DSO 150 Shell - Battery shell v2

This is recreation from scratch of the first DSO Shell + battery + usb charging
The freecad source file is included if you want to modify it

It uses a TP4056 to charge the battery and a boost converter to bring it up to ~ 8.5v
You might have to filter the DC/DC output if you see a lot of noise (not significant in my case)


The part list is the same as the first version :
* Boost : https://www.ebay.fr/itm/5PCS-MT3608-2A-DC-DC-Step-Up-Power-Apply-Module-Booster-Power-Module-for-Arduino-/201206848274?hash=item2ed8dcdb12
* TP4056 including protection cirtcuit : https://www.ebay.fr/itm/5PCS-5V-Micro-USB-1A-18650-Lithium-Battery-Charging-Board-Charger-Module-/400665524431?hash=item5d4986b8cf
* Switch https://fr.gearbest.com/diy-parts-components/pp_237508.html?wid=21

Some tips :
- You need to use support, and they are a pain to remove, but it's doable
- You'll need to clip a bit the original power switch if you installed it.
- If you use large battery like in the pics, s