Overview
1. ESP32 version: REV1
2. Wireless Internet
3. Bluetooth
4. 4 MB flash memory
5. 4 MB PSRAM TF card reader
6. 3D antenna
7. 2A battery management
8. LED indicator: There are 4 LEDs to display the battery status in real time.
9. Power button: Click once to start. Tap twice quickly to close.
10. Display: ILI9341 2.2 inches
11. Protection: short protection. Overcharge protection. Overflow
12. Button change (IO34, IO35, IO39)
Hardware Specifications
1. Chipset:ESPRESSIF-ESP32 240MHz Xtensa single-/dual-core 32-bit LX6 microprocessor
2. FLASH: QSPI flash/SRAM, up to 4 x 16 MB
3. SRAM: 520 kB SRAM, SPRAM 8M
4. KEY: Reset, BOOT, IO37, IO38, IO39
5. Dispaly: ILI9341 2.2 inch(240 x 320)
6. USB to TTL: CP2104
7. Modular interface: SD card, UART, SPI, SDIO, I2C, PWM, I2S, ADC, DACLNA pre-amplifier
8. On-board clock: 40MHz crystal oscillator
9. Working voltage: 2.3V-3.6V
10. Working current: About 43mA
11. Sleep current: 1mA
12. Working temperature range: -40 degree C ~ +85 degree C
Power Supply Specifications
1. Power Supply: USB 5V/2A
2. Charging current: 2000mA
3. Battery: 3.7V lithium battery (not included)
4. Integrated mobile power: IP5306-I2C
WiFi
1. Standard: FCC/CE/TELEC/KCC/SRRC/NCC(esp32 chip)
2. Protocol: 802.11 b/g/n/e/i (802.11n, speed up to150Mbps) A-MPDU and A-MSDU polymerization, support 0.4uS Protection interval
3. Frequency range: 2.4GHz~2.5GHz(2400M~2483.5M)
4. Transmit Power: 22dBm
5. Communication distance: 300m
Bluetooth
1. Protocol: Meet bluetooth v4.2BR/EDR and BLE standard
2. Radio frequency: With -98dBm sensitivity NZIF receiver Class-1, Class-2 & Class-3 emitter AFH
3. Audio frequency: CVSD&SBC audio frequency
Software specification
1. WiFi Mode: Station/SoftAP/SoftAP+Station/P2P
2. Security mechanism: WPA/WPA2/WPA2-Enterprise/WPS
3. Encryption Type: AES/RSA/ECC/SHA
4. Firmware upgrade: UART download/OTA (Through network/host to download and write firmware)
5. Software Development: Support cloud server development / SDK for user firmware development
6. Networking protocol: IPv4, IPv6, SSL, TCP, UDP, HTTP, FTP, MQTT
7. User Configuration: AT + Instruction set, cloud server, android/iOS app
8. OS: FreeRT OS
Additional Information
Weight: 0.064kg
Size: 15cm x 12cm x 1cm