Boilarm – Never again do you have to check whether your water is boiling.

Never again do you have to check whether your water is boiling. Put on your headphones and let your phone notify you!

Have you ever had to wait for your water to boil to make some pasta, but you hate waiting for it? Or, has it ever happened to you that you put the water pot on the stove, put on your headphones and forget you ever left it there? If these bring some resemblance to you then we have the perfect product for you!The Arduino BLE paired with our mobile app allows you to do other important things while the water is heating up. When the water boils, the app simply tells you that the water is boiling, even if you’re in another room.So put the water on the stove, turn on our device, put on your headphones and relax. We’ll take of the rest. 🙂

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How to make an Arduino custom I2C slave sensor/device

In this video, I’m exploring the idea of having your own I2C slave devices and sensors where a helper Arduino is used just for the sensor and the main controller does all of the control logic.

In my case, the slave I2C device is a dedicated controller for a motor speed controller (AC dimmer) that monitors the AC zero-crossing point and it listens on a specific I2C address for the speed at which the motor should run.

By using two separated Arduino Nanos, I can utilize the interrupt pins on both controllers where the one on the slave device will monitor the zero-crossing signal and the other one can be used for interfacing with the UI through a rotary encoder.

Clothing Iron Transformed Into PCB Hot Plate

Electronoobs shows how to convert a conventional clothes straightening iron into a PCB reflow hot plate.

When you see the word “iron” here on Hackster, you probably think of a soldering iron, used to construct a wide variety of electronic projects. To the rest of the world, however, an iron instead means something that is used to straighten clothing – an item that is produced in mass quantities, and which is both widely available and inexpensive.

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Arduino MIDI Mouse Controller

I hate throwing away old electronics that still work but are no longer supported by modern appliances. My idea for this project came after finding an old PS/2 port roller ball computer mouse that I no longer had a use for. I’m a musician in my spare time and currently recording an EP with my metal band HELL SHEEP. I’m using MIDI controllers to create synth parts for our tracks on pro tools. Many people use a MIDI keyboard to write MIDI parts on the computer. I’m no pianist so I have been experimenting with different methods of writing MIDI, including using chess games and cellular automata. Trying to think of a way to re-use the old computer mouse, it occurred to me that it could be repurposed with Arduino as a nifty MIDI controller.

(For those of you who don’t know what MIDI is, check out this great video by Collin’s Lab.)

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iToronto’s Raspberry Pi Pico-Powered GPS Data Logger Makes Use of an Upcycled Pill Bottle Housing

Designed to fit in a pill bottle with a 3D-printed lid keeping everything in place, this GPS logger keeps track of its creator’s hikes.
Pseudonymous maker “iToronto” has shown off a build that repurposes an old pill bottle to create a compact, battery-powered GPS logger — driven by a Raspberry Pi Pico board.

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Aaron Christophel’s Open Source Tool Unprotects, Reads, and Flashes Any nRF52 From an ESP32

Designed to unlock protected nRF52 SoCs, Christophel’s tool follows on from a similar exploit discovered for protected STM8 chips.

Developer Aaron Christophel has released a tool to read and write the internal flash of any part in the Nordic Semiconductor nRF52 family — using little more than a low-cost Espressif ESP32 microcontroller.

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A USB Cable Tracer

Test and diagnose your USB cables with this Arduino-based device.

While USB (Universal Serial Bus) connections are in many ways a huge improvement over the parallel, serial, and specialized ports of old, “universal” is still a bit of an overstatement. With a variety of physical form factors and ever-evolving standards, there’s more to making a proper connection than simply plugging any cable in.

Making things even more complicated, just looking at a USB cable’s form factor isn’t always enough to tell whether it will properly power and transfer data to and from your device. Perhaps a particular Micro cable is only for charging, leaving out the data pins, and thus leaving you frustrated as to why you can’t program a certain board. Or maybe a cable is broken internally. To get to the bottom of these potential connection issues, TechKiwiGadgets has come up with the Arduino Cable Tracer.

More info is available in TechKiwiGadget’s project write-up, along with a wiring chart and Arduino code.

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Jonathan Pallant’s Neotron Pico Turns the Raspberry Pi Pico Into a Full-Size ATX PC Motherboard

Based on the earlier Neotron 32, the Neotron Pico is an RP2040 home computer straight from the ’80s but compatible with modern cases.

Embedded Rust developer Jonathan Pallant is taking the popular Raspberry Pi Pico microcontroller board in a new direction: a simplified home computer, complete with a motherboard compatible with ATX cases.

Released earlier this year, the RP2040-powered Raspberry Pi Pico has been a stellar success. Despite being designed primarily for embedded microcontroller applications, it’s found a home in a range of unusual projects — like a visual synthesiseran interactive MicroPython-based computer for your deskanother for your pocketan emulated BBC Microan emulated 80186 PC, and even a Nintendo Entertainment System.

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