Photon quantumxt

Robotics | Embedded Systems | Space

quantumxt / detect_star.py

Created April 7, 2026 09:20

Star detection utility

	import cv2
	import numpy as np
	import os

	TARGET_WIDTH = 2048
	TARGET_HEIGHT = 1536
	FOV_WIDTH = 3.54
	FOV_HEIGHT = 2.62
	DPP_HORIZONTAL = FOV_WIDTH/TARGET_WIDTH # Degree/px
	DPP_VERTICAL = FOV_HEIGHT/TARGET_HEIGHT # Degree/px

quantumxt / gpio_test.py

Created February 19, 2026 09:03

GPIO test, ensure that gpiod is installed: pip install gpiod --break-system-packages

	import gpiod
	import time
	from gpiod.line import Direction, Value

	PINS = [17, 18, 19, 20, 21]
	CHIP = "/dev/gpiochip4" # Path is required in v2

	# Request all pins at once
	with gpiod.request_lines(
	CHIP,

quantumxt / alt_ball.py

Created January 29, 2026 04:50

Altitude indicator with NiceGUI

quantumxt / dashboard.json

Last active December 22, 2025 06:20

Receive Ambient Weather Hub data from custom server, and publish under `/latest` & `/history` endpoints.

quantumxt / cloud_maker.py

Last active November 11, 2025 10:14

Satellite imagery stitcher

	import requests
	from datetime import datetime, timedelta
	from PIL import Image
	import os

	# Starting time
	start_time = datetime.strptime("20251101_0000", "%Y%m%d_%H%M")
	# 20251101_0000
	# Furthest is approximately 89 days from current date

quantumxt / motion.py

Created September 17, 2025 10:37

	import numpy as np
	import matplotlib.pyplot as plt

	# Parameters for the simulation
	max_acceleration = 2
	max_velocity = 4 # max velocity in degrees per second
	remaining_angle = 5 # target angle to reach in degrees
	time_step = 0.02 # time step for simulation in seconds

	acc_ratio = 0.05 # Front and back, (0.01 - 0.99)

quantumxt / sdf2stl.py

Last active January 31, 2025 07:57

Convert Gazebo SDF to STL

	import xml.etree.ElementTree as ET
	import numpy as np
	import trimesh

	def parse_sdf_to_stl(sdf_path, output_stl):
	tree = ET.parse(sdf_path)
	root = tree.getroot()

	all_meshes = []

quantumxt / euler_from_quaternion.py

Created September 5, 2024 06:09 — forked from salmagro/euler_from_quaternion.py

ROS2 euler to quaternion transformation.

	def euler_from_quaternion(quaternion):
	"""
	Converts quaternion (w in last place) to euler roll, pitch, yaw
	quaternion = [x, y, z, w]
	Bellow should be replaced when porting for ROS 2 Python tf_conversions is done.
	"""
	x = quaternion.x
	y = quaternion.y
	z = quaternion.z
	w = quaternion.w

quantumxt / benchmark_cpu.sh

Created June 18, 2024 09:53

Benchmark CPU

	#!/bin/bash

	# Set the monitoring duration in seconds
	DURATION=300

	# Set the interval between samples in seconds
	INTERVAL=1

	# Get the current date and time
	CURRENT_DATE=$(date +%Y-%m-%d)

quantumxt / topic_info_extract.sh

Created March 12, 2024 07:22

Extract topic info from current list of ROS2 topic.

	#!/bin/bash

	TOPIC_LIST="list.txt"

	echo ""
	echo "=== Topic Info Extractor ==="
	echo ""
	echo "Topic list file: $TOPIC_LIST"
	ros2 topic list > $TOPIC_LIST
	TOPIC_COUNT=$(cat $TOPIC_LIST \| wc -l)