Capsicum | CSQ

Cost

Task	Cost (USD) per unit	Qty	Total (USD)
PCB	$3.64	5	$18.18
Components	$20.62	2	$41.24
Assembly	$15.00	2	$30.00
Case	$10.71	2	$21.41
Shipping			$11.78
TOTAL	$49.96	2	$122.61

Schedule

Timeline

Progress

April 2024: Board bring-up and debug of the first prototype PCB
March 2024: Send for manufacturing and assembly of 2 prototypes. This phase includes PCB manufacturing, component procurement, pick and place, 3D printing the cases.
December 2023: Completing the schematics with footprints, MPN and availability of assembly parts.

Quality

For future improvements

(Schematic) Use a single RGB LED for status indication
(Schematic) Add multi sheet schematics for better readability
(Schematic) Add component images and parameter graphs for better understanding
(Schematic) Add a switch to turn on and off wireless communication to fallback to legacy functionality
(Layout) Use teardrops in KiCAD 8.0
(Layout) Add fudicial markers for pick and place
(Layout) PCB - Add silkscreen pin labels for all connectors that extend outside the PCB E.g. pin headers or USB-C
(Layout, Case) Mistake proof assembly by designing the case and PCB to fit only one way, E.g.asymmetric screw holes, PCB shape and screw lugs
(Layout) Add a header male pin (GND and VUSB/VBAT) to use with nRF profiler for power consumption measurements
(BOM) Use a better quality slide switch DPDT for better tactile feedback
(Case) Make the text height bigger for LEDs and ON/OFF power switch
(Case) Add more chamfers and rounded corners for a better aesthetic
(Case) Teeth and groves - Make the teeth thicker for better strength
(Case) Teeth and groves - Add holder in the teeth to that the top and bottom case do not slide
(Case) Teeth and grooves - Include visual cues on the exterior for finger placement
(Case) PCB holder screw lug can be shorter
(Case) Add an LED slot to view the charge LED from the outside without opening the case
(Case) Add filletted poles for screw lugs and holders on the case base
(Case) Ensure charging LED is visible from the outside through a slot or a transparent window
(Case) Ensure charging cable position on the case is accessible to the power socket on-site for charging
(Case) Add more rounded corners and chamfers for timeless product design enclosures
(Case) Following DFA (Design for Assmebly), make the case easier to assemble by creating assymetric screw hole positions on the PCB and case
(Firmware) Use OTA updates for firmware
(Power) Battery - Use flat LiPo battery for a compact design
(Chore) Use Conventional Commit Messages for better git history with scopes such as firmware, case, schematic, layout, docs, bom, power, design, website, chore (CI/CD/updates).