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First Batch of Module PCBs and FPC's on the Way

A project log for RX-Modulus (Completely Modular Mouse)

Finally a mouse that can be freely changed, fixed and upgraded suit the user.

benwbenw 04/27/2020 at 18:530 Comments

It's certainly exciting to be finally having the first batch of prototype boards and FPC manufactured.

PCB Manufacture:

This batch features all the 0.8mm FR4 boards that that used to prototype the following:

Touch-D Module:

SMART Scroll Module:

Interfaces:

These interface boards were added to the 0.8mm panels 

The Thumb Module Interface board comes in very handy when developing an module programming and debug station

FPC Manufacture:

I got three FPC Cables made to finish off the Touch-D and SMART Scroll Modules. They were fairly easy to have made they just require three things:

FPC Design Tip:

For anyone wanting to design FPC cables I would recommend using the 'sheet metal' tools in Autodesk fusion 360. It works a treat and lets you route the FPC in 3D then will automatically generate the flat view with dimensions. 

But why design a custom FPC when you can buy them?

The problem with off the shelf FPC cables is at they aren't as flexible as one would think. I purchased quite a few and found they had a bend radius of about 3mm. Now this does sound good big but lets add some preservative:

The above image is the Internals of the Touch-D module each PCB seen is 0.8mm FR4 and all fixings are very small M1.6. Once you start having 3mm bend rads on all FPC cables you would find that there is no space of the module the 'sweep'. 

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