nickovs

# Simple Pi Pico/RP2040 touch interface

# This implements a capacitive touch interface using two GPIO pins and just one external resistor.
# It work by using the user's body as a capacitor to ground; the output GPIO pin goes through the
# resistor to the touch point, which is connected directly to the input GPIO pin. A PIO program
# periodically toggels the output pin and then counts the number of cycles until the input pin
# changes level. The time constant for the response is proportional to both the fixed resistor
# value and the capacitance at the touch point, which varies depending on if the user is touching
# or not. With the default setting a 2.2 megaohm resistor works well.

nickovs

#!/usr/bin/env python3

from random import shuffle
from sys import exit, stderr
from urllib.request import urlopen
from urllib.error import URLError


urls = [
    "ifconfig.me",

nickovs

#!/bin/bash
# Build an AWS Lambda zip file containing git and its dependencies

cat <<\EOF > tmp_build.sh
#!/bin/bash

# Comment this out if you want to see all the actions.
quiet=-q

# List of main executables from /usr/bin to copy into layer

nickovs

#!/usr/bin/env python3
# A simply tool for receiving water meter readings from a Badger ORION water meter.
# Device radio details can be found at https://fccid.io/GIF2006B
# Requires rtl_433 to be installed. See https://github.com/merbanan/rtl_433

import sys
import json
import subprocess

nickovs

#!/bin/bash

# A script for mounting a host directory into a running Docker container

if [ "$#" -ne 3 ]; then
    echo "Usage: $0 <container> <host path> <target path>"
    exit 1
fi

CONTAINER=$1

nickovs

#!/bin/bash

# Clear out old images
[ -d "lib" ] && rm -r lib

cat <<EOF > tmp_recipe.sh
# This is the actual container-side recipe
yum groupinstall -y "Development Tools"

cd /root

nickovs

"""A pure Python implementation of Curve25519

This module supports both a low-level interface through curve25519(base_point, secret)
and curve25519_base(secret) that take 32-byte blocks of data as inputs and a higher
level interface using the X25519PrivateKey and X25519PublicKey classes that are
compatible with the classes in cryptography.hazmat.primitives.asymmetric.x25519 with
the same names.
"""

# By Nicko van Someren, 2021. This code is released into the public domain.

nickovs

# stepper.py

# A micropython driver for 4-phase, unipolar stepper motors such as
# the 28BYJ-48

# Relesed to the Public Domain by Nicko van Someren, 2020

# The constructor for the Stepper class takes as arguments the four
# pins for driving the motor phases, in phase order, and optionally a
# timer. The pins can be passed as pin numbers or machine.Pin objects

nickovs

nickovs