Small, USB Powered (5V), Ambient sound level indicator module.
Built in Mike, micro-controller, 26 (2X13) Red LEDs. Adjustable sensitivity. 5V powered from a USB micro B connector.
Note: this is a level indicator Not a calibrated VU meter.
LEDs light in pairs. L: 1-5/8 W: 5/8 H: 3/8 WT: .01
WARNING: This product can expose you to chemicals including Nickel which is known to the State of California to cause cancer and which is known to the State of California to cause birth defects and/or other reproductive harm. For more information, go to www.P65Warnings.ca.gov
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As of August 2018 the State of California has changed the requirements of the Prop 65 law. We now must list on our website any possible chemicals the can cause cancer, birth defects or reproductive problem.
As an example:
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To put it simply we are a small company and do not have the resources to test every single part, so we list every thing as hazardous. Please recycle all electronic parts responsibly and under no circumstance eat, drink or smoke these parts and wash your hands after touching!
visually appealing display, would like to know what max operating voltage is
13 segment level indicator
I checked the thresholds by inputting mv of DC into pin 16 of the uP. At most sensitive setting, needed 80mv to solidly light the 1st LEDs, then 20mv more for each step. Sensitivity 2 required 2 times the mv, sensitivity 3 required 3 times the mv, etc. The mic had a 3 transistor amplifier to boost the audio to a higher level. True, this is not a DB meter, would work well to indicate the relative volume of a PA system. Soft speakers could get a visual feedback of their softness, and speak or sing louder so everyone could hear. I used 7of these to monitor surround sound speakers. I hope they get more in stock soon.