Timegrapher Microphone Adapter for iPhone (DIY)

While the timegrapher device is rather limited in terms of software, the microphone stand that comes with it can be a great addition to a watch timing app. It is well built, allows the watch to be tested in different positions, and has a sensitive contact microphone with an integrated preamplifier.

Here is a prototype adapter box that powers the integrated mic preamp and feeds the amplified signal to the iPhone audio input. No timegrapher device is required, only the microphone.

(click/tap to zoom)

USE AT OWN RISK. Confirm with your specific timegrapher device. Check and match connector pinout, voltage, and polarity. Reverse polarity will damage the preamp!

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