Prototype v0.2

Open Issues

In V0.1, we established the rough prototype of the product, but there were some problems which we not satified, and after intense discussions, we developed V0.2

  • The infrared head-up volume is too large, which affects the overall appearance on the host, and the angle is fixed, it’s not easy to use. so cancel it.
  • Power switches, USB and other interfaces on the right side of the host will cause problems with the layout of the circuit board
Read more: Prototype v0.2

Improvement

  • Considering that the later connection to the camera, and 14 gpio is not enough, so we increase it, and use ATTiny1616 as IO extender.
  • It is inconvenient to wiring behind the main unit, and add a top bar for fix the extend PCB, this will be very helpful for simple modules that need to adjust the angle.
  • Increase magnet size for better suction.
  • The volume of the lithium battery is too large, and it will affect the appearance when placed in the main machine. And will use the iPhone 7 ‘s battery. These brand new batteries come from a supplier that specializes in repairing batteries.
  • Add DIN35 adapter.

v0.1 -> v0.2

  • Move IR to an extension module.
  • changed pogo pin from 14pin to 20pin
  • Add copper nuts on the back
  • rearranged the position and number of magnets
  • Add a 1/4 standard connector on the top for mounting expansion devices, such as IR remoter, camra module.

PCB

We made two additional pcb for testing the IO extender, and power manage.

ATTiny 1616

use attiny 1616 as extender mcu, handle indicator, beep, motor and interrupt.

AP2101

The small for testing power ic functions.

Overview

After reviewed the V0.2 prototype, we find two more issuses.

  1. the POGO PINs are more elastic
  2. For hotplug, we think the mechanical switch should more stable than magnet sensor.

Please check the V0.3 blog for detail information.