[#4] Add basic md files for hardware setup

Author: fjp

docs/hardware_setup/3D_print.md

@@ -0,0 +1,2 @@
+# 3D Printing
+

docs/hardware_setup/assembly.md

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+# Assembly

docs/hardware_setup/electronics.md

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+# Electronics
+
+The bread board view from [Fritzing](https://fritzing.org/) shows the connection schematic. Both models (DiffBot and Remo) use
+slgithly different hardware (e.g. motor driver) which you can see in the following:
+
+=== "Remo"
+
+    [![Remo Fritzing]][Remo Fritzing]
+
+      [Remo Fritzing]: /fritzing/remo_architecture.svg
+    
+
+=== "DiffBot"
+
+    [![DiffBot Fritzing]][DiffBot Fritzing]
+
+      [DiffBot Fritzing]: /fritzing/diffbot_architecture.svg

docs/hardware_setup/overview.md

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+# Hardware Setup Overview
+
+The following pages guide you on how to setup the hardware of your robot (either DiffBot or Remo).
+
+- [**3D Printing**](3D_print.md) is only relevant for Remo robot (not DiffBot). 
+  Here you will learn which parts to print and some suggestions to configure your slicer.
+- [**Electronics**](electronics.md) provides instructions to connect the single board computer (e.g. Raspberry Pi), microcontroller (e.g. Teensy) as well as
+  the other components such as the motor driver, motors and laser scanner.
+
+    ??? info "Preview of connection schematic"
+        The bread board view from [Fritzing](https://fritzing.org/) shows the connection schematic. Both models (DiffBot and Remo) use
+        slgithly different hardware (e.g. motor driver) which you can see in the following:
+
+        === "Remo"
+
+            [![Remo Fritzing]][Remo Fritzing]
+
+            [Remo Fritzing]: /fritzing/remo_architecture.svg
+            
+
+        === "DiffBot"
+
+            [![DiffBot Fritzing]][DiffBot Fritzing]
+
+            [DiffBot Fritzing]: /fritzing/diffbot_architecture.svg
+        
+
+- [**Assembly**](assembly.md) give instructions to assemble Remo robot.
+
+
+

docs/index.md

@@ -16,7 +16,7 @@ The project is split into multiple parts, to adress the following main aspects o
 
 - [Bill of Materials (BOM)](./components.md) and the theory behind the parts.
 - [Theory of (mobile) robots](./theory/index.md).
-- [Assembly](/projects/diffbot/assembly/) of the robot platform and the components.
+- [Assembly](./hardware_setup/assembly.md) of the robot platform and the components.
 - Setup of ROS (Noetic or Melodic) on either Raspberry Pi 4 B or Jetson Nano, 
   which are both [Single Board Computers (SBC)](https://en.wikipedia.org/wiki/Single-board_computer) and are the brain of the robot.
 - [Modeling the Robot](/projects/diffbot/URDF) in Blender and URDF to simulate it in Gazebo.