This project brief describes how to build and use an Arduino-compatible interface board that reads an on-board pressure sensor and reports the measurement over…
This project brief describes how to build and use an Arduino-compatible interface board that reads an on-board pressure sensor and reports the measurement over an RS-485 network.
This project brief describes how to build and use an Arduino-compatible interface board that reads a 2-axis thumb…
This project brief describes how to build and use an Arduino-compatible interface board that reads a 2-axis thumb joystick and transmits its position over an RS-485 network.
This project brief describes how to build a compact, single-supply preamplifier module that converts the output of an…
This project brief describes how to build a compact, single-supply preamplifier module that converts the output of an electret microphone into a usable line-level audio signal.
This project brief describes how to build and use an Arduino-compatible board that reads a linear Hall-effect sensor and…
This project brief describes how to build and use an Arduino-compatible board that reads a linear Hall-effect sensor and reports the measurement over an RS-485 bus.
Learn how to construct a robust DMOS-based board featuring mute and standby controls. It easily drives 4 or 8 Ω loads…
Learn how to construct a robust DMOS-based board featuring mute and standby controls. It easily drives 4 or 8 Ω loads for your next custom stereo or speaker project.
This project brief describes how to build a compact dual-channel power amplifier module that delivers 38 W per channel…
This project brief describes how to build a compact dual-channel power amplifier module that delivers 38 W per channel into 4-ohm speakers using STMicroelectronics' STA540 audio amplifier IC.
Build a low-noise, 32-bit delta-sigma ADC board designed around the ADS1262. This 10-channel design features integrated…
Build a low-noise, 32-bit delta-sigma ADC board designed around the ADS1262. This 10-channel design features integrated signal conditioning for RTDs, thermocouples, and strain gauges.
Build an ultra-low-noise preamplifier with a JFE150 JFET and OPA202 op-amp, perfect for high-impedance sensors,…
Build an ultra-low-noise preamplifier with a JFE150 JFET and OPA202 op-amp, perfect for high-impedance sensors, hydrophones, guitar pickups, microphones, and turntables.
This project brief explains how to construct a PCB-based audio-processing platform with an ATmega328 microcontroller. A…
This project brief explains how to construct a PCB-based audio-processing platform with an ATmega328 microcontroller. A link to Arduino code for creating an audio echo is also provided.
This project brief provides the instructions for building a weight-sensitive LED lamp with an Arduino Uno and a handful…
This project brief provides the instructions for building a weight-sensitive LED lamp with an Arduino Uno and a handful of commercially available parts.
To complete this project, we add backlight control and temperature-sensing functionality to the clock we built in the…
To complete this project, we add backlight control and temperature-sensing functionality to the clock we built in the previous installments.
We continue our design of a clock that uses analog ammeters to display time and temperature. In this installment, we…
We continue our design of a clock that uses analog ammeters to display time and temperature. In this installment, we examine the second of the two circuits that enable the timekeeping function.
This project turns old-school analog ammeters into a working clock that can also display the ambient temperature.
This project turns old-school analog ammeters into a working clock that can also display the ambient temperature.
In Part 2 of this two-part series, we turn our hardware assembly into a functioning soundboard by adding the necessary…
In Part 2 of this two-part series, we turn our hardware assembly into a functioning soundboard by adding the necessary code in Arduino IDE and uploading soundbites.
Learn how to turn an ATmega328 microcontroller and an assortment of readily available parts into a dedicated hardware soundboard.
Learn how to turn an ATmega328 microcontroller and an assortment of readily available parts into a dedicated hardware soundboard.
Follow my upgrade of a handheld game controller as I add a new 1.8-inch color LCD for animated graphics and an…
Follow my upgrade of a handheld game controller as I add a new 1.8-inch color LCD for animated graphics and an accelerometer module for motion control input.
In this Radio Shack Classic Circuits Remix, we add modern microcontroller functionality to the vintage Electronic Timer…
In this Radio Shack Classic Circuits Remix, we add modern microcontroller functionality to the vintage Electronic Timer project for the Science Fair 65-in-1 kit.
In this project, which uses the Arduino IDE, we create and demonstrate a digital drawing pad using an ESP32-based e-paper…
In this project, which uses the Arduino IDE, we create and demonstrate a digital drawing pad using an ESP32-based e-paper display dev board, rotary encoders for drawing control, and an accelerometer for shake detection to initiate an erase.
In this project article, we design a handheld gaming console with wireless multiplayer functionality using ESP8266…
In this project article, we design a handheld gaming console with wireless multiplayer functionality using ESP8266 microcontrollers. We then program a game for it with the Arduino IDE.
In this project, we’ll use a Raspberry Pi Pico to build an adjustable clock with an LED display. We’ll then integrate…
In this project, we’ll use a Raspberry Pi Pico to build an adjustable clock with an LED display. We’ll then integrate the clock with a Radio Shack Science Fair Microcomputer Trainer programmed to function as a 7-bit binary counter.
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