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# Components Selection
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## Proposal
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## Block diagram
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- [Preliminary block
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diagram](https://www.ohwr.org/project/f-watch/uploads/6c3835bbb76739c24e7b5389c27de657/block_diagram.pdf)
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- [Block diagram Freewatch
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V1](https://www.ohwr.org/project/f-watch/uploads/e397f7e42ff6226c77742f27c8cf8db4/block_diagram_l.png)
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(source in the repo)
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-----
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## Electronics components
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The total price of the electronics components is around 84 Euro ($112,
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CHF 102).
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This price does not include the PCB, backlight, assembly costs nor the
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watch case.
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<table>
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<tbody>
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<tr class="odd">
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... | ... | @@ -275,10 +284,14 @@ |
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</tbody>
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</table>
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### Backlight
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-----
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## Backlight
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Use 0.5 or 1mm plexiglas sheet behind the LDC with four white LEDs.
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Here is a cheap plexiglas sheet
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supplier:
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http://www.plexiglas-shop.com/CH/fr/plexiglas-folie-5m9m5apyxic/plexiglas-folie-blanc-99532-gt-1-0-mm-iqq6a1wurpd~p.html
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-----
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