Based on R7FA4M1AB3CFM, Compatible with Arduino UNO R4 Minima

| Model | R7FA4 PLUS A |
R7FA4 PLUS B |
ESP32-S3-Nano |
|---|---|---|---|
| Microcontroller | R7FA4 (32-bit ARM Cortex-M4) | R7FA4 (32-bit ARM Cortex-M4) | ESP32-S3R8 (Dual-core 32-bit Xtensa LX7) |
| ESP32-S3FN8 (Dual-core 32-bit Xtensa LX7) | |||
| Clock Frequency | R7FA4: 48MHz | R7FA4: 48MHz | ESP32-S3R8: 240MHz |
| ESP32-S3FN8: 240MHz | |||
| Storage | R7FA4: 256kB Flash, 32kB RAM | R7FA4: 256kB Flash, 32kB RAM | ESP32-S3R8: 384kB ROM, 512kB RAM, 16MB Flash, 8MB PSRAM |
| ESP32-S3FN8: 384kB ROM, 512kB RAM, 8MB Flash | |||
| Wireless communication | None | 2.4GHz WiFi + Bluetooth LE | |
| Operating voltage | Options for 5V/3.3V, support more shields | 3.3V | |
| Power input | 6~24V | 6~21V | |
| Reset button | Lateral, easier to use when connecting with shield | Vertical | |
| IO pin Output current | 8mA | 40mA | |
| Digital pins | 14 | 14 | |
| Analog pins | 6 | 8 | |
| DAC | 2 | None | |
| PWM | 6 | 5 | |
| UART | 1 | 2 | |
| I2C | 1 | 1 | |
| SPI | 1 | 1 | |
| CAN | 1 | None | |
| DC jack | Low profile, shields won't be blocked anymore while connecting | None | |
| power output header | Provides 5V OR 3.3V power output and common-grounding with other boards | None | |
| 5V power output | Up to 2000mA Max, features higher driving capability | 1000mA Max | |
| experimental board | Support, solder pad is provided for DIY interfaces to connect with experimental board | Support | |
Connecting With Sorts Of Sensors
Connecting With 2.8inch TFT Touch Shield
* for reference only, please refer to the Package Content for detailed part list


Data sheet
Manufacturer BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Responsible person BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
The set contains: MQ-5 Gas Sensor, Color Sensor, Flame Sensor, Hall Sensor, Infrared Reflective Sensor, Laser Sensor, Moisture Sensor, Rotation Sensor, Sound Sensor, Temperature-Humidity Sensor, Tilt Sensor, UV Sensor, Liquid Level Sensor. Modules compatible with Arduino
MQ-135 Gas Sensor
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Development board based on the R7FA4M1AB3CFM microcontroller and compatible with Arduino UNO R4 Minima. Waveshare R7FA4 PLUS A