Wi-Fi and OLED Upgrade for MightyOhm Geiger Counter

In this post I will show you how to add Wi-Fi connectivity and an OLED screen to the MightyOhm Geiger Counter kit. Lots of fun! Introduction I assembled my Geiger counter kit from MightyOhm some time ago. It's a very fun kit and the finished counter looks awesome. Oh, that Geiger-Muller tube sitting on that yellow PCB! I've always wanted to modify it somehow and add functionality. Today I realized that an A ...

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Control an Arduino Zero using Node.js

I had to delve deep into the code, but I finally got nodebots working on an Arduino Zero Story I recently received an Arduino Zero, arduino.cc’s latest offering. I’d been experimenting with nodebots, so I decided my first Arduino Zero project would be a nodebot. Anna Gerber has an excellent tutorial for doing nodebots using Arduino at http://node-ardx.org/ Not only is it well written and suitable for beginn ...

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Hack-proof RFID chips claimed by MIT

MIT researchers have developed a new type of radio frequency identification (RFID) chip that is extremely difficult to hack. If such chips were widely adopted, it could mean that an identity thief couldn’t steal your credit card number or key card information by sitting next to you at a café, and high-tech burglars couldn’t swipe expensive goods from a warehouse and replace them with dummy tags. Texas Instr ...

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GPS Tracking Using Helium, Azure IoT Hub, and Power BI

About this project Helium exists to help developers build low power, secure, connected devices. In this project, we'll walk through using the Helium Atom Prototyping module with an Arduino Zero and Adafruit Ultimate GPS Breakout to seamless send data to Azure IoT Hub and then on to a Power BI report to visualize the data. You can learn more about Helium's low power, secure, long range wireless products and ...

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Get Connected! WiFi Registration Using AP Mode!

Motivation So I've just spent an "all nighter" working on this new IoT device that's going to change the world. The sun comes up, and I'm off to demo the device and pitch to my friends for some seed capital and soul crushing criticism. I get to their house, turn the device on, it won't connect... quickly I realize the device is still flashed with my home WiFi credentials. Time to quickly edit my code, refla ...

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ESP8266 Troubleshooting Guide

The ESP8266 has a few common issues, specially when you are trying to flash a new firmware or uploading scripts. This is a companion guide to the Home Automation using ESP8266 and Password Protected Web Server eBooks. Here’s a compilation with some of the most common problems with the ESP8266 and how to fix them. ESP8266 Troubleshooting – NodeMCU Flasher Where do I download the NodeMCU flasher? Go to the No ...

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Arduino MPPT Solar Charger Shield

A friend has approached me regarding his solar project. He wants to install a solar panel together with a battery and an inverter in order to have power at his allotment garden. He had looked at a hobbyist project where an arduino was used to build a MPPT (maximum point of power tracking) charge controller. I took a look at the design, liked a lot of what I saw and decided to build something similar. The ba ...

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A Simple Arduino LED Example in Proteus

Hello friends, I hope all are fine and having fun with your projects. Today, I am going to share a very Simple Arduino LED Example in Proteus ISIS. I have designed a very basic example in Proteus in which I am going to blink single LED first using Arduino and then I am going to blink multiple LEDs in Proteus. When you start working on Arduino then Arduino LED example is the first example which you must try ...

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Layout Lights.

Purpose and concept The  "LayoutLights" concept was born when I wanted to remotely control (using a PC with a USB port)  the lights on the train layout. I wanted to be able to switch on and off all the lights in buildings, structures and on platforms, streets and  other locations.The basic principle is simple : * one master controller has  a USB interfact to the PC * the master can control up to 15 slaves, ...

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DCC mini central with IR remote control for testing locomotive decoders

I just wanted a simle DCC central wich I can use to test new DCC locomotives n ad potentially with a "program" mode so it can "break in" new locomotives for me by running them for specific periods of time in both directions.   The result is an Arduino  based DCC central.    It is based on some stuff I picked up from the  "interweb" and either slimmed it down or added new features.   It uses an ATMel 328  mi ...

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Scale Speedometer

What is this ? This project is a "real size"  speedometer for miniature trains, cars and anything you wish to measure. It can calculate the speed of the object between 2 measuring points along the track (or road) by counting milliseconds between passages at the  start and end gates.  If you enter the distance between those gates  (in dm) and the used scale  (ex. H0 = 1:87) in to the Arduino, it will calcula ...

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LED Tester with LCD Display

Most projects include at least one LED. Before soldering the LED, how can you determine if the color and brightness meets your needs? After that, how do you calculate the correct value resistor? Many years ago, I built a handy compact LED testing tool based on the LM317L adjustable current regulator. (You’ll definitely want to click on that link before continuing with this article.) It ended up being one of ...

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