ESP32-C3 vs ESP32-S3 — which one to go with? - ESP32

RE: ESP32-C3 vs ESP32-S3 — which one to go with?

Bhavish — Tue, 02 Sep 2025 05:20:40 +0000

Nicely explained! Do you know if the ESP32-C3’s USB Serial/JTAG can be extended to support HID with custom firmware, or is it strictly limited to debugging and flashing?

Answer to: ESP32-C3 vs ESP32-S3 — which one to go with?

Jignesh — Mon, 01 Sep 2025 04:57:18 +0000

Both the ESP32-C3 and ESP32-S3 feature native USB support, but their capabilities differ significantly. The ESP32-C3 offers a USB Serial/JTAG interface that works well for flashing, debugging, and simple USB device functions, but it’s somewhat limited if you want to go beyond basic applications.

In contrast, the ESP32-S3 includes full-speed native USB OTG support, allowing it to act as both a USB device and a USB host. This makes it far more suitable for HID or custom USB projects like keyboards, mice, or other USB gadgets.

Additionally, the S3 provides more processing power, memory, and broader library support in ESP-IDF, which translates to better reliability and flexibility for complex USB use cases.

For these reasons, the ESP32-S3 is generally the better and more reliable choice if USB functionality is a key requirement.

ESP32-C3 vs ESP32-S3 — which one to go with?

zaid — Sat, 30 Aug 2025 05:05:05 +0000

I need a board with native USB support for HID or custom USB projects, and I’m trying to decide between the ESP32-C3 and ESP32-S3. Do both support native USB, and which one is more reliable for this purpose?