Module Makes Noisy Projects Easy
You want to add voice, music, or sound effects to your project. What do you do? Sure, it is easy enough to plug a Raspberry Pi or some other tiny …read more Continue reading Module Makes Noisy Projects Easy
Author Archives: Al Williams
Tech In Plain Sight: Tasers Shooting Confetti
One of the standard tropes in science fiction is some kind of device that can render someone unconscious — you know, like a phaser set to stun. We can imagine …read more Continue reading Tech In Plain Sight: Tasers Shooting Confetti
A Phone? A Ham Radio? Relax! It’s Both!
A lot of hams like to carry a VHF radio. Of course, nearly everyone wants to carry a phone. Now, thanks to the kv4p HT, you don’t have to carry …read more Continue reading A Phone? A Ham Radio? Relax! It’s Both!
A VIC-20 with no VIC
[DrMattRegan] has started a new video series to show his latest recreation of a Commodore VIC-20. The core of the machine is [Ben Eater’s] breadboard 6502 design. To make it …read more Continue reading A VIC-20 with no VIC
Approximating an ADC with Successive Approximation
[Igor] made a VU meter with LEDs using 8 LEDs and 8 comparators. This is a fast way to get one of 8 bits to indicate an input voltage, but …read more Continue reading Approximating an ADC with Successive Approximation
What’s Your SWR? Are You Sure?
If you are involved in any sort of radio transmission, you probably have at least heard of SWR or standing wave ratio. Most transmitters can measure it these days and …read more Continue reading What’s Your SWR? Are You Sure?
Repairing a Component on a Flex Connector
It used to be you could crack open a TV or radio and really work on the components inside. The smallest thing in there was maybe a disc capacitor a …read more Continue reading Repairing a Component on a Flex Connector
Repairing a Component on a Flex Connector
It used to be you could crack open a TV or radio and really work on the components inside. The smallest thing in there was maybe a disc capacitor a …read more Continue reading Repairing a Component on a Flex Connector
Wimbledon Goes Automated
When you think of tennis, you probably think of Wimbledon, the All England Club’s famous competition that has run for 147 years. Part of that history has always been line …read more Continue reading Wimbledon Goes Automated
The Punched Card Detective
[John Graham-Cumming] might not be the first person to thumb through an old book and find an IBM punched card inside. But he might be the first to actually track …read more Continue reading The Punched Card Detective