David Ashton (25)

| When I was asked to review the Zeeweii DSO3D12 oscilloscope, I was quite excited. A 120-MHz scope, a multimeter (DMM) and a signal generator...

| Back in the ’80s, getting text on screens was a Herculean task, far from today’s plug-and-play ease. Spare a thought for those wrestling wit...

| The piezoelectric effect has been known since the 1880s, but how it got from a scientific curiosity to a staple in modern electronics is a s...

| Cold-cathode devices are a type of gas-discharge device that uses a low-pressure gas to produce light. The simplest cold-cathode device is t...

| Cold-cathode devices are a type of gas-discharge device that uses a low-pressure gas to produce light. The simplest cold-cathode device is t...

| It’s easy to make a standard relay latch. Use a spare contact to switch power to the coil as soon as it is operated, and the relay will stay...

| Got dead Ni-Cd batteries lying around? You can still revive those! This clever circuit, featuring a 555 timer, brings them back from the dea...

| The DSO-TC3 is one of those amazing all‑in‑one pieces of test equipment which seem to be becoming more common these days. It offers a wide r...

| Embedded engineers and hobbyists are spoiled for choice these days regarding computing power, thanks to the vast array of microcontrollers o...

| A stepper motor driver? What’s peculiar about that? There are probably hundreds of them! Well, the peculiarity of this one lies in its simpl...