Add doc about soldering the boards together

README.rst

@@ -41,6 +41,8 @@ This is easily achieved by downloading the `Adafruit library and driver bundle <
 Usage Example
 =============
 
+`How to solder boards together <https://circuitpython-trellism4_extended.readthedocs.io/soldering.html>`_
+
 To use Trellis as 2 Neotrellis (seesaw):
 
 .. code-block:: python3

docs/_static/tilled_trellis_full.jpg.license

@@ -0,0 +1,3 @@
+# SPDX-FileCopyrightText: Copyright (c) 2021 Arofarn
+#
+# SPDX-License-Identifier: CC-BY-4.0

docs/_static/tilled_trellis_left_pad.jpg.license

@@ -0,0 +1,3 @@
+# SPDX-FileCopyrightText: Copyright (c) 2021 Arofarn
+#
+# SPDX-License-Identifier: CC-BY-4.0

docs/_static/tilled_trellis_right_pad.jpg.license

@@ -0,0 +1,3 @@
+# SPDX-FileCopyrightText: Copyright (c) 2021 Arofarn
+#
+# SPDX-License-Identifier: CC-BY-4.0

docs/index.rst

@@ -10,6 +10,12 @@ Table of Contents
 
     self
 
+.. toctree::
+    :caption: Soldering boards
+
+    soldering
+
+
 .. toctree::
     :caption: Examples
 

docs/soldering.rst

@@ -0,0 +1,26 @@
+Soldering TrellisM4 with 2 Neotrellis
+=====================================
+
+Here is how to do tilled one trellis m4 and 2 neotrellis (seesaw) into a square :
+
+1. solder the 2 neotrellis together as described `in the tutorial <https://learn.adafruit.com/adafruit-neotrellis/tiling>`_ (including pad for I2C addresses as needed).
+2. solder the tilled neotrellis to the trellis :
+
+  - every texts on the silkscreen in the same direction = the LED N°1 of the
+    neotrellis and the USB port up
+  - among the left pads on the bottom edge of the trellis m4 :
+    solder ONLY the center one (GND)
+
+    .. image:: _static/tilled_trellis_left_pad.jpg
+       :scale: 50 %
+
+  - solder every 5 pads on the right
+
+    .. image:: _static/tilled_trellis_right_pad.jpg
+       :scale: 50 %
+
+
+Here is a picture of the full tilled board:
+
+.. image:: _static/tilled_trellis_full.jpg
+   :scale: 50 %

docs/soldering.rst.license

@@ -0,0 +1,4 @@
+SPDX-FileCopyrightText: 2017 Scott Shawcroft, written for Adafruit Industries
+SPDX-FileCopyrightText: Copyright (c) 2021 Arofarn
+
+SPDX-License-Identifier: MIT