AliExpress alternative to the Cheap Yellow Display with Bluetooth

It shares the same 2.8-inch touch display, yellow PCB form factor, and CYD branding, but runs on a different chip, the ESP32-C5 (RISC-V, WiFi 6) rather than the classic ESP32 (Xtensa LX6, 2.4GHz). That chip difference makes existing CYD firmware and tutorials non-compatible without rewriting. The form factor matches; the software ecosystem does not.

No, the ESP32-C5 uses a RISC-V core, while all mainstream CYD projects and ESPHome device packages are compiled for the Xtensa LX6 core on the original ESP32. You would need to port firmware manually or wait for the community to publish C5-specific configs. If your goal is plug-and-play compatibility with existing tutorials, choose a standard ESP32-based CYD instead.

Yes, the ESP32-C5 supports WiFi 6 (802.11ax) on both 2.4GHz and 5GHz bands, which the original CYD cannot do. This matters if your router is 5GHz-only or if you need higher throughput for OTA updates. For most sensor or display projects on a standard home network, 2.4GHz is sufficient and the 5GHz capability adds no practical benefit.

No, the ESP32-C5 supports BLE only; classic Bluetooth (BR/EDR) is absent from the chip. The original CYD's ESP32 supports both classic Bluetooth and BLE. If your project needs to communicate with a classic Bluetooth device, such as a serial GPS module, an older speaker, or a Bluetooth 2.x sensor, the C5 variant is not a suitable substitute.

The standard CYD has no PSRAM and only 4MB of Flash, which constrains framebuffer size and limits how much data can be held in memory at once. The C5 module's 8MB PSRAM allows larger display framebuffers, in-memory image caching, and more complex application state, relevant for custom UI projects or data-logging dashboards. For simple sensor readout or single-screen displays, the extra memory is unlikely to make a noticeable difference.

Yes, the ESP32-C5 includes a 15.4 MHz radio that supports ZigBee and Thread, and Espressif's SDK includes Matter support for the C5 series. This makes the module suitable for building Matter-over-Thread or Matter-over-WiFi devices without adding an external radio chip. However, this is a relatively new chip and community library support is still maturing compared to the original ESP32's extensive ecosystem.