica – Backplane
Time to get serious. Well, Veronica is alive, and running code that we can put (very slowly) into memory. So far so good, but
Veronica – ROM Emulator
Real memory! If you recall from last time, we got Veronica to perform a free run by NOP-ing her way through a phantom memory
Veronica
Veronica. Now for something a little different. I was first exposed to computers back in the late 1970s and early 1980s. Suffice it to
HexOut (3/3)
A 16 bit hexadecimal display module. This is part 3 of a three-part series. You can find part 1 here, and part 2 here.
HexOut (2/3)
A 16 bit hexadecimal display module. This is part 2 of a 3-part series on the HexOut module. Check out Part 1 first! If
HexOut (1/3)
A 16-bit hexadecimal display module. I’ve been wanting to take on more advanced digital design projects. I also like making multi-purpose tools and modules.
LED TV Wall Mount
Adapting the old to the new Sometimes the simplest hacks are the most useful. My beloved ten-year-old Pioneer 502MX plasma television died recently. It
Cardio Power
Conversion of an exercise machine to mains power I have an elliptical cardiovascular training machine that I’m quite fond of. It has a nice
Bread Head
A breadboard programming header for AVR microcontrollers I’ve been working with AVRs quite a bit lately, and I wanted a quick way to program
Race Clock
An automatic stint timer for endurance racing My crazy friends and I regularly compete in something called The 24 Hours Of LeMons. It’s a somewhat
USBtinyISP
Building Adafruit’s AVR Programmer kit I needed a quick and dirty ISP programmer for a project that was on a very tight deadline. Adafruit’s
Dish-O-Tron 6000 Extreme
Revision B of the Dish-O-Tron 6000 Making something work on the bench, and making it work in the real world are often very different
Juice Bridge
Getting magic smoke into your breadboard with style. I have a basic low-end benchtop supply. It does the job just fine, but is a
Cheap, Friendly, and Accurate PCB Etching
A simple and easy way to make precise PCBs UPDATE: There’s a new and much more detailed version of this article here. This is
Salad Spinner Upgrade
Repair and improvement of a broken salad spinner. This is another classic case of an otherwise well made product ruined by a single fatal flaw.
Mintzilla
A mint tin that gets angry when his mints are taken! I was thinking about video game controllers, and what fun parts there are
AAAA Batteries
A cheap source of AAAA batteries The little-known AAAA battery can be very useful indeed. It’s very small, and thus can be crammed into
Dish-O-Tron 6000
A device to detect when the dishes in the dishwasher are clean or dirty I’m absentminded in general, but especially so when it comes to
Beating Heart Pendant
A heart-shaped pendant with a life of its own While reading through Charles Platt’s excellent book Make: Electronics, I came across this nice little circuit for
Racing Video Training System
A two-camera video recording system I built for my Lotus Elise My goal for this system was to build something that would help me
Mr. T in a Box
A themed novelty horn for a 24 Hours of LeMons race car. Let’s say your race car needs a horn. Now say that car
Toothbrush Repair
Replacing the “non-replaceable” battery in a Phillips SonicCare™ toothbrush Don’t you hate it when a $140 gadget is rendered useless by the failure of