In this hands-on project, we will update a 1980s version of a one-shot (monostable multivibrator) circuit by giving it a modern, colorful output while also…
In this hands-on project, we will update a 1980s version of a one-shot (monostable multivibrator) circuit by giving it a modern, colorful output while also examining the circuit's operation.
This article presents the design of an unweighted (Z-weighted) audio filter with a flat frequency response from 20 Hz to…
This article presents the design of an unweighted (Z-weighted) audio filter with a flat frequency response from 20 Hz to 20 kHz for the measurement of audio noise.
Let’s modernize a circuit from a Science Fair 150-in-1 Electronic Project kit using a solderless breadboard, new…
Let’s modernize a circuit from a Science Fair 150-in-1 Electronic Project kit using a solderless breadboard, new electronic components, online EDA tools, and an M5Stack Core microcontroller.
This project demonstrates the design and operation of a root-mean-squared (RMS) detector for inclusion in a wideband…
This project demonstrates the design and operation of a root-mean-squared (RMS) detector for inclusion in a wideband voltmeter. The RMS detector is useful for measuring certain signal types, including noise, since it provides an indication of the energy in a signal.
This project will explain how to develop a system to measure magnetic field emissions at frequencies up to 150 kHz from…
This project will explain how to develop a system to measure magnetic field emissions at frequencies up to 150 kHz from high-current power cables without cutting or disturbing the cable.
This article demonstrates the creation of an inductive switch cabinet lock that can detect the movement of a conductive…
This article demonstrates the creation of an inductive switch cabinet lock that can detect the movement of a conductive target. The purpose is to create a door that cannot be opened without triggering an alarm.
In this article, we’ll discuss the hardware design for a robotics PCB, and we’ll write firmware for controlling two DC motors.
In this article, we’ll discuss the hardware design for a robotics PCB, and we’ll write firmware for controlling two DC motors.
We’ll discuss some important layout and manufacturing concepts as we look at the PCB for the Robot Control Board.
We’ll discuss some important layout and manufacturing concepts as we look at the PCB for the Robot Control Board.
In spite of their convenience, the cost of solder paste stencils has prevented many hobbyists from using them. But the…
In spite of their convenience, the cost of solder paste stencils has prevented many hobbyists from using them. But the use of polyimide film has brought the prices within reach... if you know how and where to get them.
Over-voltage and over-current protection circuit for use with the C-BISCUIT platform's main computer, the Wandboard.
Over-voltage and over-current protection circuit for use with the C-BISCUIT platform's main computer, the Wandboard.
An FPGA is a crucial tool for many DSP and embedded systems engineers. However, the learning curve when getting started…
An FPGA is a crucial tool for many DSP and embedded systems engineers. However, the learning curve when getting started can be fairly steep. This project introduces the Quartus II and ModelSim software suites as well as a background on FPGA design flow for system on chip development. The development board used was a Terasic DE1-SoC, which has the Altera Cyclone V SoC chip. This IC contains an FPGA and an integrated ARM Cortex A9 as a hard processor system.
A PCB for a Wi-Fi communicator using a PICAXE 08M2 and an ESP-01 module driven by interactive code makes a handy setup…
A PCB for a Wi-Fi communicator using a PICAXE 08M2 and an ESP-01 module driven by interactive code makes a handy setup for data collection and IoT reporting.
What linear voltage regulator circuits lack in efficiency, they make up in simplicity and low noise. Here's a scheme for…
What linear voltage regulator circuits lack in efficiency, they make up in simplicity and low noise. Here's a scheme for 9 voltages from 2.5V to 15V on the same PCB design.
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.
Use a program like Kicad and a few cheap or common supplies to fabricate your own PCBs at home. Breadboarding is fine for…
Use a program like Kicad and a few cheap or common supplies to fabricate your own PCBs at home. Breadboarding is fine for testing a circuit, but it never looks good to have fifty wires coming out of a circuit.
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.