Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Making a countdown timer

Status
Not open for further replies.

Nisushie

Newbie level 5
Joined
May 3, 2011
Messages
8
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,347
Hi I am very new with this. So if I made a mistake anywhere please forgive me.

I need help with a project that I am working on. I am quite new to electrical and electronics so there are lots of things that I may not know.

This is the scenario. A carpark with 1 hour limit. Meaning, the car parks into a lot. Sensor detects a car there. Activate timer to countdown 1 hour to 0. Then send a signal to a screen to show that the car already reach the 1 hour limit.

I need to know, what kind of timer is best used for this and how to connect.
 

eklikeroomys

Full Member level 3
Joined
Oct 11, 2010
Messages
151
Helped
40
Reputation
80
Reaction score
38
Trophy points
1,308
Location
South Africa
Activity points
2,144
Using some kind of microcontroller will probably be best since it would need to take interrupt inputs from the sensors
 

Nisushie

Newbie level 5
Joined
May 3, 2011
Messages
8
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,347
hmm I can vaguely remember.. Atmel 8051 microcontroller..
eklikeroomys, can you tell me a few tips if i were to use micro controllers?
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top