Ultrasonic ranger circuit
#ultrasonic
#distance measurement
#HC-SR04
#sensor
#microcontroller
#Arduino
#obstacle detection
#ranging
#echo
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Ultrasonic switch
A new type of remote control operates based on ultrasonic sound. The transmitter section of the circuit is constructed around IC1 (NE 555), configured as an astable multivibrator functioning at 40 kHz. The output from IC1 is amplified by a...
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...
arduino leds in parallel switched with NPN transistors
It is noted that the LEDs are not configured in parallel with the transistor. If they were, the LEDs would illuminate when the transistor is off. Instead, the LEDs are connected in parallel before entering the transistor. The transistor only...
arduino clock
The Arduino displays the time and date on an optional LCD and in the Arduino IDE serial monitor window. A PCF8563 real-time clock (RTC) integrated circuit (IC) is utilized to generate the time and date. The time and date can...
Multitasking Pins
It is entirely logical that low-cost miniature microcontrollers have fewer pins than their larger counterparts, sometimes too few. Consideration has been given to how to economize on pins by making them perform multiple functions. One approach is to exploit the...
ultrasonic atomizer circuit
Ultrasonic atomizer circuit: How to generate an atomized water mist using ultrasonic sound waves.
The ultrasonic atomizer circuit is designed to produce a fine mist of water by utilizing ultrasonic sound waves. This process involves the conversion of electrical energy into...
Arduino Actuators
Agy utilized the Lilypad Arduino and LEDs for the first time in a textile project called Blinky Bike Bag, merging her skills in fabric manipulation with electronics. The bike bag is constructed from umbrella material to ensure waterproofing and incorporates...
Arduino Audio Output
Generate sound or output analog voltages with an Arduino. This guide will demonstrate how to set up a basic digital-to-analog converter.
To create a digital-to-analog converter (DAC) using an Arduino, one can utilize the Pulse Width Modulation (PWM) feature available on...
Microcontroller Voltmeter / Ammeter with LCD
The rectifier bridge voltage is determined by the U2 element; refer to its datasheet for the maximum voltage specifications. The minimum voltage at this pin should not fall below approximately 9V, or 6.5V if low-dropout type U2 and U3 voltage...