Summary of ULTRASONIC CAT & DOG REPELLER CIRCUIT PIC16F627
This article shares resources for an ultrasonic cat and dog repeller project using a PIC16F627 microcontroller. It includes ASM source, HEX, Eagle PCB and board files. The device emits varying ultrasonic frequencies via a piezo driven by four power transistors, with selectable fast or slow frequency transitions and an optional key (switch) for operation. When programming the PIC16F627, the internal oscillator fuse must be selected.
Parts used in the Ultrasonic Cat & Dog Repeller Circuit:
- PIC16F627 microcontroller
- Piezo transducer
- Four power transistors
- Push button or key (operation switch)
- PCB (Eagle board files provided)
- Power supply (battery or DC source)
- Supporting passive components (resistors, capacitors)
- Connector pins and wiring
cat, dog repeller circuit’s all shared resources (asm hex + eagle pcb. Brd) Thanks to those who contributed People NOTE: When programming the PIC16F627 internal oscillator fuse should be selected. In order to prevent pests from entering the inside… Electronics Projects, Ultrasonic Cat & Dog Repeller Circuit PIC16F627 “microchip projects, microcontroller projects,
cat, dog repeller circuit’s all shared resources (asm hex + eagle pcb. Brd) Thanks to those who contributed People
NOTE: When programming the PIC16F627 internal oscillator fuse should be selected.
In order to prevent pests from entering the inside of the house, etc. According to them we wanted to make a very noisy. Trial tremendously effective on dogs and cats in my circuit, I saw, she seemed. We can not experiment on mice, we did not found a mouse 🙂 but the project did not prepare them thinking. All of these animals they like, changing values in all available frequency ultrasonic sound. This circuit, with four power transistors to drive the piezo randomly in different ways all these frequencies can give. Operation can also intrigues with the key. Fast or slow frequency crossover transitions can be achieved. http://endtas.com/robot/modules.php?name=News&new_topic=6 Prepared by: Ozkal Özsoy
CAT & DOG REPELLER CIRCUIT DIAGRAM
Cat, Dog Repeller Circuit pcb pic assembly source asm code files
FILE DOWNLOAD LINK LIST (in TXT format): LINKS-3770.zip
Source: ULTRASONIC CAT & DOG REPELLER CIRCUIT PIC16F627
- What microcontroller is used in this project?
The project uses a PIC16F627 microcontroller. - Do I need to set any programming fuse for the PIC16F627?
Yes, the internal oscillator fuse should be selected when programming the PIC16F627. - What generates the ultrasonic sound in the circuit?
A piezo transducer driven by four power transistors generates the ultrasonic sound. - Can the circuit produce different ultrasonic frequencies?
Yes, the circuit changes values across available frequencies and can produce random variations. - Is there a way to change how quickly frequencies switch?
Yes, fast or slow frequency crossover transitions can be achieved and operation can be controlled with a key. - Are PCB and source files available for this project?
Yes, ASM source, HEX, Eagle PCB and board files are shared as downloadable resources. - How many power transistors are used to drive the piezo?
Four power transistors are used to drive the piezo. - Was the circuit tested on mice according to the article?
No, the article states they did not experiment on mice because they could not find any.

