ELECTRONIC WATCHDOG
Order Code: K2655
A circuit that produces a natural sounding barking dog with a sensitive "ear" to everything that comes near it. It is a faithful watchdog, which never sleeps and never has to be taken out for a walk.
Specifications
- power supply: 2 x 8V AC or 9 - 12V DC / 500mA
- choice of two different "dog sounds"
- reacts to surrounding noise with adjustable sensitivity
- speaker output: 2W at 4ohm
- PCB dimensions: 5.6 x 3"
Files
- resistor colour code
- Velleman Projects Catalogs: Kits
- Velleman Projects Catalogs: Modules & instruments
- Engineering note- FAQ: Frequently asked questions about LEDs and how to use them, power LEDs do's and dont's, open collector outputs and relay contacts and how to use.
- Overview of Velleman modules that are equal to D.I.Y Kits: This sheet is usefull when you want to now witch modules you could find in the do-it-yourself range of Velleman Kits and minikits.
- connection diagram using a transformer
- Parts list: English assembly instructions through illustrations, pictures, etc.
- Assembly instructions: Written multilingual manual explaining how to build the kit
Stock Info
- Inner carton:
- Outer Carton: 20
- EAN Barcode: 5410329026554
- UPC Barcode: 836479006935
- Packaging: Box (Carton)
Extra information
- Hints
- If bark frequency is to low (very slow bark) reduce de value of C3 (ex. 1500pF).
- If microphone is to sensitive, lower the value of R20 and increase the value of R2.
- If there is a metallic background noise, put a 33pF capacitor from pin 7 of IC3 to ground.