Clik here to view.
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...
View ArticleCadSoft 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...
View ArticleAVR 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...
View ArticleClik here to view.
Cheap 2X16 red/black LCD tests
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...
View ArticleClik here to view.
Review of the XC9572XL clone by Numato Lab
A few weeks ago Numato Lab ported our XC9572XL CPLD breakout board to KiCad. Hilipka got one of their assembled boards for free and wrote a review. its quite a nice board, feeld of high quality even...
View ArticleClik here to view.
MicroCC microamp-range constant current source
MicroCC is a constant current source, but focused on the low current microamp range. It uses the Touchstone Semiconductor TSM6025 voltage reference, a drop in replacement for the MAX3025 with better...
View ArticleClik here to view.
Global Geek Shenzhen: USB microscope
We all bought one of these USB microscope at the SEG Market. We were immediately fond of the heavy base and the smooth adjustment of the camera. We bargained a bit and bought it for 260 RMB ($40),...
View ArticlePoor man’s pogo test pins
To test his LCD launchpad booster packs, Robg improvised some DIY test connections. Using slightly larger than standard male headers and some rubber-bands, he is able to make solder-less contact...
View ArticleClik here to view.
A look at the Teensy 3.0 testbed of nails
SJaak refers us to this article by Paul Stoffregen about how they test new Teensy 3.0 boards using a “testbed of nails.” Essentially the Teensy 3.0 crew has developed this testing interface which...
View ArticleClik here to view.
Testing the new reduced-sized ICSP connector
This week we received a batch of PCBs and amongst them was the latest revision of our USB TFT breakoutboard. This board is the first board that features a new ICSP footprint, which occupies less space...
View ArticleClik here to view.
DigiPot assembled
Matseng continues his challenge of designing one PCB a week. His week 2 board, the DigiPot, has arrived and he assembled it. He did run into problems soldering the connectors which he unfortunately...
View ArticleClik here to view.
Simple LED tester/matcher
Here’s a simple adjustable current source with a PNP transistor that drives either one or two LEDs for testing and/or intensity matching purposes. The current is from 2 to 16 mA in four steps using a...
View ArticleClik here to view.
ATtiny25 Basic VCO, RC oscillator overclocking and testing frequency pickup
Alex over at InsideGadgets has posted an article describing how he built an ATtiny25 voltage controller oscillator (VCO): I recently bought a Rigol DS1052E and have been playing around with the...
View ArticleClik here to view.
Dummy electrical Load
Debraj built an electrical dummy load to test his power supply and wrote a post on his site detailing it’s assembly: Recently, I purchased a power supply that claimed a max current of 2A and 0~15V. So...
View ArticleClik here to view.
Microprocessor controlled 16 line connectivity tester
An ATmega32 based Proteus simulation of 16 line connectivity tester by Dilshan Jayakody: The main functionality of this system is to detect open and short circuits in cables and connectors. This...
View ArticleClik here to view.
FriedCircuits inline voltage/current tester board
Edouard gives us a preview of the new version of the in-line voltage/current tester board by FriedCircuits. He reports that the board is also compatible with the OLED Backpack (requires separate USB...
View ArticleClik here to view.
DTMF decoder test circuit
Kenneth Finnegan writes: As part of a few projects I’m working on, I want circuits to be able to decode DTMF tones played over an amateur radio link for remote control. This can be done with a...
View ArticleClik here to view.
Making your own test leads
Viktor wrote a post on his blog detailing his DIY test leads: The result is that now I have proper test leads with resistance of less than 0.1 ohm per meter. This is a measurement of one of my new...
View ArticleClik here to view.
FT230X charger detection investigation
Baoshi writes: I bought some FT230X (FT230XS) USB-USART bridge chip recently for a new design. FT230X is not only cheaper than the traditional FT232RL, but also offers a new fancy “USB charger...
View ArticleClik here to view.
Kevin’s LED tester
Kevin Rye designed a simple LED tester: I decide to put together a small LED Tester board. It’ll be powered by a small coin cell battery. I can pick up an LED with a pair of tweezers and just simply...
View Article
