Teardown: 12V AC adapters

In the name of science, I introduced three of the worst 12V adapters (from My kingdom for a 12V adapter) to my bandsaw. What I found may shock you. Note: All pictures can be zoomed or opened at full size in their own tab. First on the chopping block, the “EH1205”. Wait! What’s this? The original AC connector is mounted to the PCB. Yes, this has been repackaged! I think we can assume the approvals on the lab ...

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Controlling Patient’s Fever with Artik & Arduino

This project consists of 2 devices. the first one is wearable and monitors temperature, second one will control the temperature. Things used in this project Hardware components Arduino MKR1000 × 2 SparkFun Logic Level Converter - Bi-Directional × 1 Li-Ion Battery 1000mAh × 1 RGB Diffused Common Cathode × 1 DHT11 Temperature & Humidity Sensor (4 pins) × 1 Relay Module × 1 Resistor 1k ohm × 2 Software app ...

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Solar Cell IV Curve Tracer

Do not attempt this project if you are not comfortable working with line voltages! *** This projects shows how to create an IV (Current and Voltage) Tracer that can be used to teach the electrical characteristics of a solar panel. This project was created as part of an Electrical and Computer Engineering capstone project at The Ohio State University. Step 1: What We Used for This Project Tools: Drill Drill ...

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HID Attack Over WiFi Using Arduino MKR1000

Arduino MKR1000 as a HID, for performing HID penetration testing over WiFi networks. Things used in this project Hardware components Arduino MKR1000 × 1 Story Arduino MKR1000 Today I have an Arduino MKR1000 which is a board with built-in wifi chipset specially designed for IOT projects. Recently I came to know that, this little board can act as a Human Interface Device such as a keyboard or a mouse. So I th ...

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Basic Switching Voltage Regulator Tutorial

A switching voltage regulator is one of my favorite circuits. In school, they were the first circuits I built where I understood how transistors worked. In fact, they were the first circuit I saw an inductor being useful! Switching regulators are incredibly efficient when designed properly. Of course, this detail about design is important. They are not as simple as a linear regulator, which is basically an ...

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Smart Garbage Monitoring System Using Arduino 101

A method in which waste management is automated. An innovative system that will help keep the city clean and healthy Things used in this project Story Introduction Smart Garbage Monitoring System Using Internet of Things (IOT) We are living in an age where tasks and systems are fusing together with the power of IOT to have a more efficient system of working and to execute jobs quickly! With all the power at ...

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Arduino Body Thermometer + LCD I2C

I've decided to provide a funny Arduino concept thermometer in case its the middle of the night, pharmacies are not working, you are not feeling well and you want to check your body temperature. If you have Arduino by your side, this is a life saver! Components you will need: Arduino Uno/Nano, whatever Some breadboard wires A 10K resistor A thermistor ( I got it from my first Arduino kit) If you want to mak ...

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Getting Started with the Arduino Desktop IDE

Learn how to use the Arduino Desktop IDE at its best and install it on your PC! Story Download the Arduino Desktop IDE The Arduino IDE is a cross-platform Integrated Development Environment. This means that you can run it on every Operating System. To download the Arduino IDE visit the download page and choose the right IDE according to your Operating System. Install the Arduino IDE Once you have downloaded ...

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Simple circuit provides precision ADC interface

Real-world measurement requires the extraction of weak signals from noisy sources. High common-mode voltages are often present even in differential measurements. The usual approach to this problem is to use an op amp or an instrumentation amplifier and then perform some type of lowpass-filtering to reduce the background noise level. The problems with this traditional approach are that a discrete op-amp circ ...

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Dash Button Santa with Arduino MKR1000

Send information to Santa Claus about the status of the gift request. Things used in this project Hardware components Arduino MKR1000 × 1 SparkFun Pushbutton switch 12mm × 1 Jumper wires (generic) × 1 Resistor 10k ohm × 1 NeoPixel strip × 1 Software apps and online services Arduino IDE IFTTT Maker service Google Firebase Google Maps Story Introduction How many times have you asked Santa to bring you an Ardu ...

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AAduino – Arduino Wireless in AA form factor

More news: read all about the new AAduino Zero. News: the crowd sourcing campaign for  the AAduino will start soon, sign up at CrowdSupply to be notified! The specs have been beefed with an STM32L0 cpu and the temperature sensor is now an industrial grade TMP102. Update: you can now order the AAduino PCB from DirtyPCBs.com and get a Commadorable 64 bonus PCB for free. I have been using Nathan Chantrell’s Ti ...

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Add SSL Certificates To MKR1000

Cannot connect to your favourite https site with your MKR1000? Follow this guide to install SSL certificate in a easy way using the GUI. Things used in this project Hardware components Arduino MKR1000 × 1 Software apps and online services Arduino IDE Arduino Firmware updater Story Please note that with the IDE starting from version 1.6.10 the certificate uploader (and the firmware updater) is direct inside ...

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