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Retail Pack - Sound Meter Kit

8
Exclusive to Kitronik
Teaching Notes
Key Stage 4
DISCONTINUED - This project uses a microphone to measure the sound level and then displays the amount of sound by lighting more LEDs the louder it is.

Availability: Out of stock

Code1+
1042 £8.00
(£9.60 incl VAT)

Please note: this product has been discontinued and is present for reference only. It is not possible to buy this product.

This project 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:

  • x1, 10K resistor
  • x1, 22K resistor
  • x1, 10K Pot
  • x2, 5mm red LED
  • x5, 5mm Green LED
  • x3, 5mm Yellow LED
  • x1, 100nF ceramic disc capacitor
  • x1, 10nF capacitor
  • x2, 10uF capacitor
  • x2, 1uF capacitor
  • x1, 220uF capacitor
  • x1, PP3 Clip lead
  • x1, Microphone
  • x1, LM386 audio amplifier IC
  • x1, LM3914 dot / bar display driver
  • x1, 18 pin IC holder
  • x1, 8 pin IC holder

PCB dimensions: 91.5mm x 45.5mm.

Click here to download build instructions pdf_icon.gif

This kit is supplied in a blister retail packaging. It is also available in a simple grip seal bag and bulk quantities for more details on this version click here

Buy British:

 This kit is designed and manufactured in the UK by Kitronik.

Please note: this product has been discontinued and is present for reference only. It is not possible to buy this product.

Physical characteristics:

  • PCB Length: 91mm.
  • PCB Width: 46mm.
  • PCB Component Count: 24.

Electrical characteristics:

  • Voltage Nominal: 9V.
  • Voltage Range: 3V - 12V.
  • Standby Current: 26.6mA.
  • Current Max at Nominal Voltage: 133mA.

Questions:

Posted by Emily, Wednesday, 16 December 2015 on product Retail Pack - Sound Meter Kit

Question:

Do you do this product with 5mm ultra bright water clear LEDs? If not, could you supply these LEDs to fit with this product? I need three sound meter kits and white LEDs for all of them. Thanks

Answers:

  • Posted by Michael Lockhart on Wednesday, 16 December 2015

    Unfortunately we aren’t able to provide this kit with the changes as it is standard kit. However there shouldn’t be a reason why a white LED couldn’t be used in place of the other three colours, we would recommend the https://www.kitronik.co.uk/3542-white-5mm-diffused-led-700mcd.html

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