BWE, Project Milestones

[ForrestErickson]

This project milestones

From start of design to first production.

• Product Functional Specification Released.
• Proof of concept, sketches, drawings, mock-ups, bread boards and wishful thinking.
• Schematics and drawings for all parts in folders, electrical and mechanical.
• Test points for manufacturing / troubleshooting especially for power.
• Update parts master to assign Part Numbers
• Schematic release V0.0.1 for initial review
• Review for manufacturing, testing, loading firmware, EMC, signal integrity, power distribution, safety, maximum temperature, etc...
• Update Schematic release V0.0.2 etc...
• Setup PCB software or train self for PCB manufacturing design rules.
• Schematic approved for start of PCB layout V0.1.xx Passes schematic design rules check.
• Assign and place PCB part number on PCB silk screen.
• Assign and place PCB version number on PCB silk screen.
• Place on the PCB silk screen a location for Serial Number to be applied at start of manufacture.
• Place on the PCB silk screen a logo.
• Place on the PCB silk screen a license or statement of copywrite.
• Enclosure design review. (Make card board mock up, Cable mock up. PCB mock up.) Make sure of clearance around all mounting hardware for screw / nut drivers.
• Enclosure design freeze for prototype PCB. PCB outline and connector placement freeze.
• PCB outline import parts and make and connector placement. Make mock up for fit to enclosure
• Milestone: PCB mechanical fit test, (PCB mock up with connector fits enclosure with cables etc...)
• Component placement for optimum routing and heat and Electromagnetic compatibility. Then route.
• Connect through hole component traces to "teardrop" pads for strength. Route so that traces can be inspected (Not under connectors for example).
• PCB passes DRC (Design rules check).
• Review of Gerbers and other files by fabricator of PCB against design rules.
• Inventory and order parts including PCB and stencils.
• Make CAD files (STEP or other) of PCB and Enclosure and test fit in an assembly. Reivew and specify any required changes.
• Build Prototype Enclosure and printed wirring assembly(s)
• Assemble first unit(s) and engineering and compliance (Safty, EMC, other) test.
• Engineering revise and release for rest of Prototype Run. Update of engineering, sales, legal documentation with photographs measurements of real hardware.
• Firmware code review and release.
• Factory Test in place.
• Changes and repeat all the above for Pilot Run (First selleable units with serial numbers etc).