how to make a simple door alarm

A simple door alarm for my shop. this one chimes for 6-8 sec. but you can vary the "on time" by increasing the micro farad rating of your electrolytic capacior. i have a 670 uf on it and that will give you 6-8 sec. schematic can be e-mailed to you

Category:

Science & Technology

Tags:

• door
• alarm;
• simple
• electronic
• alarm

[xXsilentkillXxX]

Simple?



[adamlumpkins2000]

@xXsilentkillXxX lol whats not simple

[adamlumpkins2000]

But you might find it works for you with the resistor.

[adamlumpkins2000]

It has been close to a year and the battery is still strong and I go through that door a lot on the weekend. If I were you I wouldn't add that resistor

[hyperscitic92a]

Schematic please?

Thanks!

[adamlumpkins2000]

@hyperscitic92a i will add it in to the viedo at the end

[actionsport5]

doesnt the noise scare you too?

[vasavarox]

plz send me the schematic on prakash25dev@yahoo.co.in

thank you

[sixflagsbelgium]

mcdonalds sound ;D

[joelisaac9]

fuck your life not simple

[h09bakerc]

schematic please .

[shotgunrichards]

i may use it on the house

[TheMrpanda54]

so that buzzer wont startle and you burn yourself?

[ksas58]

can you post a schematic of the wiring plz as i am not sure which wires go to the cap