led interfacing with pic16f877a primer
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10 Step LED Circuit
Each time switch S1 is closed the count on the CD4017 advances by 1 step and the corresponding LED turns on. When the maximum count plus 1 is reached for each circuit the cycle is restarted and repeats.
The circuit utilizes...
vu meter circuit
The NL3ASD schematic pages provide the schematics for a LED VU meter utilizing the UAA180 integrated circuit.
The NL3ASD schematic pages feature a comprehensive design for a LED VU meter that employs the UAA180 IC, known for its audio signal processing...
PIC Stepper Motor Tester
Determining the identification of drive wires on a unipolar stepper motor, which is commonly found in surplus or salvaged equipment. The platform utilized is a PIC16F877A microcontroller programmed with BoostC, interfaced via RS232 to a PC running a terminal program....
Flashing Led Controller
The LED with an integrated flasher is connected in series with the base-emitter junction of transistor T1. Consequently, the load connected to K2 is switched on and off in sync with the flash rate. This load can be a relay...
High-intensity LED Warning Flasher
This circuit was designed as a warning flasher to alert road users to dangerous situations in the dark. Alternatively, it can act as a bicycle light.
The circuit operates by utilizing a light-emitting diode (LED) as the primary visual alerting component....
1 5 hour lamp fader sunset lamp
The sunset lamp activates at full brightness and gradually dims over a duration of 1.5 hours, remaining off until the power is reset.
The sunset lamp circuit is designed to simulate the natural fading of sunlight, providing a calming effect as...
MICROCONTROLLER BASED AUTOMATIC ROOM LIGHT CONTROLLER
This project involves an automatic room light controller with a bidirectional visitor counter using a microcontroller. It is designed to manage room lighting and accurately count the number of individuals present. When a person enters the room, the counter increments...
White LED Flood Lamp circuit
This white LED light illuminates the porch with cool white light. The circuit features a simple and energy-saving design. Its current consumption is practical.
The white LED light circuit is designed to provide efficient illumination while minimizing energy usage. The primary...
DIAL ALARM-1
This is the lowest cost dialing alarm on the market and shows what can be done with an 8-pin microcontroller. The complete circuit is shown below. You cannot see all the features of this project by looking at the circuit...