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WSAL15823 – E-Paper ESP32 Driver Board/en

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Version vom 6. September 2026, 00:33 Uhr von JWTechPublisher (Diskussion | Beiträge) (Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex)
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Documentation notice: This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.

Summary

The board drives various Waveshare SPI e-paper raw panels and provides wireless content updates over WiFi or Bluetooth. It is based on an ESP32, supports Arduino development, and ships with an open-source e-paper driver preinstalled.

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Technical overview

  • Key specifications: 5 V operating voltage, current draw approx. 50–150 mA; dimensions 29.46 × 48.25 mm; 4 MB flash, 520 KB SRAM, 448 KB ROM.
  • Pin mapping (fixed): DIN→P14 (SPI MOSI), SCLK→P13, CS→P15, DC→P27, RST→P26, BUSY→P25. No user configuration required for these connections.
  • Two switches: Switch 1 selects the resistor value depending on panel model (0.47 Ω for specific models, otherwise 3 Ω); flip if display quality is poor. Switch 2 toggles USB-UART power; when OFF, program upload is not possible.
  • Demos: local, Bluetooth, and WiFi demos are available in the Resources section; Android app source code and APK are included in the package.
  • Image processing: two algorithms – color-scale method and Floyd-Steinberg dithering – are selectable in the BT/WiFi demos.
  • Supported formats: BMP, JPEG, GIF, PNG and other common image files.
  • Bluetooth standard: 4.2 with BR/EDR and BLE; WiFi: 802.11b/g/n.
  • Typical applications: electronic price tags, name cards, and serial information displays with wireless image refresh.

Notes and version constraints

  • Panel-specific configuration: The correct resistor value depends on the exact panel model; when uncertain, set switch 1 to “A” (3 Ω) and flip if display issues occur.
  • Older panel versions: Demos reference the latest panel version; for older versions, check the label on the panel’s back to determine if a different demo is needed.
  • Driver selection: Serial chip differs by production date (pre-July 2022: CP2102, post-July 2022: CH343). Install the matching driver.
  • Mac users: If the board is detected but not recognized by Arduino IDE, review system security settings and driver installation.
  • Bluetooth scan in app: If no devices are found, enable location services and rescan.
  • No pricing, warranty, certifications, or safety claims exist in the source material – these topics were intentionally omitted.

Source and revision record

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