Add circuit tutorials: Arduino Uno schematic, ESP32 PCB routing, ESP32 module schematic, LED letter display#767
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Add docs/tutorials/esp32-module-schematic.mdx with a hardware-academy-style schematic-only circuit for the ESP32-D0WDQ6 SoC. The tutorial covers: - ME6211C33 3.3V LDO (JLCPCB basic part) with input/output decoupling - 40 MHz crystal with 10pF load capacitors per ESP32 datasheet - CH340C USB-to-UART bridge (built-in oscillator, no external crystal needed) - Per-pin decoupling network for all ESP32 power domains - EN/BOOT tactile buttons with 10k pull-ups - 2.4GHz chip antenna with pi-network matching - Auto-reset circuit via DTR/RTS coupling capacitors for esptool Includes full bill of materials and key design notes. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Friendly nudge 🙂 — this is ready for review whenever you have a moment. CI is green and I'm happy to address any feedback. Thanks! |
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Summary
This PR adds four circuit tutorial MDX files to cover the open bounty issues:
Arduino Uno Schematic (
arduino-uno-schematic.mdx): ATmega328P with ATmega16U2 USB-serial, 16 MHz crystal, decoupling capacitors, RESET button, ICSP header, and standard Arduino pin headers. Schematic only usingroutingDisabled.ESP32 PCB Layout and Routing (
esp32-pcb-routing.mdx): Full ESP32-D0WD development board with pcb_x/pcb_y placement on all components, 0402/0603 footprints, decoupling network, flash memory, PSRAM, antenna pi-network, and copper routing.ESP32 Module Circuit Schematic (
esp32-module-schematic.mdx): Hardware-academy-style bare ESP32-D0WDQ6 SoC schematic with ME6211C33 LDO (JLCPCB basic), CH340C USB-serial (integrated oscillator), 40 MHz crystal with 10 pF load caps, auto-reset via DTR/RTS coupling capacitors, EN/BOOT buttons, and chip antenna with pi-network matching. Schematic only.Draw Any Letter with LEDs (
draw-any-letter-leds.mdx): Reusable<LedLetter />component that renders any capital letter A–Z using a 5×7 grid of 0603 SMD LEDs with 220 Ω series resistors. Math-driven PCB and schematic placement with configurablespacingparameter.Issues
fixes #42
fixes #44
fixes #47
fixes #50
/claim #42
/claim #44
/claim #47
/claim #50
Test plan
bun run build)🤖 Generated with Claude Code