December 23, 2020
addressable, addressable led, arduino, Arduino Hacks, attiny, chainable, daisy chain, dot matrix, ESP32, ESP8266, led, LED Hacks, led matrix, tiny led matrix

A Tiny LED Matrix Is Better With Friends

When we last heard from [lixielabs] he was building Nixie tube replacements out of etched acrylic and LEDs. Well he’s moved forward a few decades to bring us the Pixie, a chainable, addressable backpack for tiny LED matrix displays. Each Pixie module is designed to host two gorgeous little Lite-On LTP-305G/HR 5×7 LED dot matrix […]

December 13, 2020
communications, disaster response, ESP32, LoRa, Microcontrollers, off grid, Wireless Hacks

IRC Over LoRa, For When Things Really Go South

As a society, we’ve become accustomed to always-on high-speed data connections, whether we’re at home on the computer or out and about with a mobile device. But what happens if a natural disaster knocks out the local infrastructure? Sure some people will be able to fire up their radio if they need to reach out […]

December 2, 2020
ambient, display, e-ink, e-paper, ESP, ESP32, Hardware, Microcontrollers, status, weather, web ui

Templateize Your Timetable With EPaper Templates

To date, e-paper technology has been great for two things, displaying static black and white text and luring hackers with the promise of a display that is easy on the eyes and runs forever. But poor availability of bare panels has made the second (we would say more important) goal slow to materialize. One of […]

November 29, 2020
ESP32, gps hacks, gps tracker, GSM module, Microcontrollers, open hardware

Open Hardware GPS Tracker Works On Your Terms

These days, there’s plenty of options if you want to get a GPS tracker for your vehicle. Unfortunately, they come with the sort of baggage that’s becoming increasingly common with consumer tech: subscription fees, third-party snooping, and a sneaking suspicion that you’re more commodity than customer. So [Viktor Takacs] decided to take things into his […]

November 2, 2020
433 mhz, alarm, alarm system, classic hacks, ESP32, home hacks, optocoupler

ESP32 Adds New Features To 1990s Home Alarm System

Given how fast technology is progressing, some consumer gadgets lend themselves to being replaced every few years. Mobile phones are a particularly good example of a device that you probably won’t want to hold onto for more than 4 years or so, with TVs not far behind them. On the other hand, something like a […]

September 28, 2020
aa battery, adult toys, ESP32, Hardware, lipo battery, PCB design, sex toy, teledildonics, vibrator, Wireless Hacks

A Battery To Add A Tingling Sensation To Your Tweets

Internet-connected sex toys are a great way to surprise your partner from work (even the home office) or for spicing up long-distance relationships. For some extra excitement, they also add that thrill of potentially having all your very sensitive private data exposed to the public — but hey, it’s not our place to kink-shame. However, […]

July 29, 2020
bluetooth, bluetooth low energy, contact tracing, COVID, covid-19, ESP32, Microcontrollers, web bluetooth, Wireless Hacks

ESP32 Turned Open Source COVID-19 Contact Tracer

Over the past few months we’ve heard a lot about contact tracers which are designed to inform users if they’ve potentially come into close proximity with someone who has the virus. Generally these systems have been based on smartphone applications, but there are also hardware solutions that can operate independently for those who are unable […]

July 20, 2020
air quality, BME680, ESP32, home hacks

A Portable Home Air Quality Meter With The ESP32

Around the world, rolling pandemic lockdowns have left many working from home. [kn100] is in just such a predicament, and while spending nearly 24 hour a day in a residential flat, got wondering about air quality. Thus, it was time to build some gear to keep an eye on things! Grafana may require a database […]

July 3, 2020
Curiosity, ESP32, LoRa, remote control, Robots Hacks, rocker-bogie, rover

The Open Source Mars Rover, One Year Later

As the name implies, here at Hackaday we strive to bring you interesting projects every single day. But that doesn’t necessarily mean a project only gets one day to grace these storied pages. Quite the opposite, in fact. We’re always happy to revisit a project and find out how far it’s evolved since we last crossed […]

Category: ESP32