kongmunist’s gists

kongmunist / Bluetooth-Company-Identifiers.csv

Last active July 21, 2025 18:58

[Bluetooth Company Identifiers] Company identifiers are unique numbers assigned by the Bluetooth SIG to member companies requesting one. Last updated July 21 2025

	0x0000	Ericsson AB
	0x0001	Nokia Mobile Phones
	0x0002	Intel Corp.
	0x0003	IBM Corp.
	0x0004	Toshiba Corp.
	0x0005	3Com
	0x0006	Microsoft
	0x0007	Lucent
	0x0008	Motorola
	0x0009	Infineon Technologies AG

kongmunist / deepsleep_nrf52840_seeed.ino

Created October 1, 2024 20:39

Gist of the deep sleep current example from https://medium.com/p/732def7d95c3

	// The MIT License (MIT)
	// Copyright (c) 2019 Ha Thach for Adafruit Industries

	#include "SdFat.h"
	#include "Adafruit_SPIFlash.h"

	// Uncomment to run example with custom SPI and SS e.g with FRAM breakout
	// #define CUSTOM_CS A5
	// #define CUSTOM_SPI SPI

kongmunist / fitbit_tz_correction.py

Created February 12, 2024 16:30

Code to correct Fitbit sleep data using Google Timeline data, as described in andykong.org/blog/glocfitbittzcorrection

	import numpy as np
	import pandas as pd
	import matplotlib.pyplot as plt
	# use long/lat at the end of the day to get the timezone, then correct each sleep date's time to UTC.
	from timezonefinder import TimezoneFinder
	import datetime
	import pytz
	# how to get offset from UTC from timezone name
	pacific_now = datetime.datetime.now(pytz.timezone('US/Pacific'))
	pacific_now.utcoffset().total_seconds()/60/60

kongmunist / attiny_ds3231_minimal_example.ino

Created February 5, 2024 20:54

Code for interfacing the ATtiny 25/45/85 with the DS3231, as described in https://andykong.org/blog/attinyrtc/

	#include <TinyWireM.h>
	#include "SoftwareSerial.h"
	byte ss=0, mi=0, hh=0, wd=6, dd=1, mo=1, yy=0;

	const int Rx = 3; // this is physical pin 2
	const int Tx = 4; // this is physical pin 3
	SoftwareSerial mySerial(Rx, Tx);


	void setup() {

kongmunist / fetcher.py

Created December 7, 2023 10:42 — forked from shion24hub/fetcher.py

fetcher

	import os
	from datetime import datetime
	from logging import INFO, Formatter, StreamHandler, getLogger
	from urllib.error import HTTPError

	import polars as pl


	class Fetcher:
	"""

kongmunist / tz_converter.py

Created November 30, 2023 16:56

	# This file uses the sleep stress file's timestamp to convert each sleep row to its proper timezone
	import pandas as pd
	import matplotlib.pyplot as plt
	import copy

	stressFile = "cooked/Stress_Stress Score.csv"
	sleepFile = "cooked/Sleep_sleep.csv"

	# Each line in sleep has a few time-associated cols: (dateOfSleep, startTime, endTime)
	# These are given in the timezone of the user's device and not in UTC

kongmunist / fitbitImportParser.py

Last active November 26, 2023 14:47

	import pandas as pd
	import os
	import re

	# We are loading in a data export from Fitbit.
	allExports = "raw/"
	curExport = [allExports+x for x in os.listdir(allExports) if os.path.isdir(allExports+x)][0]
	curExport = curExport + "/" + [x for x in os.listdir(curExport) if os.path.isdir(curExport+"/"+x)][0]
	print(f"Data export we're converting is \n\t{curExport}")

kongmunist / backtrader_clean.py

Last active October 23, 2023 14:03

Code for Medium article "Accelerating backtesting using index trick"

	import backtrader as bt
	import pandas as pd
	import time

	############### Preprocess data
	filename = "../data/BTC-USD_15min_2017-4-5.csv"
	df = pd.read_csv(filename, header=0, parse_dates=['time'], index_col='time')

	############### Create backtrader data feed, set up strategy and broker
	# Create Cerebro backtesting instance

kongmunist / bg.css

Last active September 17, 2023 14:15

In-line translator for highlighted words

	.highlight-popup {
	position: absolute;
	background-color: #0044b3;

	color: white;
	padding: 4px;
	border-radius: 4px;
	z-index: 9999;
	}

kongmunist / highlight_big_icloud_videos.js

Created June 6, 2023 18:21

	// From the blog post andykong.org/blog/icloudconfusion/

	function boxTops(){
	HTMLCollection.prototype.toArray = function() { return Array.from(this); }

	// Select all the time badges and parse out their total runtime in seconds
	a = document.getElementsByClassName('video-text-badge').toArray()
	b = a.map((x) => x.innerText)
	c = b.map((y) => y.split(":").map((x) => parseInt(x)))
	d = c.map((x) => x[0]*60 + x[1])

Andy Kong kongmunist