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SparkFun Electronics will be closed on July 3rd, 2015 in observance of Independence Day. Any orders placed after 2:00pm MT on July 2nd will be shipped out after the weekend. Thanks!

RichardW

Member Since: December 29, 2010

Country: United States

Profile

Bio

Electronics and software engineer with more than 20 years experience in embedded systems.

Role

Researcher Digital Media Technologies

Organizations

The Centre For Design Innovation

Spoken Languages

English

Programming Languages

C#, C, ASM, PIC, ATMEL, Arduino, ChipKit

  • This issue suggests that the op-amp OPA334 is not being driven at high enough gain. I replaced R4 100K (0603 size) the one closest to the AUD output pin, with a 1M 0603 resistor. Now the output level (P2P level) is much higher, ideal for input for Arduino or microcontroller. But not if you are using it to record audio.

No public wish lists :(