Update README

Add a clamp that fixes the lens temporarily on the diode module.

A second clamp fixes the fiber onto the OpenFlexure delta stage.

README.md

@@ -12,13 +12,12 @@ The goal of this project is to provide an open, accessible alternative that can
 Collimated or focussed lasers can cause serious eye injury. Do not replicate without proper training and appropiate laser safety precautions.
 </br>
 </br>
-</br>
 
 <div style="display: flex;">
-    <img src="images/mdoule_405nm.jpg" alt="Example Image 3" width="32%">
-    <img src="images/module_512nm.jpg" alt="Example Image 4" width="32%">
-    <img src="images/module_512nm_closeup.jpg" alt="Example Image 4" width="32%">
+    <img src="images/fafo_closeup.jpg" alt="Example Image 3" width="45%">
+    <img src="images/fafo_alignment.jpg" alt="Example Image 4" width="45%">
 </div>
+[FAFO version]
 
 ### Video
 
@@ -31,9 +30,13 @@ For detailed information on the design, construction process, and underlying pri
 The device was constructed in FreeCAD, feel free to take a look or reuse any components within the project.
 
 <div style="display: flex;">
-    <img src="images/cad_model.jpg" alt="Example 4 - Optical Cavity with Standing Waves" width="96%">
+    <img src="images/cad_model_fafo.png" width="80%">
 </div>
+[FAFO modified version]
 
 ### FAFO Modifications
 - We are using a different lens (Thorlabs `CAY046`). This lead to the need to change the mechanical dimensions quite a bit.
-- We are aiming to build the module using a 623nm red laser diode.
+  - Our module is longer to achieve good coupling efficiency with the selected fiber and lens.
+  - A bit wider for the bigger lens diameter.
+- We are using a 635nm red laser diode.
+- The lid has M6 mounting holes for optics breadboards.