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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

looping one minute beeper for jogging circuit

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stillsoldering

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Need a really simple, non-accurate timer for running and biking at different heart rates. Can build from any schematic, but lost all mine. Are there micro-speakers available. A range from one to 10 minutes. It's a real pain remembering to look at a second hand every minute!!!
 
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