codebudo’s gists

codebudo / servo_loop.ino

Created February 6, 2019 16:46

Receive signal from RC receiver and proxy to servo.

	#include <EnableInterrupt.h>
	#include "./ServoTimer2.h"

	const int CH_1_PIN = 9;
	const int CH_1_PIN_OUT = 3;
	const int DEADZONE = 20;

	volatile int pwmValue;
	volatile unsigned long prevTime = 0;

codebudo / pwm_interrupt.ino

Created February 6, 2019 00:34

Calculating PWM timing using interrupts.

	#include <EnableInterrupt.h>

	const int CH_1_PIN = 9;

	volatile int pwmValue;
	volatile unsigned long prevTime = 0;

	void setup() {
	Serial.begin(9600);
	enableInterrupt(CH_1_PIN, rising, RISING);

codebudo / PWM_input_test.ino

Created February 5, 2019 17:42

Sample multiple PWM signals. This is a counterexample. Don't do this.

codebudo / lanes.py

Created February 1, 2019 20:24

Simple lane detection on a single image

	import cv2
	import numpy as np

	def canny_image(image):
	gray = cv2.cvtColor(image, cv2.COLOR_RGB2GRAY)
	blur = cv2.GaussianBlur(gray, (5,5), 0)
	canny = cv2.Canny(blur, 50, 150) # TODO change values based on light levels
	return canny

	def region_of_interest(image):

codebudo / videocap.py

Created February 1, 2019 19:53

RasPi camera video capture

	from picamera.array import PiRGBArray
	from picamera import PiCamera
	import cv2

	# initialize the camera and grab a reference to the raw camera capture
	camera = PiCamera()
	camera.resolution = (1280, 720)
	camera.framerate = 10
	rawCapture = PiRGBArray(camera, size=(1280, 720))

codebudo / pingdom.js

Created January 11, 2019 06:14

	const request = require('request-promise');
	const twilio = require('twilio');

	const log = console.log; // switch to winston or something

	// Your Account SID from www.twilio.com/console
	let accountSid = process.env.TWILIO_SID;
	// Your Auth Token from www.twilio.com/console
	let authToken = process.env.TWILIO_AUTH_TOKEN;

codebudo / alteredAtRest.js

Last active March 24, 2018 21:38

It's possible to alter encrypted data if you know something about the underlying plaintext.

	var crypto = require('crypto');

	var iv = Buffer.from('0000000000000000000000==', 'base64');
	var key = Buffer.from('ffffffffffffffffffffffffffffffff');

	// aes-256-gcm or aes-256-ctr
	var encrypt = crypto.createCipheriv('aes-256-ctr', key, iv);
	var decrypt = crypto.createDecipheriv('aes-256-ctr', key, iv);

	var plaintext = 'hello world';

codebudo / .screenrc

Created April 1, 2016 16:48

GNU Screen settings to reduce finger yoga. ctl-o as the activation key and hide the status bar, startup message, and visual bell.

codebudo / .bash_profile

Created October 24, 2012 20:49

Bash profile for fancy prompt

Sebastian Mikkel Wilson codebudo