Reprapsource Opto Endstop

Revision 1

This PCB has been designed to be a flexible update to the Reprap Opto Endstop 2.1, supporting many kinds of optocouplers without cutting traces on the PCB. A screw-on terminal was added for easy assembly. The RJ45 jack was removed because of space and cost reasons. It has an optional 2,54mm header for easy integration on a stripboard.

Features:

Supports both 5-pin digital and 4-pin analogue optocouplers
LED debug output works with both kinds of optocouplers
Easy configuration by one solder bridge
3-pin screw-on terminal for easy installation
3-pin optional header for alternative mounting or direct soldering
License: GPL Version 2

Download Eagle files: rrs_opto_endstop_r1.tar.gz

Get it!

If you live in Europe: You can get it here!

Required parts

Part ID	Part name	Quantity
R1	10k Ohm Resistor	1
R2	220 Ohm Resistor	1
R3	1k Ohm Resistor for LED	1
LED1	3mm LED	1
X1	3 pin 5.08mm pitch screw terminal	1
	Opto Switch	1

Build it!

R1 - 10k Ohm Color Code: brown - black - orange You can insert the resistor in any direction.
R2 - 220 Ohm Color Code: red - red - brown You can insert the resistor in any direction.
Configure Count the pins on your optocoupler and solder the corresponding jumper. Simply use solder to create a bridge. (Note: We used lead-free solder. If you use solder containing lead, this bridge should look much smoother)
R3 - 1k Ohm Color Code: brown - black - red This is the resistor for the LED. You can insert the it in any direction.
LED1 Make sure to install the LED with the short leg to the wide open side on the silkscreen.
Optocoupler Insert the Optocoupler. If you have a digital 5-pin optocoupler, you can only insert it in one direction. On 4-pin optocouplers, check the markings on the top side. Insert it according to the picture.
X1 - 3-pin 5.08mm pitch screw terminal Solder the screw terminal to the position shown on the picture.