pgmfi.org

Hey everyone,

I’ve been working on a small project to log injector activity and vehicle movement using thehttps://www.kasuo.com/product/yic71513pgmgg-datasheet-price-pdf/. The idea is to track when the engine starts, where the vehicle goes, and how long it runs, all in one compact board.

I hooked the module to a 3.3 V STM32 microcontroller, which reads injector pulses and stores the GPS data on an SD card. When the engine turns off, the GNSS goes into low-power mode to save battery. Accuracy is good so far (around ±2.5 m), but cold starts take 30 seconds after sitting overnight.

Main issues I’m still trying to solve:

Some interference during engine cranking, probably from ignition noise.
Figuring out how to speed up satellite fix times.
Syncing GPS timestamps with injector pulse logs more precisely.

If anyone here has worked with YIC GNSS modules or similar setups for car tracking or data logging, I’d love to hear your tips. Especially on filtering noise and reducing cold-start delays.

Thanks!