Want Arduino projects for your Model Railroads? Learn about object / block detection sensors, signaling, servo control, inter-Arduino communications, JMRI integration, speed measurement, turntable indexing and sound projects. All code and schematics included, as well as step-by-step instructions. Arduino Intermediate
Flyback Diodes are used with inductive loads like dc motors and relays. Lets use a relay for an example. A common relay has a 12v 120 ohm coil. In use it draws .1 Amps. When you turn off the power,
Many of our projects are running off the common 18650 Lithium Ion battery, so today we wanted to talk about the math of charging, and of course we want to use an Arduino to manage that charge. Lithium Ion batteries
I wanted to monitor temperature with a ESP8266, and display the results on a web page. I grabbed a DS18B20 temperature sensor, and created a web server to display the results. I decided to use Ajax, so that the results
Do you want to learn Computers, Electronics, and Programming? For the last 40+ years kids and adults alike have been building their own computers instead of buying prebuilt, preloaded systems. Times have changed, and so has hardware and software. Some
In our Arduino projects (programmed in C/C++), we often use a Raspberry Pi for collecting data, and the Python programming language. Math with floating point is inherently risky, because a decimal number does not store exactly in binary. in python,
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