cgp cgp

My Note taking for IR receivers and IR photoresistors using arduino or nodemcu platforms.

Currently, I'm using the following IR photoresistor (also called an IR diode?), mostly by accident because I thought it was an IR receiver. I didn't think there would be a difference between the three pin infrared receiver and the two pin infrared receiver. Oops.

http://www.gikfun.com/leds-c-6_51/5mm-940nm-leds-infrared-emitter-and-ir-receiver-diode-p-519.html

https://forum.arduino.cc/t/cant-get-an-ir-photoresistor-to-work/698649/1

These are very basic components geared towards proximity testing.

These are just my notes on updating from a Melzi board to an SKR 2 along with Marlin firmware for a monoprice maker select v2 (wanhao duplicator i3).

Exact specs

I'm using the skr v2 for the monoprice maker select v2, which, to my untrained eye is basically adding hyperdrive technology to a go cart, but, maybe I make too much of the difference in the hardware.

Tasklist (rough, will be adjusted a lot)

Wire up the board?
Compile Marlin firmware + configs
Calculate current limiters for drivers
Hook up the front panel

	# sometimes you don't have a corporate server you want to hook up to?

	chown ec2-user /home/ec2-user/.chef/companypem
	wget https://packages.chef.io/stable/el/6/chefdk-0.14.25-1.el6.x86_64.rpm
	rpm -Uvh chefdk-0.14.25-1.el6.x86_64.rpm

	package frc.robot;

	import edu.wpi.first.math.geometry.Pose2d;
	import edu.wpi.first.math.geometry.Rotation2d;
	import edu.wpi.first.math.kinematics.ChassisSpeeds;
	import edu.wpi.first.math.kinematics.SwerveModuleState;
	import edu.wpi.first.wpilibj.smartdashboard.SmartDashboard;
	import swervelib.SwerveDrive;
	import swervelib.SwerveModule;