Category Archives: wireless

ESP8266 Makes a Wireless Card Reader

You can find commercial USB sticks that can also connect via WiFi. But [Neutrino] made his own using an ESP8266 married to a card reader. It all starts with the old trick of soldering a header to an SD card adapter. The USB port is still there, but it is …read more

Continue reading

Posted in esp12e, ESP8266, sdcard, wireless, wireless hacks | Leave a comment

Hands On With a Batteryless E-Paper Display

E-paper displays are unusual in that power is only needed during a screen update. Once the display’s contents have been set, no power whatsoever is required to maintain the image. That’s pretty nifty. By making the display driver board communicate wirelessly over near-field communication (NFC) — which also provides a …read more

Continue reading

Posted in barcode, dithering, e-ink, e-paper, Hackaday Columns, name badge, New Part Day, NFC, parts, qr code, waveshare, wireless, wireless hacks | Leave a comment

Sending IP Over Morse, Because Why Not?

Are you a ham radio operator? Have you ever felt the need to send IP over Morse? If you answered yes (or no) and don’t mind a few manual steps between converting network packets to and from and Morse code, [Folkert van Heusden]’s IP Over Morse project has you covered. …read more

Continue reading

Posted in digital audio hacks, ham, internet hacks, morse, morse code, wireless | Leave a comment

Poking Around the Wide World of Bluetooth

Bluetooth is a technology with a very interesting history. When it first came around in the late 1990s, it promised to replace the mess of wires that was tucked behind every desk of the day. Unfortunately, the capabilities of early Bluetooth didn’t live up to the hype, and it never …read more

Continue reading

Posted in Arduino Nano 33 BLE, ble, bluetooth, Bluetooth Classic, bluetooth low energy, ESP32, Microcontrollers, wireless, wireless hacks | Leave a comment

RF Modulation: Crash Course For Hackers

When you’re looking to add some wireless functionality to a project, there are no shortage of options. You really don’t need to know much of the technical details to make use of the more well-documented modules, especially if you just need to get something working quickly. On the other hand, …read more

Continue reading

Posted in ask, FSK, Hackaday Columns, LoRa, modulation, OOK, radio hacks, RF, wireless, Wireless Module | Leave a comment

Alarm System Defeated by $2 Wireless Dongle, Nobody Surprised

It seems a bit unfair to pile on a product that has already been roundly criticized for its security vulnerabilities. But when that product is a device that is ostensibly deployed to keep one’s family and belongings safe, it’s plenty fair. And when that device is an alarm system that …read more

Continue reading

Posted in 433 mhz, alarm, baofeng, dongle, jammer, jamming, lockpicking hacks, security, SimpliSafe, wireless, wireless hacks | Leave a comment

Fail of the Week: The Arduino Walkie That Won’t Talkie

There’s something seriously wrong with the Arduino walkie-talkie that [GreatScott!] built.

The idea is simple: build a wireless intercom so a group of motor scooter riders can talk in real-time. Yes, such products exist commercially, but that’s no fun at all. With a little ingenuity and a well-stocked parts bin, …read more

Continue reading

Posted in arduino, distortion, Fail of the Week, lm358, NRF24, RF, walkie talkie, wireless, wireless hacks | Leave a comment

Farting Baseball; From the Makers of Self-Solving Rubik’s Cube

Some hackers have a style all their own that is immediately recognizable from one project to the next. For instance, you can tell a [Takashi Kaburagi] by its insides. The behavior of his Farting Baseball project (machine translation) is amusing, but the joke is only skin deep. Look inside and …read more

Continue reading

Posted in 134a, baseball, classic hacks, curveball, gas blowback pistols, HFC134A, solenoid, wireless | Leave a comment

Smart Bike Helmet Is Wireless

If you ride a bike, you probably share the road with a lot of cars. Unfortunately, they don’t always share the road very well with you. [Mech Tools] took a helmet, a few Arduinos, and some wireless transceivers and made headgear that shows when you stop and also shows turn …read more

Continue reading

Posted in Arduino Hacks, brake light, helmet, motorcycle, motorcycle helmet, turn signal, wireless, wireless hacks | Leave a comment

Justin McAllister’s Simple, Post-Apocalypse-Friendly Antennas

Watch Justin McAllister’s presentation on simple antennas suitable for a zombie apocalypse and two things will happen: you’ll be reminded that everything antennas do is amazing, and their reputation for being a black magic art will fade dramatically. Justin really knows his stuff; there is no dangle-a-wire-and-hope-for-the-best in his examples. …read more

Continue reading

Posted in 2018 Hackaday Superconference, antenna, Antenna Design, antennas, cons, Hackaday Columns, radio hacks, rugged, wireless | Leave a comment