Latest PLCs Projects

Part four of a series of articles on building a robot that can follow lines or walls and avoid obstacles!

Part four of a series of articles on building a robot that can follow lines or walls and avoid obstacles!

Learn how to put together your own toaster oven controller with a handful of inexpensive, through-hole parts. The…

Learn how to put together your own toaster oven controller with a handful of inexpensive, through-hole parts. The emphasis is on safety, low price, and minimal modification of the toaster oven.

Part three of a series of articles on building a robot that can follow lines or walls and avoid obstacles!

Part three of a series of articles on building a robot that can follow lines or walls and avoid obstacles!

Part two of a series of articles on building a robot that can follow lines or walls and avoid obstacles! This time we'll…

Part two of a series of articles on building a robot that can follow lines or walls and avoid obstacles! This time we'll be covering PCB design.

This article explains how to install PyVisa and MatPlotlib for Python. PyVisa connects a computer to the measurement…

This article explains how to install PyVisa and MatPlotlib for Python. PyVisa connects a computer to the measurement instruments and matplotlib helps to visualize the data collected from these instruments.

An inexpensive PICAXE microcontroller makes it easy to read a temperature sensor, compare the temperature to a setpoint,…

An inexpensive PICAXE microcontroller makes it easy to read a temperature sensor, compare the temperature to a setpoint, and turn a heater or cooler circuit on or off.

Use a WS2812 RGB LED strip to visualize the pose of an MPU-6050 6-degree-of-freedom IMU in three dimensional space.

Use a WS2812 RGB LED strip to visualize the pose of an MPU-6050 6-degree-of-freedom IMU in three dimensional space.

Control a fan based on the current temperature with a Raspberry Pi!

Control a fan based on the current temperature with a Raspberry Pi!

This article demonstrates how to use the built-in die temperature sensor on the nRF51. The die temperature is not the…

This article demonstrates how to use the built-in die temperature sensor on the nRF51. The die temperature is not the same as ambient temperature, but can be calibrated to ambient temperature by using a correction factor.

Teaming up a PICAXE µC, a DS1307 real time clock module, and an LCD117 serial adapter with a liquid crystal display is…

Teaming up a PICAXE µC, a DS1307 real time clock module, and an LCD117 serial adapter with a liquid crystal display is a fun, educational way to assemble your own date and time demo.

Create a wireless "relative comfort" light bar thermometer by broadcasting temperature data across multiple ESP8266…

Create a wireless "relative comfort" light bar thermometer by broadcasting temperature data across multiple ESP8266 modules running NodeMCU using MQTT.

Using an LCD increases the versatility of any microcontroller by displaying data outputs and memory contents. This serial…

Using an LCD increases the versatility of any microcontroller by displaying data outputs and memory contents. This serial adapter uses only one I/O.

MQ Telemetry Transport (MQTT) is a popular low-overhead messaging protocol used by many IoT devices to communicate. This…

MQ Telemetry Transport (MQTT) is a popular low-overhead messaging protocol used by many IoT devices to communicate. This tutorial will show the user how to to set up a basic MQTT network using Python on his or her computer and an ESP8266 running the NodeMCU firmware.

Adding variable speed control and battery monitoring to a Power Wheels truck!

Adding variable speed control and battery monitoring to a Power Wheels truck!

Building on skills developed in the introductory KiCad tutorial, this article will focus on creating custom parts and…

Building on skills developed in the introductory KiCad tutorial, this article will focus on creating custom parts and adding them to a local library, expanding the default libraries to include community repositories, and contributing parts back into the open source ecosystem. The end product will be a MAX31855 K-type thermocouple amplifier which can be used for a huge array of temperature sensing projects.

To control high-voltage or high-power circuits with an Arduino, you have to isolate them from the Arduino with a relay.…

To control high-voltage or high-power circuits with an Arduino, you have to isolate them from the Arduino with a relay. Here's how!

Controlling a motor with an Arduino is relatively easy. In addition to simply spinning the motor, you can control the…

Controlling a motor with an Arduino is relatively easy. In addition to simply spinning the motor, you can control the position of the motor shaft if the motor has a rotary encoder.

Communicating serially with the Arduino is easy! Here, we'll show how to take some temperature measurements and then send…

Communicating serially with the Arduino is easy! Here, we'll show how to take some temperature measurements and then send the measurements over the serial link.