ultrasonic range meter
#ultrasonic
#distance measurement
#sensor
#range finder
#HC-SR04
#microcontroller
#Arduino
#measurement
#electronics
#circuit
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Improved Arduino TV-B-Gone
The TV-B-Gone is a compact infrared remote capable of turning off nearly any television. Previously, the TV-B-Gone software was adapted for use with the Arduino platform. For further details regarding this adaptation and its functionality, refer to the earlier post...
measurement conductance cell constant
A small transmitter board interfaces with a microcontroller and conductivity probe to measure liquid conductance and conductivity. Precise equations and measurements are provided for this microcontroller-controlled conductivity meter.
The described circuit consists of a compact transmitter board that serves as an...
Arduino Blink
To construct the circuit, connect a 220-ohm resistor to pin 13. Next, connect the longer leg of an LED (the positive leg, known as the anode) to the resistor. The shorter leg (the negative leg, referred to as the cathode)...
Arduino Ping
The Ping is an ultrasonic range finder from Parallax. It detects the distance of the closest object in front of the sensor (from 2 cm up to 3 meters). It operates by emitting a burst of ultrasound and listening for...
How to Design Battery Charger Applications that Require External Microcontrollers and Related System-Level Issues
Application note on designing linear and switch-mode (switching DC-DC converter current source) battery charger applications that require external microcontrollers and related system-level issues for notebook computers.
The application note provides guidance on the design of both linear and switching DC-DC converter...
Add a sensor to a board and measure something with it
This week's plan is to build a device that warns of the potential for a knockdown, which is the process by which an over-canvassed ship is laid over on her beam-ends. The risk of sinking is high during this event,...
Ultrasonic Proximity Detector
The circuit in Figures 1a and 1b illustrates the schematics of an ultrasonic proximity detector with a maximum detection range of approximately 6 feet. When an object passes in front of the ultrasonic transceiver board, the contacts of relay K1...
Dog Repellent Circuit
The electronic dog repellent circuit diagram below is a high-output ultrasonic transmitter primarily intended to act as a dog and cat repeller.
The electronic dog repellent circuit utilizes a high-frequency ultrasonic transmitter to emit sound waves that are unpleasant to dogs...
Talking Yoda head
The talking Yoda head consists of a Yoda mask and a microcontroller system to achieve the desired operation/effect. The basic operation of the project was specified as follows: The head was to be placed inside a closed box. Upon opening...