• Description
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Plugs into an Arduino board and convert DTMF (Touch Tone) signals into digital so that Arduino and other microcontrollers can understand.

At the heart of this module is a DTMF decoder chip. This application specific chip that does all the heavy lifting so that the interface with your Sketch is easy.

 

Here’s a functional diagram of the DTMF Shield:

 

Key Features:

• Operating Voltage: 5v, Current draw: 3mA
• Input signal range: 27.5 to 869mVrms  (-29 to 1dBm )
• Trim pot for easy gain adjustment.
• 3.5mm stereo audio jack (TRS) and 0.1″ standard interface headers
• Easy to reconfigure the audio jack pinout
• LED to indicate tone decoded

Dimension:

•  0.79″ x 2.16″, 20mm x 55mm

Documents:

• Library and Sample Sketch: download
• User Manual
• DTMF Module Schematics
• Datasheet for Holtek HT9170B

 

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DTMF Shield for Arduino

• Brand: Seeed Studio
• Product Code:Seeed-Shield-DTMF-Arduino
• Reward Points:30
• Availability:In Stock

• रo 2,999.00

• Price in reward points:2999