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--- reprap:anet:a8:improvement:autobedleveling [2018/12/02 02:27] – external edit 127.0.0.1
+++ reprap:anet:a8:improvement:autobedleveling [2018/12/29 00:33] – Typo fix 0scar
@@ Line 89: / Line 89: @@
 As most sensors need a voltage larger than the 5V provided by the connector there are two options:
   - Purchase a pre made board:
-       * [[https://www.aliexpress.com/item/1-Channel-Optocoupler-Isolation-Module-Input-12V-No-Din-Rail-Holder-PLC-Processors-80KHz-PC817-EL817/32719957788.html?spm=a2g0s.9042311.0.0.BpOXWJ|OctoCoupler]]
+       * [[https://www.aliexpress.com/item/1-Channel-Optocoupler-Isolation-Module-Input-12V-No-Din-Rail-Holder-PLC-Processors-80KHz-PC817-EL817/32719957788.html?spm=a2g0s.9042311.0.0.BpOXWJ|OptoCoupler]]
   - For **5V sensors or for some 6-36V sensors ** use the 5V supply of the connector. Anet and Skynet uses this option for their sensor and it works for the LJ18A3-8-Z/BX. According to some users the low voltage acceptable for the "orange" sensors. But the this might lead to unreliable readings as it is not designed for this voltage.
   - If you have an **open collector NPN** sensor (see above) than you may connect the brown wire to the the 12V input of your board and the blue to the ground and finally the black wire to the Z switch (the board should have an internal pull up).