PIC Microcontroller-Based Electronic Lock
#PIC microcontroller
#electronic lock
#security
#keypad
#access control
#embedded systems
#digital lock
#password protection
#microcontroller programming
#hardware security
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Electronic Lockers
This circuit is an electronic locker that operates using a combination of switches, functioning based on a specific code. The switch matrix is located on the locker door and consists of 16 switches arranged in a 4x4 grid, totaling eight...
Keypad-Operated Switch No.2
This is a simplified version of the Universal Keypad-Operated Switch. The design has been modified to reduce circuit complexity and the number of components required. As a result, the code is somewhat less secure; however, it remains adequate for many...
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The servo controller operates by interfacing a PIC microcontroller with a servo motor, enabling...
buzzer circuit pic microcontroller
A buzzer circuit utilizes a PIC microcontroller to drive a piezo buzzer. The microcontroller is a low-power processor that is ideal for portable and compact devices where battery conservation is essential.
The buzzer circuit employs a PIC microcontroller, which serves as...
Digital lock 4
The digital lock circuit consists of a timing trigger circuit, a trick lock circuit, a sound and alarm circuit, and a control implementation circuit, as illustrated in Figure 3-101. The timing trigger circuit is made up of transistors V1 and...
Infra/radio remote control encoder/decoder with PIC
This is a general-purpose remote control project utilizing programmable PIC microcontrollers. Schematics are provided for using infrared (IR) or radio frequency (RF) media. If microcontroller programming is unfamiliar, fixed encoder and decoder integrated circuits can be employed instead. Well-known integrated...
Alarm Control Electronic Keypad Project
The integrated circuit (IC) is a quad 2-input "AND" gate, specifically a CMOS 4081. These gates output a HIGH signal only when both inputs are HIGH. When the key connected to pin E is pressed, current flows through resistor R1...
0-24v digital variable power supply circuit
The following circuit diagram depicts a variable power supply controlled by a PIC microcontroller. An LCD display is utilized to show the actual output current and voltage values. This digital power supply incorporates a push-button switch to adjust the output...