WAVESHARE 31523 ESP32-P4 Touch Circular LCD Screen Development Board, Spec: 4 inch

1. High-performance MCU with RISC-V 32-bit dual-core and single-core processors
2 Powerful image and voice processing capabilities, image and voice processing interfaces including JPEG encoder/decoder, pixel processing accelerator (PPA), image signal processor (ISP),264 video encoder
3. 32MB PSRAM stacked inside the chip package, 32MB Nor Flash integrated outside the package
4. Common peripheral interfaces out on the board include MIPI-CSI, MIPI-DSI, USB 2.0 OTG HS, SDIO 3.0 TF card, dual microphones (with echo cancellation), speaker terminals, and RTC battery terminals, etc.
5. 2 x 20 pin headers brought out on the board with 28 remaining programmable GPIO interfaces brought out
6. Security mechanisms: secure boot, Flash encryption, hardware encryption accelerator, and hardware random number generator. It supports hardware access protection, which can implement access permission management (APM) and permission separation
7. Can be applied to scenarios such as indoor environmental monitoring/digital dashboard/smart/computer performance monitoring, etc.
8. Onboard ES8311 audio codec chip and ES7210 echo cancellation circuit, meeting daily audio application scenarios
9. Highly integrated, powerful performance, using ESP32-P4-Core module integrated design, built-in ESP32-P4, 32MB Nor Flash
10. 170 degree ultra-wide viewing angle, excellent display performance, high contrast, high viewing angle
11. Supports 10-point touch, intuitive operation and rapid response are deeply integrated, making development efficient and convenient
12. Supports mainstream AI platforms, and can be connected to online large model platforms such deepseek

Screen parameters:
1. Resolution: 3.4 inch: 800 x 800 pixels; 4 inch: 720 x 720 pixels.
2. Color gamut: 3.4 inch: percent 70 NTSC; 4 inch: percent 60 NTSC
3. Contrast ratio: 1200:1
4. Touchscreen chipset: GT9271
5. Communication interface: MIPI 2-lane
6. Brightness: 3.4 inch: 300 cd/m2; 4 inch: 350 cd/m2
7. Dimensions: 3.4 inch: 11.5 x 11.5 cm; 4 inch: 12.6 x 12.6 cm
8. Display size: 3.4 inch: 8.76 x 8.76 cm; 4 inch: 10.152 x 10.152 cm
9. Operating temperature: 0-60 degree celsius

Product package: display × 1; 4-pin cable × 2; speaker × 1