Add ESP32 PCB Layout and Routing tutorial (fixes #595)#605
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Expands the placeholder tutorial into a complete guide covering: - Component selection and specifications - Circuit theory and current calculations - Step-by-step circuit construction in TSX - PCB layout and manufacturing files - Cost analysis ($0.73 per unit) - Extensions: multiple LEDs, different colors, capacitor persistence Fixes tscircuit#555
Complete guide covering: - Power architecture with AMS1117-3.3 LDO - USB-C with CH340G programming - Auto-reset circuit design - Crystal oscillator placement (40MHz + 32.768kHz) - PCB layout rules for WiFi antenna performance - USB differential pair routing - Manufacturing file generation - Cost analysis ($4.70 per unit) Fixes tscircuit#595
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Complete ESP32 development board tutorial. 329 lines covering power architecture, USB-C programming, auto-reset circuit, crystal placement, PCB layout rules for WiFi antenna, USB differential pair routing. Cost: $4.70/unit. Wallet: 0xdaE5d307339074A24F579dB48e7c639359D94904