Description
Sound meter kit with 10 LED output Adjustable sensitivity Designed and manufactured in the UK by KitronikThis Kitronik Sound Meter Kit uses a microphone to measure the sound level and then displays the amount of sound by lighting more LEDs the louder it is. There is an adjustment to set the sensitivity and the output is displayed on 10 LEDs.The circuit uses an LM386 audio amplifier IC to amplify the signal from the microphone, then the LEDs are driven by an LM3914 dot / bar display driver.Requires a 9V (PP3) battery, available separately.This kit includes:1x 10K resistor1x 22K resistor1x 10K Pot1x 5mm red LED5x 5mm Green LED3x 5mm Yellow LED1x 100nF ceramic disc capacitor1x 10nF capacitor2x 10uF capacitor2x 1uF capacitor1x 220uF capacitor1x PP3 Clip lead1x Microphone1x LM386 audio amplifier IC1x LM3914 dot / bar display driver1x 18 pin IC holder1x 8 pin IC holderSupplied in blister packaging.
