Simple Timer

Archiver

Hello All,

I am working on making A simple timer for my kids Power Wheel. I am hooking NEON
tubes to it. I want it to work like this, When the peddle is pushed the NEON
will come on, when released the timer will start counting for a set time ( 5 -
10 Min ) then turn off the NEON. The NEON runs on +12V.

I was thinking of using a LM555 but I do not know if I want to make a MONOSTABLE
or ASTABLE or would I use a different type.

Thanks
A. Conti


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Archiver

FWIW... Here's a power-wheels project I did over the summer:
http://www.karas.net/images/jeep/jeep_done_rearquarter.jpg
(other images in that same directory)

This page might help you get started.
http://www.kpsec.freeuk.com/projects/timer.htm

The nice thing about the 555 is its desire for a negative going pulse,
so it will be very easy to trigger the timer to start when the "gas" is
released.

If your power wheels is a 2-speed model, make sure you take a trigger
from the wheel that is always powered.

On Wed, 2002-11-20 at 20:25, Anthony Conti wrote:
> Hello All,
>
> I am working on making A simple timer for my kids Power Wheel. I am hooking
NEON tubes to it. I want it to work like this, When the peddle is pushed the
NEON will come on, when released the timer will start counting for a set time (
5 - 10 Min ) then turn off the NEON. The NEON runs on +12V.
>
> I was thinking of using a LM555 but I do not know if I want to make a
MONOSTABLE or ASTABLE or would I use a different type.

--
Brian <stamp@k...>