Electrical Wiring: Pinch Valve Harness

docs/purchasing/parts.json

@@ -287,5 +287,22 @@
         "url": "https://www.digikey.com/en/products/detail/molex/0638190000/1873800"
       }
     ]
+  },
+  {
+    "pn": "ee-stepper-motor-NEMA17",
+    "notes": "Stepper Motor, NEMA 17, Full Flat D Shaft",
+    "manufacturer": "STEPPERONLINE",
+    "mpn": "17hs19-2004s1",
+    "avg_price": 9.57,
+    "price_unit": "",
+    "sources": [
+      {
+        "supplier": "Stepper Online",
+        "spn": "17hs19-2004s1",
+        "price": 9.57,
+        "price_units": 1,
+        "url": "https://www.omc-stepperonline.com/nema-17-bipolar-59ncm-84oz-in-2a-42x48mm-4-wires-w-1m-cable-connector-17hs19-2004s1"
+      }
+    ]
   }
 ]

docs/wiring/index.rst

@@ -9,3 +9,4 @@ Wiring Documentation
    power_entry
    oxygen_sensor
    blower_TK_BA7050H12B
+   pinch_valve

docs/wiring/pinch_valve.rst

@@ -0,0 +1,33 @@
+.. _Pinch Valve Harness:
+
+Pinch Valve Harness
+======================
+
+.. csv-table:: **BOM**
+   :widths: 5, 60, 5, 5, 5, 10, 10, 10
+   :header-rows: 1
+   :delim: 0009
+   :file: ./pinch_valve.bom.tsv
+
+.. image:: pinch_valve.png
+  :width: 800
+  :alt: Wiring diagram
+
+You will need all the tools listed.
+
+* Using items from above BOM as well as:
+   * 5mm heat shrink tubing [:ref:`ew-shrink5`]
+   * Heat gun
+   * Molex Micro-Fit 3.0 Crimper [:ref:`te-microfit-crimper`]
+   * Wire Strippers
+
+* Instructions:
+   #. In this procedure all we need to do is heat shrink the pinch valve's wires for cleanliness and apply a connector to the pigtail wires.
+   #. Cut 3 pieces of the 5mm heat shrink tubing, each 5mm long, and place them over all 4 wires.
+   #. Distribute the heat shrink pieces evenly along the wires' length and heat shrink them in place.
+   #. Strip the appropriate length of insulation from each wire for Micro-Fit 3.0 crimp contacts.
+   #. Crimp the Micro-Fit contacts to the end of each one.
+   #. Insert each contact into the Micro-Fit connector housing, according to the wiring diagram.  Pin 1 is indicated by a raised stripe molded into the connector housing.
+   #. Do a gentle pull test to confirm proper seating of the contacts.
+
+Total price: USD 2.00

docs/wiring/pinch_valve.yml

@@ -0,0 +1,45 @@
+connectors:
+  X1:
+    pn: ee-stepper-motor-NEMA17                         # RW part number from purchasing JSON file
+    pincount: 4                                         # number of pins in the connector
+    pinlabels: [A+, A-, B+, B-]                         # names for the signal on the connector
+    type: NEMA 17 Full D Shaft Stepper Motor            # connector type                                       # connector sub-type
+    mpn: 17hs19-2004s1                                  # manufacturer part number
+    manufacturer: Stepper Online                        # manufacturer
+
+  X2:
+    pn: ec-micro1x4
+    pincount: 4
+    type: Molex Micro-Fit 3.0 1x4
+    subtype: female
+    mpn: h0436450408
+    manufacturer: Molex
+    additional_components:                              # defines additional components such as contacts
+      -
+        type: crimp                                     # additional component type
+        subtype: Molex Micro-Fit 3.0 Female Crimp Contact 20-24awg  # additional component name
+        qty: 1
+        qty_multiplier: populated                       # this multiples by the number of connector instances for the BOM
+        manufacturer: Molex                             # additional component manufacturer
+        mpn: 43030-0002                                 # additional component part number
+        pn: ec-microfit-f-crimp-20-24awg                # RW part number
+
+
+cables:
+  W1:
+    pn: included-with-motor
+    wirecount: 4
+    type: Stepper Motor Built-in Pigtails
+    mpn: N/A
+    manufacturer: N/A
+    # more cable parameters:
+    length: 1000 mm
+    gauge: 20 AWG
+    show_equiv: true # auto-calculate AWG equivalent
+    colors: [BK, GN, RD, BU]
+
+connections:
+  -
+    - X1: [1-4]
+    - W1: [1-4]
+    - X2: [1-4]