15 channel Vu meter circuit with peak hold or peak hold feature. It can be done with PIC16F1508, PIC16F1509, microcontrollers. I powered the PIC outputs with mosfet and drove strip led. You can use cob led modules or 12v lamps instead of strip led. You can also use 220V lamp with MOC3020-TRIAC module. I couldn’t…
Arcade Joystick is a DIY USB keyboard encoder made with PIC18F24K50 microcontroller. It allows you to create a USB arcade stick for example or use it in a special MAME cabinet. It has easy, cheap and simple hardware to build yourself. Features of Arcade Joystick Circuit One additional input for autofire button. The speed of…
The password electronic lock circuit PIC16F628A can store up to 128 users’ passwords. Users can change their passwords whenever they want. PIC16F628 and external Eeprom 24c08 are used to store these passwords. 2×16 LCD is used to display system messages. A piezoelectric buzzer that makes “beep sounds” is used to indicate the number pressed and…
The aim is to make a simple and at the same time effective device that will count the number of people entering and exiting rooms with a single entrance door. The detection was carried out with Sharp GP2Y0A21YK sensors, based on the use of infrared distance sensors for security systems. These sensors work at short…
A project using RFID-RC522 module and PIC16F628A to perform access control with RFID Key cards. Adapted from Arduino “AcessControl” software. The PIC16F628A software is written in CCS C to work without SPI hardware. The RFID-RC522 module performs the entire radio frequency communication process (13.56 Mhz) with RFID tags. An RFID tag is an electronic tag…
Voltage adjustment from 0.1V to 25V with “+” and “-” buttons; When the “+” and “-” buttons are held down, a slow change begins at 0.1V, after 2 seconds the change accelerates. Min. for 3A version of current limit. Min. for 150mA and 10A version. Setting it to 500mA; The current mode is selected by…
I tested another combination lock circuit. The function of the system is to receive the signals from the infrared receiver and compare them with the values previously stored in the EEprom of the PIC12F675. After receiving the 4-digit password, it compares the lock activation output and outputs. To set the password, simply press the ‘Prog’…
Automation project using PIC12F675 Microcontroller automatically discharges water with Electrovalve. Infrared light reflection method is used to detect the presence of a person or object. It can be used in automatic urinal flushing or different automation control projects, scenarios. It is important to isolate the infrared receiver and infrared transmitter led from each other. The…
It is a very interesting circuit compared to the combination lock circuits shared before. The heart of the circuit is the button, keypad, etc. for PIC12F675 microcontroller password entry. not used. The system works according to the impacts that occur with the impact. The piezo buzzer converts the magnetic vibrations generated by the beats into…
Flash IC is an audio file playback circuit prepared for high-capacity spi flash memory ICs, known as Bios ICs. The controller of the system is the PIC16F628 microcontroller, the spi flash integrated 25Q64 used for memory was removed from an old computer motherboard. I made the circuit application with 25Q32BV, I removed these integrated from…