Arduino Projects, Tips and More
Combining the Widgets
Occasionally I will be inspired to build a small project as I play with Arduino bricks and displays. Sometimes I will want share a tip.
Other times I simply want to share something not necessarily limited to the Arduino. This is where you will find those articles.
Find Your I2C Address
Ever have a module where you are not sure of the I2C address? This sketch will make finding that I2C device address a snap.
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Arduino 18650 Battery Charger
It is possible to use various components to make a battery charger. This article shows how and offers insights into battery charging.
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DYE-ME001A Smoke Detector User Manual
Similar in technology to household smoke detectors. Control is simple and you could interface this to your Arduino.
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Powering a 50W LED with a Car Battery
Super bright LEDs are cool but need careful power management. This project shows how to power a 50W LED with a car battery.
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MAX471 Arduino Power Meter
Measuring power requires voltage and current. The MAX471 measures both, allowing you to calculate power consumption with your Arduino.
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Arduino Op Amp Basics
A streamlined article presenting Op Amp basics for beginners, covering inputs, outputs, and the three basic configurations.
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PWM to DC Op Amp Converter
See how to convert your Arduino PWM Output to a stable DC voltage signal using a resistor, capacitor, and an LM358 Op Amp.
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Programmable Op Amp 10VDC Source
Use a digital-to-analog converter (MCP4725) with an op-amp (LM358) to create a programmable 0-10V DC voltage source controlled by your Arduino.
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Programmable 10 Volt Power Supply
Build a programmable power supply capable of up to 3A using an MCP4725 DAC, an LM358 op-amp, and a TIP122 transistor.
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Programmable Constant Current Power Supply
Using readily available components, learn how to create a programmable constant current source controlled by your Arduino.
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Easy Temperature Data Logger
This tutorial shows a simple way to log temperature data using Arduino and demonstrates plotting the acquired data using Google Sheets.
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Waiting For Serial Monitor Input
Learn how to pause your Arduino program execution using `Serial.available()` until you send a command via the Serial Monitor.
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LoLin NodeMCU with Arduino IDE
Shows you how to use your Arduino IDE to program an ESP8266-based NodeMCU development board. Includes a WiFi scanning sketch.
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Powering Up the NodeMCU
Provides a list of several power supply options for your ESP-12E NodeMCU board.
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ESP8266 Pin Outs
Shows the pin outs for the ESP8266EX chip itself and describes their functions.
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ESP-01 Schematic and Pin Outs
Useful reference drawings including pinouts and basic schematic for the popular ESP-01 module.
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Basic NodeMCU IO: Blink
Beginner tutorial to help you get familiar with controlling the digital Input/Output pins on the NodeMCU board.
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Use PWM with NodeMCU and Arduino IDE
Beginner's tutorial that shows how to use pulse width modulation (PWM) with a NodeMCU board using the Arduino IDE.
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Get Switch Input to the NodeMCU
Acquiring switch or digital input is fundamental. This tutorial shows you how to read a button press with your NodeMCU ESP-12E.
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Arduino CAN Module Reference
Includes schematics, pin outs, component locations, and key datasheets for common MCP2515-based CAN bus modules.
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Build your 1st Arduino CAN Bus Network
Shows you how to use the CAN Bus Module to build your first simple Controller Area Network connecting two Arduinos.
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Connect ESP-12E NodeMCU to Wifi Router
The first step in getting your NodeMCU to work as an IoT device is connecting it to a WiFi Router. This tutorial shows you how.
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Publish Values to the Internet Using NodeMCU
A step-by-step procedure for those new to ESP8266 and IoT, demonstrating how to send data from your NodeMCU to an online service.
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MQTT Basics for the Beginner
A very brief and simple-to-understand article describing the MQTT protocol for the absolute beginner in IoT.
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A Google Charts Gauge for your IoT Object
Use NodeMCU to communicate to CloudMQTT. Display a gauge on a Blogger webpage using Google Charts.
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Build a CAN Bus Interface for an Arduino
A couple of chips, capacitors, and a crystal will get you started building your own CAN bus interface circuit for Arduino.
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