Milling PCBs + Xbee replacement
@kennethlimcp
Milling PCBsBasics + usefulness + issues
How it works• Milling Concept • FR4 Copper board • High-speed spindle
• GERBER files
Usefulness• Rapid circuit prototyping
• Minimal cost • Easy to setup and use
• 2 layer achievable
Common issues• Blunt cutter • high wastage • “extra” copper plane • Supervision required • manual via linkage
Voltera
Xbee replacementWhat + Why + Challenges
JN5168 from NXP
Why• MCU + RF transceiver in 1 • Small form factor • FCC-Certified • Low cost • Supports various protocol (Zigbee, 6LowPan…)
Similar Concept• bluz.io • Using Nordic nrf51422 module
• Basically a breakout board + friendly form factor
Challenges• Documentation is everywhere
• Have to “reverse-engineer” • Bootloader not open source • Need to use proprietary software
• own footprint
Questions?@kennethlimcp
Glossary• LPKF S103 PCB machine
• Voltera
• JN5168 module
• Meshbee module
• bluz.io
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