Collaborate Disseminate
[Thomas Scherrer] likes to tear down old test equipment, and often, we remember the devices he opens up or — at least — we’ve heard of them. However, this time, …read more Continue reading Korean Multifunction Counter Teardown
If there’s anything more viscerally pleasing than seeing an eight-digit instrument showing a measurement with all zeroes after the decimal point, we’re not sure what it could. Maybe rolling the …read more Continue reading Upgrade Puts a Lot of Zeroes on Kit-Built Frequency Counter
[mircemk] had previously built a frequency counter using an Arduino, with a useful range up to 6 MHz. Now, they’ve implemented a new design on a far more powerful STM32 …read more Continue reading Simple STM32 Frequency Meter Handles Up To 30MHz With Ease
You think of digital displays as modern, but the idea isn’t that new. We had clocks, for example, with wheels and flip digits for years. The Racal frequency counter that …read more Continue reading Vintage Digital Frequency Meter Teardown
[CuriousMarc] is back with more vintage HP hardware repair. This time it’s the HP 5245L, a digital nixie-display frequency counter from 1963. This unit is old enough to be entirely …read more Continue reading Do Not Attempt Disassembly: Analog Wizardry In A 1960s Counter
One generally reads a data sheet in one of two ways. The first is to take every spec at face value, figuring that the engineers have taken everything into account …read more Continue reading To Turn an ATtiny817 into a 150MHz Counter, First Throw Out the Spec Sheet
Like many people who repair stuff, [Learn Electronics Repair] has an oscilloscope. But after using it to test a motherboard crystal oscillator, he started thinking about how people who don’t …read more Continue reading Clock Testing Sans Oscilloscope?
With regard to retro test gear, one’s thoughts tend to those Nixie-adorned instruments of yore, or the boat-anchor oscilloscopes that came with their own carts simply because there was no …read more Continue reading Edge-Mounted Meters Give This Retro Frequency Counter Six Decades of Display
Making a microcontroller perform as a frequency counter is a relatively straightforward task involving the measurement of the time period during which a number of pulses are counted. The maximum …read more Continue reading NTP, Rust, and Arduino Make a Phenomenal Frequency Counter
We were struck by how attractive [mircemk’s] Arduino-based frequency counter looks. It also is a reasonably simple build. It can count up to 6.5 MHz which isn’t that much, but there’s a lot you can do even with that limitation.
The LED display is decidedly retro. Inside a very modern …read more
Continue reading Easy Frequency Counter Looks Good, Reads To 6.5 MHz