https://wiki.jw-tech.eu/index.php?action=history&feed=atom&title=WSAL22668_%E2%80%93_RP2040-LCD-1.28%2FenWSAL22668 – RP2040-LCD-1.28/en - Versionsgeschichte2026-10-23T21:51:52ZVersionsgeschichte dieser Seite in JW Tech WikiMediaWiki 1.43.9https://wiki.jw-tech.eu/index.php?title=WSAL22668_%E2%80%93_RP2040-LCD-1.28/en&diff=2518&oldid=prevJWTechPublisher: Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex2026-09-06T06:06:19Z<p>Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex</p>
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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.<br />
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== Summary ==<br />
The RP2040-LCD-1.28 is a compact MCU board featuring a 1.28-inch round LCD (GC9A01A, 240×240, SPI), a QMI8658 accelerometer/gyroscope sensor, Li-ion battery connector and USB-C. It is based on the Raspberry Pi RP2040 chip with dual Cortex-M0+ cores, 2 MB flash and 264 KB SRAM.<br />
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== Related products at JW Tech ==<br />
* [https://shop.jw-tech.eu/p/WSAL22668 WSAL22668 – RP2040 MCU Board, With 1.28inch Round LCD, accelerometer and gyroscope Sensor]<br />
* [https://shop.jw-tech.eu/p/WSAL26369 WSAL26369 – RP2040 MCU Board, With 1.28inch Round LCD, Accelerometer And Gyroscope Sensor, With CNC Metal Case]<br />
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== Technical overview ==<br />
* Microcontroller: Raspberry Pi RP2040, dual-core Arm Cortex-M0+, up to 133 MHz, 264 KB SRAM, 2 MB flash<br />
* Display: 1.28-inch round IPS LCD, controller GC9A01A, 240×240 resolution, SPI interface, display size Φ32.4 mm<br />
* Motion sensor: QMI8658 with 16-bit resolution; accelerometer ±2/±4/±8/±16 g, gyroscope ±16 to ±2048 °/s<br />
* Interfaces: 2×SPI, 2×I2C, 2×UART, 4×12-bit ADC, 16 PWM channels, 8 PIO state machines<br />
* Connector: USB Type-C, supports USB 1.1 as device and host<br />
* Battery: Li-ion battery charge/discharge header for mobile use<br />
* GPIO: 30 pins via 1.27 mm pitch headers; some pins are internally wired, note this when multiplexing<br />
* Programming: drag-and-drop via mass storage over USB; firmware download available for MicroPython, C/C++ (VS Code Pico extension) or Arduino IDE<br />
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== Notes and version constraints ==<br />
* The exact GPIO mapping of internal wiring must be verified in the wiki before multiplexing.<br />
* Flashing firmware requires holding the BOOT button while connecting to the PC; incorrect procedure may cause the device to go unrecognized.<br />
* Windows 7 may lack a driver for the COM port; the source points to external GitHub resources.<br />
* Using QMI8658 in MicroPython requires manually saving a library file to the device; it is not included in the standard firmware.<br />
* Version-specific steps for compiling and flashing (e.g., toolchain choice for ARM vs. RISC-V) depend on the selected SDK version and require prior confirmation.<br />
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== Source and revision record ==<br />
* [https://www.waveshare.com/wiki/RP2040-LCD-1.28 RP2040-LCD-1.28 - Waveshare Wiki]<br />
* Source revision: 111067<br />
* Captured: 2026-09-03T04:15:32+00:00<br />
* SHA-256: <code>7343cf100330b494e1e8c36dfb44f3702b8f02d12f7050b9f82ed89d81f0910d</code></div>JWTechPublisher