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| Name |
Bluno |
Beetle ESP32 |
Beetle BLE |
Romeo BLE |
Romeo BLE mini |
Bluno Nano |
| SKU |
DFR0267 |
DFR0575 |
DFR0339 |
DFR0305 |
DFR0351 |
DFR0296 |
|
Microcontroller |
ATmega328 |
ESP32 |
ATmega328 |
ATmega328P |
ATmega328P |
ATmega328P |
| BLE Chip |
TI CC2540 |
ESP32 |
TI CC2540 |
TI CC2540 |
TI CC2540 |
TI CC2540 |
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Power supply interface |
USB or DC2.1 |
USB |
USB |
USB |
USB |
USB |
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USB Powered or External (V) |
7 - 12 |
3.5 - 6.5 |
6 - 8 |
5 - 23 |
6.5 - 10 |
7 - 12 |
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Operating Voltage (V) |
5V |
3.3V |
5V |
5V |
5V |
5V |
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Bootloader |
Arduino UNO |
Firebeetle ESP32 |
Arduino UNO |
Arduino UNO |
Arduino UNO |
Arduino UNO |
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Flash(KB) |
32 |
16M |
32 |
32 |
32 |
32 |
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SRAM(KB) |
2 | 520 | 2 | 2 | 2 | 2 |
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Analog pins |
6 | 4 | 4 | 8 | 8 | 8 |
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Digital pins |
14 | 4 | 4 | 14 | 4 | 12 |
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UART |
1 | 1 | 1 | 1 | 0 | 1 |
| I2C | 1 | 1 | 1 | 3 | 1 | 1 |
| SPI | 1 | 1 | 1 | 1 | 0 | 1 |
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Download Mode |
Micro USB, Wireless |
Micro USB |
Micro USB, Wireless |
Micro USB, Wireless |
Micro USB, Wireless |
Micro USB, Wireless |
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Maximum transmission distance (M) |
30 |
30 | 30 | 70 | 30 | 50 |
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Arduino UNO Compatible |
√ |
× |
√ |
√ |
× |
× |
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Master/slave switch |
√ |
√ |
√ |
√ |
√ |
√ |
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Bluetooth passthrough |
√ |
√ |
√ |
√ |
√ |
√ |
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Bluetooth 4.0 wireless program |
× |
× |
√ |
√ |
× |
√ |
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iBeacons |
√ |
√ |
√ |
√ |
× |
× |
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Bluetooth HID |
√ |
× |
√ |
√ |
√ |
√ |
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App Control |
√ |
√ |
√ |
× |
√ |
√ |
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Dimension(mm) |
75*54 |
35*34 |
28.8*33.1 |
94*80 |
45*38.5 |
53*19 |
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Weight (g) |
50 g | 12 g | 10 g | 62 g | 25 g | 17 g |
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Price($) |
$24.9 |
$14.9 |
$14.9 |
$39.5 |
$25.9 |
$24.9 |
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Key Features |
can directly connect with app, no pair need |
Integrate a Dual-Core ESP-WROOM-32 module. Support MCU and Wi-Fi &Bluetooth dual-mode communication. V shaped gilded I/O interface, can be sewn on clothes directly. |
Mobile BLE APP Connection Support. V shaped gilded I/O interface, can be sewn on clothes directly. |
Mobile BLE APP Connection Support. Two way H-bridged Motor Driver with 2A maximum current and wireless socket. |
Mobile BLE APP Connection Support. 1.2A single-channel continuous drive current and 3.2A current H-bridge Motor Driver interface. |
Can upgrade BLE firmware via USB, integrate with mobile Bluetooth into a star network without pair |
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| Name | Bluno Mega 2560 | Bluno Mega 1280 | Bluno M3 | Bluno M0 | FireBeetle BLE4.1 | FireBeetle ESP32 |
| SKU | DFR0323 | DFR0306 | DFR0329 | DFR0416 | DFR0492 | DFR0478 |
| Microcontroller | Mega2560 | ATmega1280 | STM32 F103RET6 | NUC123ZD4AN0 | ATMEGA328P | ESP32 |
| BLE Chip | TI CC2540 | TI CC2540 | TI CC2540 | TI CC2540 | TI CC2540 | ESP32 |
| Power supply interface | USB or DC2.1 | USB or DC2.1 | USB or DC2.1 | USB or DC2.1 | USB | USB |
| USB Powered or External (V) | ||||||
| Operating Voltage (V) | 5V | 5V | 3.3V | 5V | 3.3V | 3.3V |
| Bootloader | Arduino Mega2560 | Arduino Mega1280 | Bluno M3 | Bluno M0 | Arduino Pro or Pro Mini | FireBeetle-ESP32 |
| Flash(KB) | 256 | 128 | 512 | 68 | 32 | 16M |
| SRAM(KB) | 8 | 8 | 64 | 20 | 50 | 520 |
| Analog pins | 16 | 16 | 11 | 6 | 6 | 5 |
| Digital pins | 54 | 54 | 39 | 31 | 14 | 10 |
| UART | 4 | 4 | 5 | 1 | 1 | 1 |
| I2C | 2 | 2 | 1 | 1 | 1 | 1 |
| SPI | 1 | 1 | 2 | 1 | 1 | 1 |
| Download Mode | Micro USB, Wireless | Micro USB, Wireless | Micro USB, Wireless | Micro USB, Wireless | Micro USB | Micro USB |
| Maximum transmission distance (M) | 30 | 30 | 30 | 30 | 30 | 50 |
| Arduino UNO Compatible | √ | √ | × | × | × | × |
| Master/slave switch | √ | √ | √ | √ | √ | √ |
| Bluetooth passthrough | √ | √ | √ | √ | √ | √ |
| Bluetooth 4.0 wireless program | √ | √ | √ | √ | √ | × |
| iBeacons | √ | √ | √ | √ | √ | √ |
| Bluetooth HID | √ | × | √ | √ | × | × |
| App Control | √ | √ | √ | √ | √ | √ |
| Dimension(mm) | 100*53 | 100*53 | 68.7*31.3 | 68.5*53.4 | 58*29 | 24*53 |
| Weight (g) | 45 g | 45 g | 30 g | 30 g | 20 g | 24 g |
| Price($) | 29.9 | 19.9 | 29.9 | 24 | 18.9 | 24.9 |
| Key Features | Mobile BLE App Support. Compatible with all Arduino Mega pins. Flash capacity: 256KB (4k for bootloader) | Mobile BLE App Support. Compatible with all Arduino Mega pins. Flash capacity: 128KB (4k for bootloader) | All 39 Digital I/O Pins can enable External Interrupt. 5 Serial Port. | The only ARM Cortex-M0 Arduino Microcontroller that supports 5V standard logic level. IIS interface supply. Wav files play & record support. |
Support KISS connection (approach connection).
Support Bluetooth 4.1 multiple device cascade (maximum:4)
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Integrate a Dual-Core ESP-WROOM-32 module. Support MCU and Wi-Fi &Bluetooth dual-mode communication. |
