aerialist

#!/usr/bin/env python
# coding: utf-8
# This code try to produce same quaternion from euler angles as Unity
# https://docs.unity3d.com/ScriptReference/Quaternion.html

# Oritinal code is from
# https://stackoverflow.com/questions/12088610/conversion-between-euler-quaternion-like-in-unity3d-engine/12122899#12122899

import numpy as np

aerialist

uCurrent Gold from EEVBlog is an excellent handy tool to measure mA or uA order of low current on battery powered IoT devices. https://www.eevblog.com/projects/ucurrent/

It normally run on CR2032 3v battery and it's voltage swing is capped to 0-1.2V. It also drains out poor quality cheap CR2032s rather quickly.

The web pages reads that you could extend the voltage swing by increasing the battery voltage, upto 5.5v. But don't be tempted add a DC jack to use external power supply!!

It's negative pole is used to make "virtual ground". It needs to be independent from the ground of DUT. So it's important the device runs on battery.

aerialist

import pandas as pd

import datetime

def make_dt(timestr, start_dt):
    """
    Take starting datetime object and time stamp string in '23:20:35' format
    Return a datetime object with date info from starting datetime and time info from time stamp string    
    """
    ts = datetime.datetime.strptime(timestr, "%H:%M:%S")

aerialist

# This Python file uses the following encoding: utf-8

# https://qmlbook.github.io/ch18-python/python.html
# This bug has already been fixed
# We can connect in QML
# https://bugreports.qt.io/browse/PYSIDE-634

# https://wiki.qt.io/Qt_for_Python_Signals_and_Slots

import sys

aerialist

    __            __
    \ \    /\    / /
     \ \  /  \  / /
      \ \/ /\ \/ / 
       \  /  \  /
       / /\  / /\ 
      / /\ \/ /\ \ 
     / /  \  /  \ \ 
    /_/    \/    \_\ 

aerialist

# Activate switchbot by python with bluepy on Raspberry Pi
# https://github.com/IanHarvey/bluepy
# 
# Switchbot's API is taken from this
# https://github.com/OpenWonderLabs/python-host

import binascii
from bluepy.btle import Peripheral

# find your switchbot address by

aerialist

"{:02X}".format(10)
# 0A

"{:#04X}".format(10)
# 0X0A