Build an LED Bargraph Optical Tachometer
#LED bargraph
#optical tachometer
#RPM measurement
#sensor
#display
#rotational speed
#light sensing
#DIY instrumentation
#speed measurement
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Gate automatic lamp circuit
The circuit utilizes multiple integrated circuits to form an automatic lighting device that is activated by door and window sensors. It includes CD4093 digital integrated circuits, a relay, and a power supply circuit. The system typically remains closed when a...
5x7 DISPLAY
You must be able to recognise components such as capacitors, diodes, zeners, transistors and resistors to build a 5x7 Display project. This information is covered in our BASIC ELECTRONICS course and a complete set of circuit symbols can be found...
Game-scoring Display ScreenCircuit
The game-scoring display screen circuit diagram is depicted in the image above. The circuit consists of an add/subtract scoring input circuit, an add/subtract scoring circuit, a counting-decoding display circuit, and a reset circuit.
The game-scoring display circuit is designed to facilitate...
Light sensing circuit diagram
In the silicon-controlled trigger circuit, a cadmium sulfide cell is connected to a relaxation oscillator, which serves as a sensor to activate a blinking light in a darkroom. This setup causes a speaker to emit a warning sound of Ka,...
The alarm circuit diagram for safety box and other metal objects
When an individual touches the safety box or other protected metal objects, the sensor circuit generates a pulse to the alarm circuit. The positive edge of this pulse activates the semiconductor and thyristor flash GE, subsequently triggering the camera to...
Bubble display proof of concept
Some time ago, a captivating water display showcased by Jeep at conventions caught attention. The design appeared straightforward, prompting the decision to create a similar project. Instead of utilizing falling water, the concept involves using air bubbles that rise in...
Token number display
Introduction: Token Display Systems are ideal for banks, airports, public dealing offices, hospitals, doctors' clinics, restaurants, and other locations where people must wait in line. These systems allow customers to wait comfortably without standing in line; they only need to...
Sensor-Activated Relay Pulser Circuit
A sensor activates transistor Q1 to turn on the low-frequency 555 oscillator, which generates pulses to control LAMP II. The sensor may respond to variations in light or temperature. Either resistor RA or RB can function as the sensor, depending...
Scoobas Solution Sensing Tactic
This document serves multiple purposes, primarily to document the methods employed by a Scooba robot to detect: a) the presence of an acceptable cleaning solution being delivered to its pump, and b) the excess presence of used solution collected off...