- Published: Tuesday, 12 November 2013
- Written by Jon Chandler
If you have a need to add a single sound effect to a micro project, a ISD1820 voice module board may be a good answer. These boards can record a single audio sample of up to 20 seconds using a built-in microphone and will play back the sample on demand with good fidelity. These are available on eBay for around US$6 and they're easily interfaced to a micro board. The ISD1820 chip can drive a small speaker directly or an amplifier may be used for higher volume levels.
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