Category Archives: Microcontrollers

The ESP32, Laid Bare

Most readers will be familiar with the ESP32, Espressif’s dual-core processor with integrated WiFi and Bluetooth. Few of us though will have explored all of its features, including its built-in encryption facilities and secure booting capability. With these, a developer can protect and secure their code, and keep their devices …read more

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Posted in ESP32, glitching, Microcontrollers, news, security, security hacks | Leave a comment

A Self-Expanding PWM Driver

For smaller microcontrollers, having enough outputs for the job is sometimes a challenge. A common solution is to do some sort of multiplexing with the available outputs or perhaps something more advanced such as Charlieplexing, but another good option is to use a specialized driver board. What’s even better is …read more

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Posted in driver board, ESP32, headers, inputs, led, microcontroller, Microcontrollers, multiplexing, outputs, shield, trick | Leave a comment

Break The Caps Lock Habit With This Annoying Buzzer

The much-maligned Caps Lock key has been causing problems for decades, and its continued existence is controversial enough that Google decided to drop it all together in their Chromebooks. Until the rest of the industry decides to follow their lead, they’ll likely be no shortage of awkward emails or overly …read more

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Posted in buzzer, caps lock, Microcontrollers, peripherals hacks, PIC16f1459, reminder | Leave a comment

Weather Station Gets Much-Needed Upgrades

Weather stations are a popular project, partly because it’s helpful (and interesting) to know about the weather at your exact location rather than a forecast that might be vaguely in your zip code. They’re also popular because they’re a good way to get experience with microcontrollers, sensors, I/O, and communications …read more

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Posted in microcontroller, Microcontrollers, rain, sensors, sparkfun, update, weather station, Wemos, wemos d1 mini, wind | Leave a comment

ESP8266 Unlocks Hidden Features In Sound Bar

It’s no secret that the hardware devices we buy are often more capable than their manufacturer leads on. Features hidden behind firmware locks are a common trick, as it allows companies to sell the same piece of gear as a different model by turning off certain capabilities. Luckily for us, …read more

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Posted in AD83586B, amplifier, audio hack, home entertainment hacks, LG, Microcontrollers, sound bar | Leave a comment

Creating a Bode Analyzer from a Microcontroller

Electrical engineers will recognize the Bode plot as a plot of the frequency response of a system. It displays the frequency on the x-axis and the phase (in degrees) or magnitude (in dB) on the y-axis, making it helpful for understanding a circuit or transfer function in frequency domain analysis. …read more

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Posted in bode plot, Engineering, high pass filter, microcontroller, Microcontrollers | Leave a comment

Beam Me Up to the PCB Space Ship

This project would fit in perfectly with #BadgeLife if someone could figure out a way to hang it from their neck. Inspired by Star Trek’s Starship Enterprise, [bobricius] decided to design and assemble a miniature space ship PCB model, complete with 40 blinking LEDs controlled by an ATtiny85.

While the …read more

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Posted in 2019 Hackaday Prize, Hackaday Prize, leds, microcontroller, Microcontrollers, pcb | Leave a comment

This Home-Etched ARM Dev Board Is A Work Of Art

One of the step changes in electronic construction at our level over the last ten or fifteen years has been the availability of cheap high-quality printed circuit boards. What used to cost hundreds of dollars is now essentially an impulse buy, allowing the most intricate of devices to be easily …read more

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Posted in dev board, etched PCB, etching, Microcontrollers, pcb, stm32 | Leave a comment

PrintEye Gives You Stats in a Blink

Once upon a time, most things were single-purpose, like the pocket watch. Then somebody made a watch with a date function, and next thing you know, we had TV/VCR combos and Swiss army knives. Now, people pull computers out of their pockets just to check the time or the bed …read more

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Posted in 3d Printer hacks, atmega 328p, duet controller, Duet3D, json, Microcontrollers, oled, printer monitor, reprap controller | Leave a comment

This Word Clock Has Dirty Alphanumeric Mouth

Clocks which use words to tell the time in place of numbers are an increasingly popular hacker project, but we have to admit that before seeing this gorgeous clock from [Mitch Feig], we didn’t realize how badly we wanted to see one that could curse like a sailor.

But don’t …read more

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Posted in alphanumeric display, clock hacks, ESP32, led, Microcontrollers, web interface, word clock | Leave a comment