This is a case for a raspberry pi 3 which can be used as a hotspot for picamtracker device.

It has space to include 2 buzzers and 1 LED, as well as 2 switches to be able to safely shutdown the pi.

Edit : Added the F3X version of top cover.

The top cover has been designed using Onshape.

You can copy and modify it using this link : https://cad.onshape.com/documents/cc62465e442c9da055998111/w/42964b27d058e4a7e1a4cd20/e/7544b7a622949db002ed416c

Connections :

• Buzzer signal has to be connected to GPIO17, other pins for the buzzer goes to the ground and 5V
• The pushbutton is used to shutdown the pi. It should be wired between the ground and GPIO21
• The LED is used to view the status of the pi. LED is ON when pi is started and OFF once shutdown procedure is finished. It is wired (with suitable resistor) between the ground and GPIO14 (TXD)

The switch is used to power the pi (it is not used in the photos). I plan to add a 5V regulator to be able to almost any lipo / Li Ion battery to power the PI externally.