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Reference design for the Microphone (E-25). This project is in progress.

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E-25 Microphone

Project Status: Prototype

If you are new to GitHub and would like to create a derivative of this project, please have a look at GitHub instructions to fork a repo

Description

Out of our passion to solve the issue of time waste in the robot creation process, ARC was born. The ARC software platform reduces the time it takes to get from idea to implementation. Since 2011 we have been listening to the challenges robot builders encounter and continue to provide them with an ever expanding toolbox of solutions. Join us on this journey!

We didn't stop at the software, we also made time saving hardware solutions. This Microphone reference design is one of them. The Microphone connects to an EZ-B ADC port. The idea is that ARC would take the analog data and convert it into sound in order to be processed inside ARC. We want to share these files with you so you can create your own version for your community and customers to enjoy!

Features:

  • 3.3V voltage regulator on-board
  • Full human audible range 20Hz-20kHz
  • Audio input to 2-stage amplified analog voltage output
  • Single supply amplifier
  • Green Power LED
  • Voltage requirements: 3.2-16V (3.3V typical)
  • Current draw: 1.2mA
  • Dimensions: 16.2(W) x 39.5(L) x 7.8(H) (mm)
  • Weight: 4g

Major components:

  • CMA-4544PF-W Analog condenser microphone (-44dB)
  • OPA2344UA/2K5 Opamp 1MHz
  • SPX3819M5-L-3-3/TR 3.3V Regulator

Manufacturing notes:

  1. Manufacturer: Single side placement and soldering of SMT components
  2. Manufacturer: Single Side soldering of THT component

Contents

Documentation: Schematic PDF, Datasheet PDF, BOM

Hardware: Altium PCB design File, Altium SCH Design File

Altium Libraries are also available here

Photos

Contact

For profit use of these files requires written consent. Contact partners@synthiam.com. For everyone else, party on!

Synthiam Website: https://synthiam.com

License

This project is released under the following license:

Hardware: Creative Commons Plus Attribution-NonCommercial 4.0 International (CC+ BY-NC 4.0)

Please see LICENSE.md for license details.

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Reference design for the Microphone (E-25). This project is in progress.

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