Caleb sez, "My kids really have to scream from the back of my VW bus for me to hear them while we're flying down the highway. With this little hack, we have a nice intercom for them to talk to me with!"
The circuit to make two phones work as an intercom is extremely simple. You can see in the picture below, all you really need is a little bit of spare phone cable (or a spare junction box), a resistor, and a power source. A single 680 ohm resistor should let you use the 12V directly from your car or even a standard 9V battery if you’re wanting to make this portable (in a treehouse for example).
This circuit allows both ends to be picked up and audio to be transmitted either way. If you want it to ring, you’re going to have to come up with a slightly different circuit. However, since you’re not using the black and yellow wires, you could theoretically rig up a circuit with a buzzer that would run off the normal 12V.
Using old phones as an intercom in your VW bus (or anywhere else)
The new Ikea Catalog is making a big bet on very small living spaces — the kind of place that costs more than half your monthly salary but is too small for a dinner-table, let alone a separate room for your kids, who are supposed to sleep in a bunk-bed in the living room (“Why […]
8Bitdo’s prototype Desktop Arcade Joy Stick is a) an entire retrogame cabinet, complete with controls, display and guts, b) excellently crafted from wood, c) a surprisingly beautiful re-contextualizing of the experience of play. I’d like to own an entire arcadeful of these, in sizes ranging from 6 inches to 6 feet tall, in a colossal […]
Zippo went a bit crazy with its lighter colors, introducing a rainbow of material-science wonders that, alas, I have no more use for, being a 15-year ex-smoker with the muscle-memory of an entire repertoire of obsolete Zippo tricks.
Finding quality icons is a challenge for designers, and can also get pretty costly if you use them often. And when you’ve got a lot to do, the last thing you want to spend your time on is creating new icons from scratch That’s why we recommend using the Noun Project ($49). Noun Project is a site […]
While Netflix and Hulu have seemingly dominated the streaming market with their limited selections, we’ve looked a little outside the box and found something pretty great as an alternative. SelectTV combines all the content of cable with the convenience of streaming, and it’s affordable too.SelectTV is an online subscription service that packs an impressive library of over […]
These days, the vape market is saturated with low-quality products, making it nearly impossible to separate the gems from the duds. The Atmos Rx Dry Herb Vaporizer stands out from crowd for two reasons: its impressive battery life and durable construction. This high-end little gadget is compact enough to fit in your pocket, and packs a powerful punch, […]