Egg timer?

It's a perfect app for a Picaxe 08M.

Tom

Thanks but I was thinking in terms of a 5 cents transistor, or to over kill in prescion, an IC quad OP, with chinzy components. Ken

That would be a 4060 counter circuit where your 4-5-6 pushbuttons latch select one of three outputs to activate the voice annunciator chip via a power up/power down circuit, and when this is finished, it powers down to zero load and resets the counter/pushbutton latch logic. A single AA power source and readily available components means you might need a little boost switcher, with electronic shutdown control, to produce a suitable V+ for the annunciator and output amp.

Thanks Fred. I had in mind something cheaper than a voice annuciator, but that 4060 sounds interesting, gotta link to the one you mean and a ball park price. Regards Ken

I think Mouser is the easiest to deal with:

and some cheap latch material *cd4001*&Ntx=mode%2bmatchall&Mkw=cd4001&N=1323038&Ntk=Mouser_Wildcards Each part type also has a datasheet link. You can also pick up all the little odds and ends like a battery holder, momentary switches, little plastic box, resistors, caps, etc there .

I mistook annunciator to mean a voice message, so you just want a little chime type of piezo gizmo, ding-dong, ding-dong, DING-DONG!

The Elegant Way: Use a microcontroller. One chip solution. Get modern design experience. Perfect 1st uC project.

The Newbie Way: RC timers and discrete digital. "Now if you can't play with the electronics properly, Daddy will take them away."

The Lazy Way: Check Ebay for digital timers with the features you want.

The Wise Way: Tea vs Your Time... I'm sorry but tea loses.. There has to be something better you can do with your time.

The Things Change Way Don't bother making anything.. Your wife may give up tea because it stains her teeth.

D from BC

with:

some cheap latch

material

*cd400...

I've got loads of components in stock and a local Radio Shack. Hey, a dying piezo will do, a brief whistle thanks. Ken

Great project for Xmas 2009.

Yup, you're getting warmer!

Do I have to read....

Why do thing I'm married? SHe makes the tea.

No chance, her second favorite hobby is peeing.

Regards Ken PS: Been looking over the circuit, likely I'll upgrade to a 9V battery...hey a modified $5 smoke detector, does two things!

material

*cd400...

But, it's so much fun to design a "ding" circuit! (It's just a damped sine wave.) :-)

Cheers! Rich

material

*cd400...

LOL, daughter buys us a fancy clock that chimes hourly, darn thing woke me up! In goes a rheostat, works fine now.

I was just playing with the test button on a Smoke Alarm, a shot of negative makes it scream, so I'll attenuate the V to the Piezo, to get it down to output a few chirps.

Now it's to the timing logic.

Thanks Cheers back! Ken