RAKwireless WisBlock Analog UniDirectional Microphone - Non-RAK mounting

The WisBlock Analog UniDirectional Microphone Kit includes an analog unidirectional microphone (RAK18041) and the RAK18040 - Analog Mic to I2S module. This kit allows you to listen for sounds in a forward direction while reducing sounds from behind the microphone.

Mounting: Non-RAK microphone mounting - In a Non-RAK microphone mounting the boards are screwed together except the microphone. The microphone is connected via an FFC and is mounted separately (normally to your case to allow the microphone to hear the audio outside of the case).

RAK18040 is an analog microphone to the I2S module, part of the WisBlock Audio Series. With an analog microphone like the RAK18041, analog audio can be directed to I2S output using this module. RAK18040 is designed based on NAU85L40B from Nuvoton. NAU85L40B is an audio ADC with an integrated frequency-locked loop (FLL) and microphone preamplifier.

RAK18041 is a WisBlock Analog Microphone Module that is based on SHY-B9750MUP2.8-C1033. This WisBlock Audio module is a unidirectional microphone that allows you to capture frequency waves from 100 Hz up to 16,000 Hz from the external environment. This microphone needs to be interfaced with WisBlock Audio analog microphone driver such as RAK18040 to make it compatible with the WisBlock IO slot.

RAK18040:

• Audio ADC
• Integrated FLL and microphone preamplifier
• I2S interface for audio data
• I2C interface for control
• Supports two (2) analog microphones
• Module Size: 25 x 35 mm

RAK18041:

• Unidirectional Analog Microphone
• Sensitivity: 100 Hz to 16,000 Hz
• Compatible with WisBlock Audio stack
• Module Size: 15 x 25 mm