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Gareth

Question for the electrickery wizards

I have a question for the electrickery wizards.

I am after a bespoke battery powered countdown clock, but rather than an alarm on it I would like an LED traffic light system.

We have a situation at the music house accoustic seesions where a musician will stop playing and ask how much longer they have got for their set ..... and it is become way too regular.

It was suggested that a programmable countdown clock would fit the bill, but an alarm would be too much of a distraction, so I suggested a traffic light system.

So our required spec is:

Maximum of three buttons:

On/Off

Scroll up minute programme from 1 through 59 minutes

Countdown Start/ Stop .

Powered by 2 AA batteries with red digital numerals

Programmable from 59 minutes down to 5 minute with a Constant green LED.

From 5 minutes down to zero slow flashing Amber LED

Zero Constant Red LED.

Does anyone know where I could get such a thing, or have it made?
Slipster

Gareth
It would be more in line with th electronics boys such as

http://www.hobbyengineering.com/H1253.html

Im sure if you google for long enough you would find something, failing that if you have a company in your are that repairs printed circuit boards and electronic drives they would know.

Hope this helps
goodlife

hi i know nothing about electronics but these people do

http://www.electronicspoint.com/

or google electronics forum quite a few out there
Jonty

That's a very exacting specification for 'wish list' sounds almost like a shoping list - Why 2AA batteries specifically  and are red numerals a design must?
Gareth

AA batteries are not a set in stone requirement;  PP3 batteries are also an option. but it must be battery powered for when we do some of the remote acoustic out door gigs that do not have a mains power source


We would prefer red numerals (or even green) as they wouldn't require a distracting back light to illuminate them.
Justme

Whats wrong with a large clock with big sweeping minuet & second hands?

Or a manual 3 light system.

Green = keep going
Orange = ending soon
Red = your done so get off

As its manual if they are pants they get binned early but if they are good they get extra time.
Jonty

what you need is a clapometer  
Gareth

Justme wrote:
Whats wrong with a large clock with big sweeping minuet & second hands?

Or a manual 3 light system.

Green = keep going
Orange = ending soon
Red = your done so get off

As its manual if they are pants they get binned early but if they are good they get extra time.


We have already got a big clock with hands on ..... but after a few beers it all gets confusing.

We have thought about the the manual 3 light system, but sometimes we present the musicians from on the stage next to them or from a distance away via a radio mic ... and we are beginning to use this more and more.

Green = keep going
Orange = ending soon
Red = your done so get off

That's exactly what we want but in an easily programmable, portable self contained unit. ....... I now manage 8 local bands, and 2 local soloists across several venues where facilities vary from an all singing all dancing sound desks with more buttons and sliders than I care to count to absolutely nothing: not even a 13 amp 240 volt socket.
Superhands

Hi Gareth.

You could build this very simply using an Arduino micro-controller. You can buy one for about 15 and program it with a PC. Connect up your LEDs and a reset switch and bob's your aunties live in lover. Once it is programmed, stick it in a box and it will run forever off a 9v battery.

You could even put in a small relay to kill the mic after time up lol!

I am sure there will be a hackspace nearby full of people who would be glad to build you one as a project - nearest one to you is my good friends at Northackton. See if you can have a word with Martin - he might be able to build one for you if commissioned.

Arduino at Oomlout: http://oomlout.co.uk/
Hackerspaces: http://hackerspaces.org/wiki/List_of_Hacker_Spaces

It's also the sort of thing I would love to have a crack at, given the time...

Let me know if I can help further.
Rick Harris

This is a project made for a microprocessor.

As a - I guess - none electronic person I would look at the Picaxe system - Built in timer function, programmed in simple to use BASIC and cost about 2 for an 08M which should do the trick with 3 LEDs green, orange and red.

[url]http://www.picaxe.com [/url]

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