Even further reduction in PCB manufacturing cost (PCB v1.2)

• All vias changed to 0.3mm drill and 0.6mm diameter.
• This approach saves money in the production of PCBs (JLCPCB experience) - less tests is necessary.
• Waiting PCBs arrive to final tests and validation.

Lowering manufacturing cost (PCB v1.1)

• Vias with 0.2mm drill and 0.4mm diameter changed to 0.3mm drill and 0.6mm diameter.
• The first approach makes the production of PCBs much more expensive (JLCPCB experience).

First PCB release (PCB v1.0)

PCB v1.0

• Gerber files to PCB v1.0 production.
• Schematic from PCB v1.0.