We got our hands on a few cheap 2×16 red/black LCDs of eBay for $5 a piece, these are the same LCDs from the unboxing video. In preparation to build the soldering iron driver, we tested them out with the Bus Pirate LCD adapter and the USB LCD Backpack. Initially we were worried that the […]
Category Archives: testing
AVR transistor tester build
Alan Garfield at fromorbit writes: Hey guys, I built up that AVR Transistor Tester that’s been bouncing around on your site for a few weeks. Thought you might like to see it. I’ve done this short video showing it in operation and also written up a few of the misadventures I had while building it. […]
CadSoft releases EAGLE Version 6 for beta testing
Eagle has released beta Version 6 of their CAD software for public testing. They note: We suggest that only users who already have experience with previous versions of EAGLE participate in the beta test. If you are new to EAGLE please use our current release version. CadSoft notes that the beta version is NOT for […]
ATtiny2313 based servo tester
Ejberg.dk has developed this project for a simple ATtiny2313 based servo tester. This device lets you test servos by varying the pulse width between limits of 0.8000 ms and 2.2000 ms selectable through the use of four buttons. While the schematic shows an Atmel AT90S2313, the circuit will work with the popular ATtiny2313 using version […]
Web platform and Thermal Tweeter wireless tethering
The Thermal Tweeter needs a wired ethernet internet connection to get tweets. At the Open Hardware Summit and Maker Faire we’ll be lucky to have wifi. Likely we’ll need to use a 3G wireless connection. We need a way to bridge the wireless data services to a wired connection. Today we picked up a cheap […]
Update: Seeed Studio to help Japan
An update from an earlier post, Seeed Studio has come up with a design for their radiation detector. Well, as always our product will be open-sourced and hackable with flexible working conditions and at a comparatively lower price. Importantly, they will be plenty of stock. And we are also thinking a distribution pattern calls “sell […]
Mini AV tester in Altoid’s tin
Chris from PyroElectro was looking for a way to miniaturize his previous VGA test box to make it more suitable for portable use. He came up with this design for a Mini AV Test Box for portable testing of VGA displays and speakers. His project fits a full fledged AV tester into a mint-tin can […]
$20 fuel injector tester
If you’re into DIY auto maintenance, here’s a project for you. Fuel injectors are made up of a coil of wire which opens a valve when energized, basically an electronic solenoid valve. These can wear out and to diagnose them properly requires more than just applying 12 volts and listening for a click. Dino, a […]
Attiny2313 based LAN cable tester
Vasilis Stergiopoulos has built a RJ45 LAN cable tester. The circuit was originally designed to use a 555 and 4017 IC, but Vasilis has published the schematic and source code in assembly for using the Attiny2313 instead. The Attiny2313 produces successive outputs at port D, where the LAN-cable is connected. If a straight cable is […]
VGA tester using Attiny2313
Tehnik Service presents a simple Attiny2313 project to test VGA monitors. Just the chip and a handful of discrete components are needed and the source code is provided in both assembly and a hex file, ready for download. Via PyroElectro.
Function generator using Atmega16P
Scienceprog shows how to construct a function generator using the Atmega16P. Code and schematic are included, and the project uses a repurposed PC power supply to provide 5 and 12 volt sources.
USB IR Toy prototype testing
Testing a USB IR Toy update, the infrared light is visible to the camera. This design uses three LEDs. Two 50degree wide-angle LEDs on the side, and a 25 degree narrow beam LED in the center. Total current is 100mA, could be pushed to 200mA. Using 3 LEDs let us use a smaller current limiting […]
Soldered prototypes
A big box of PCBs arrived earlier today. Here’s the current progress: 3 PIC USB LCD backpacks, 2 Bus Pirate v4, and a USB POV Toy. Still waiting on a couple parts, but these boards are almost done.
USB LCD backpack display trials
Testing the USB LCD backpacks with two different character LCDs. We’ve noticed ghosting in several different brands of blue/white LCDs, have you had a similar experience? Follow our progress in the development thread.
More USB LCD backpack testing
IPenguin tested the full and mini USB LCD backpack. Follow our progress on this project in the forum.
USB LCD backpack testing
The full and mini version of the FT232 USB LCD backpack worked right away. Follow our progress in the development thread. We’ve requested a quote for this project, an initial batch will be available about three weeks after we send the final manufacturing package.
Test script processor for the Bus Pirate
Here’s another use for the AT Command Script Processor we posted last week. We’ve been using to run test scripts on new Bus Pirate firmwares. Get a Bus Pirate v3b for $30, including worldwide shipping at Seeed Studio. Adafruit also has the Bus Pirate and probe cables in stock and ready to ship. Each Bus […]