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Trace: gen7_endstop_1.1

Gen7 Endstop 1.1

Gen7 Endstop 1.1 assembled and ready to use.

Gen7 Endstop 1.1 assembled and ready to use.

Gen7 Endstop 1.0/1.1 is the intitial version in the development of Gen7 Endstop. Circuitry was close to the one of RepRap's Generation 3 Electronics, but it was redesigned for DIY-ablility of the PCB.

How to get it

For the most recent version, see Gen7 Endstop 1.3.1.

As this is no longer the newest version and is based on a part no longer available, you're pretty much on your own to make one. Best bet is to look up the releases folder of the release-1.1 branch on the Git repository.


Traumflug can do custom PCBs quickly, so if you offer him a beer or something, chances are good to get a couple of boards.

Electronic Components


Assembly Instructions

Parts List

Name Count Designations Remarks
Resistor 220 Ohms 1R1
Resistor 1 kOhms 1R3
Resistor 10 kOhms 1R3
LED 3 mm Red 1LED1
Photointerrupter H21LOB 1U1 “End of life”, no vendor known, you might have luck at eBay.
Molex KK100 3-Pin Header 1CONN1
Cable Connector for the above 1
Crimp Contact for the above 3

General Considerations

  • To find out which components to put where, have the layout on your PC screen available.
  • PCBs fabricated with Voronoi paths need more heat, so raise your soldering iron's temperature by about 20 deg Celsius.
  • Start with the flattest parts, usually wire bridges or resistors. This way, components won't fall out when you lay the PCB on it's front for soldering. Then continue with parts of raising height, connectors are usually among the last ones.
  • To ease soldering jumper headers and similar components, put a small drop of cyanacrylate glue onto the component side before inserting them. As the PCB is single-sided, this won't hurt the solder point.





  • Take care to not overheat the photo sensor. Solder one pin on each side, then make a pause of a minute before continueing.
  • As LEDs have to be inserted the right way, they have legs of different length. The longer leg (+) goes into the hole closer to the photo sensor, the shorter one (-) into the hole closer to the border.



gen7_endstop_1.1.txt · Last modified: 2018/05/27 16:10 (external edit)