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Do I have to solder a battery holder like this (https://shop.pimoroni.de/products/battery-holder-3xaa-with-cover-and-switch?utm_medium=cpc&utm_source=googlepla&variant=19618738116&gclid=Cj0KCQjwn4ncBRCaARIsAFD5-gVPMPQg-Hr6TeOP63dCP3NIcx_pjwnf5qXUCgWFh1-4kTcRJSXkzfEaArLhEALw_wcB) to the GPS module? Red cable to vcc and black cable to GND?
MobiTech
The module (if it's this one? https://www.openimpulse.com/blog/products-page/product-category/gy-neo6mv2-gps-module/) says it supports input voltages of between 3 and 5v - so you could attach:
Just be careful not to connect VCC to Puck.js as well - Puck.js only supports input voltages between 2 and 3.6v.
If you want to connect both to the same power supply you'd do best to use a regulated 3.3v supply that you can then power from anything within the power supply's input range.