548Views3Replies

Author Options:

Circuit with Thermistor and buzzer? Answered

How do I build a simple ciruit that will cause a buzzing sound when the temperature rapidily increases?

3 Replies

user
robot1398 (author)2012-01-06

try to make a fire alarm here is the code whivh you can use with picaxe 08m2

main: readadc 1,b0
if bi=> then mainn
goto main

mainn: high 2
wait 60
low 2
goto main

fill the b1=> or< with the value the sensor gives when the temprature is high

you caN do thiS by the following code

main: readadc 1,b0
debug
pause 1000
goto main

Select as Best AnswerUndo Best Answer

user
NachoMahma (author)2010-04-19

. Googling "rate+of+change" +circuit turns up some interesting stuff.

Select as Best AnswerUndo Best Answer

user
lemonie (author)2010-04-19

By how much? (in degrees C/F)

L

Select as Best AnswerUndo Best Answer