Erin Marshall erinzm

Keybase proof

I hereby claim:

I am ArchimedesPi on github.
I am archimedespi (https://keybase.io/archimedespi) on keybase.
I have a public key whose fingerprint is F1A1 745C 486D 2F41 794C A621 FE4E 860E 818B C54C

To claim this, I am signing this object:

Measuring lag on MR controllers

The important thing is remembering that what you want to measure is the time between pressing a button or joystick and the motor beginning to run. The best way to measure this is as follows (you need a digital oscilloscope):

Open up a Logitech joystick and solder in two little wires to the a button's pads so that you get a current when it's pressed. Wire these to channel A of an oscilloscope.
Attach a pair of leads to a motor controller. Wire these to channel B of an oscilloscope.
Write software to run the motor when the button is pressed. Make it as simple as possible.
Set the oscilloscope to trigger and acquire on channel A rise (or fall depending on the wiring). Then you can see the distance between the button signal's rising edge and the motor signal's rising edge.

When INIT is pressed:

init() is called
init_loop() is called repeatedly

When play is pressed:

start() is called
loop() is called repeatedly

When stop is pressed:

	add_filter("manage_upload_columns", 'upload_columns');
	add_action("manage_media_custom_column", 'media_custom_columns', 0, 2);

	function upload_columns($columns) {

	unset($columns['parent']);
	$columns['better_parent'] = "Parent";

	return $columns;

	#!/bin/bash

	# Install Mupen64Plus
	cd
	mkdir mupen64plus
	cd mupen64plus
	echo "Downloading installation scripts..."
	wget https://github.com/mupen64plus/mupen64plus-core/raw/master/tools/m64p_helper_scripts.tar.gz
	echo "Done"
	echo "Unpacking installation scripts..."

	#!/bin/bash

	# Install M64Py
	cd
	mkdir m64py
	cd m64py
	sudo apt-get install python-qt4 python3-qt4 libsdl1.2-dev
	wget http://downloads.sourceforge.net/project/m64py/m64py-0.2.0/m64py_0.2.0-1_all.deb?r=http%3A%2F%2Fm64py.sourceforge.net%2F&ts=1392242617&use_mirror=hivelocity
	mv m64py_0.2.0-1_all.deb?r=http:%2F%2Fm64py.sourceforge.net%2F m64py_0.2.0-1_all.deb
	sudo dpkg -i install m64py_0.2.0-1_all.deb

	#include <Encoder.h>

	// -- some #defines to save typing
	#define pinToKeyWD(pin, key) if (digitalRead(pin)==LOW) { Keyboard.press(key); } else if (digitalRead(pin)==HIGH) { Keyboard.release(key); }
	#define btn(pin) pinMode(pin, INPUT_PULLUP);
	#define light(pin) pinMode(pin, OUTPUT);

	// -- set up the encoders
	Encoder wheel1(0, 1);
	Encoder wheel2(2, 3);

	#include <ESP8266WiFi.h>

	const char ssid = "redacted*";
	const char password = "redacted*";

	const char *phant_public_key = "pwz6Xgv697hdJdoMA9qm";
	const char phant_private_key = "redacted*";
	const char *phant_host = "data.sparkfun.com";

	void setup() {

	package com.qualcomm.ftcrobotcontroller.opmodes;

	import com.qualcomm.robotcore.eventloop.opmode.OpMode;
	import com.qualcomm.robotcore.hardware.DcMotor;
	import com.qualcomm.robotcore.hardware.DcMotorController;
	// everything before this line IntelliJ writes out for you automatically as you use stuff.

	/**
	* Created by liam on 9/19/2015.
	*/