| Product | Beetle | Beetle CM-32U4 | Beetle ESP32-C3 | Beetle ESP32 | Beetle BLE |
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| SKU | DFR0282 | DFR0816 | DFR0868 | DFR0575 | DFR0339 |
| Microcontroller | ATmega32u4 | ATmega32u4 | ESP32-C3-MINI-1U | ESP-WROOM-32D | Atmega328p |
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CPU Frequency |
16MHz | 16MHz | 160MHz | 240MHz | 16MHz |
| SRAM | 2.5KB | 2.5KB |
400KB
8KB RTC SRAM
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520KB | 2K |
| ROM | 1KB | 1KB | 384KB | 448KB | 1KB |
| Flash | 32KB | 32KB | 4MB | 16MB | 32KB |
| IO Pins | 10 | 11 | 13 | 12 | 12 |
| Analog Input | 5 | 2 | 6 | 4 | 4 |
| UART | 1 | 1 | 2 | 1 | 1 |
| I2C | 1 | 1 | 1 | 1 | 1 |
| USB Socket | Micro USB | Type-C | Type-C | Micro USB | Micro USB |
| Dimension | 20*22mm | 22*20.5mm | 25*20.5mm | 35*34mm | 28.8*33.1mm |
| Features | Beetle is a low-cost micro Leonardo controller for electronics enthusiasts. It has V-shaped large-size IO ports that are very suitable for wearable projects. | Beetle CM-32U4 is the upgraded version of Beetle. It is optimized in layout and integrates Lithium battery charging management makes it extremely suitable for battery-powered projects. |
Beetle ESP32-C3 is a RISC-V processor-based controller that supports Bluetooth and WiFi. The integrated Lithium battery charging management makes it convenient to use with Li-ion battery. The supported expansion board allows it to be easily connected to a screen or peripherals. |
This Beetle-ESP32 is a simplified version of FireBeetle-ESP32 that supports Bluetooth and WiFi and integrates 16MB Flash and a dual-core processor. |
Bluno Beetle is an Arduino controller with Bluetooth 4.0. It is fully compatible with the Bluno series. |
