pps

Library and tools for working with MP4 files containing video, audio, subtitles, or metadata. The focus is on fragmented files. Includes mp4ff-info, mp4ff-encrypt, mp4ff-decrypt and other tools.

启用搭载米系设备的公版 PPS 支持

USB PD Sink implemetation for embedded.

setup a Raspberry Pi as a Stratum One time server (GPS with PPS)

Stratum-1 time server with Raspberry Pi and GPS

USB-PD charger as a programmable power supply.

Use a GPS receiver on Linux, macOS, Windows: precision timing, positioning and GUI for evaluation/configuration

Create an NTP and PTP timeserver using RaspberryPi5 with BerryGPS-IMU and PPS

NTP time with GPSD and PPS-enabled GPS device

Linux kernel PPS generator using GPIO pins

Simple NTP server with GPS satellites synchronization.

Prometheus exporter for the gpsd GPS daemon. Collects metrics from the GPSD deamon.

An Orange Pi Zero GPS disciplined NTP server, with an SPI TFT display.

H.264 sequence param parser (sps) written in pure C with no dependencies

Open source Rust firmware for the KOWSI KWS-X1 USB-C meter. Live power, the charger's full USB PD offer (EPR included), fixed, PPS and AVS triggers up to 28/30 V, Quick Charge 2.0/3.0, cable e-marker reading and a 5 A test, and PD passthrough sniffing. Built on Embassy, no vendor firmware needed.

A straightforward and optimized approach to achieve a cost-effective Stratum 1 NTP server using a Raspberry Pi 3B+ and an Adafruit GPS HAT MTK3339

Tools for MPEG-2 TS

An ESPHome GPS/PPS driven NTP server for home lab use

A small project to gather counter statistics from the file system or output from commands. Useful for retrieving packets per second and bytes per second on a network interface.

Android implementation of Standard Point Positioning (SPS) using GPS raw pseudorange measurements.