# ESP32-S3-SIM7670G-4G development board, 4G Cat-1 connectivity, WiFi, Bluetooth, GPS, OV camera, solar charging

- Page: https://sigmanortec.ro/en/esp32-s3-sim7670g-4g-development-board-4g-cat-1-connectivity-wifi-bluetooth-gps-ov-camera-solar-charging
- Price: 469.49 RON
- Availability: In stock; 1-2 zile
- Reference: 88062 · EAN: 5944675199148
- Category: Mechatronics and IoT > Development Board > IoT Development Boards, Wireless
- Package (shipping data): 0.157 kg
- Updated: 2026-09-23
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 04:49 (Europe/Bucharest)

## Description

The all-in-one IoT platform for autonomous and mobile projects combines 4G Cat-1 with WiFi and Bluetooth for fast cloud connectivity, includes multi-system GNSS for precise tracking, supports OV camera for capture and streaming, has flexible power supply via USB, 18650 battery or solar panel with integrated charging.
The Waveshare ESP32-S3-SIM7670G-4G development board is a complete multifunctional development module, designed for IoT projects and smart applications that require 4G, WiFi, Bluetooth and GNSS connectivity in a single platform.
Based on the ESP32-S3R2 microcontroller, equipped with a dual-core Xtensa LX7 processor at 240 MHz, the module integrates a SIM7670G Cat-1 that ensures stable 4G communication, with support for satellite positioning (GPS, BeiDou, GLONASS, Galileo).
The board features a variety of interfaces — USB Type-C port, microSD (TF) slot, 24-pin camera interface (compatible with OV2640 and OV5640), nano-SIM slot, as well as 18650 battery support. It includes dedicated circuits for solar power, battery charging, voltage measurement, reverse protection, and automatic switching between power sources.
Through the DIP Switch (pos. 30), the user can independently control the power supply of the camera, SIM7670G module, USB channel and HUB circuit power. Integrated LED indicators provide clear information about power, solar charging, network and battery status.
The module can function both as a portable WiFi hotspot with 4G access, and as a complete IoT platform, capable of sending data via MQTT to cloud platforms (e.g. Waveshare.cloud ).
Thanks to the high-performance integrated circuits (EA3036C, ETA6098, MAX17048G, SY81051ADC, CH343, CH334, TXB0104PWR), the board ensures efficient energy management and long-term stable operation, making it ideal for mobile, autonomous or remote monitoring applications.
Specifications:
Power supply: USB 5 V, 18650 battery (3.7 – 4.2 V), Solar panel (5 / 6 / 9 / 12 / 18 V – selectable via jumper)
Logic level: 3.3 V
Microcontroller: ESP32-S3R2, dual-core Xtensa LX7, 240 MHz
Memory: 512 KB SRAM, 384 KB ROM, 2 MB PSRAM, 16 MB External Flash
Communication module: SIM7670G – LTE Cat-1, with GNSS support
LTE bands:
FDD: B1/B2/B3/B4/B5/B7/B8/B12/B13/B18/B19/B20/B25/B26/B28/B66
TDD: B34/B38/B39/B40/B41
Transfer rate: 10 Mbps (DL) / 5 Mbps (UL)
GNSS: GPS / BeiDou / GLONASS / Galileo
Additional connectivity: WiFi 2.4 GHz (802.11 b/g/n) + Bluetooth LE 5.0
Available interfaces:
24PIN Camera (OV2640)
microSD (TF Card) slot
USB Type-C port (power / programming / communication)
Nano SIM slot
38-pin GPIO header (UART, SPI, I2C, PWM, ADC, etc.)
IPEX connectors for LTE, GNSS and external WiFi
Antenna: onboard ceramic WiFi, external LTE and GNSS antennas (IPEX)
Software compatibility: Windows XP/7/8/10, Linux, Arduino IDE, ESP-IDF
Supported network protocols: TCP / HTTP(S) / MQTT / SFTP(S) / RNDIS / PPP / ECM
Dimensions: 30.44 × 110 mm
Main circuits:
EA3036C – 3-channel DC-DC
ETA6098 – battery charging
CN3791 – solar charging
MAX17048G – battery voltage measurement
CH343 – UART-USB
CH334 – USB HUB
FSUSB42UMX – USB switch
TXB0104PWR – logic level translator
SY81051ADC – external DC-DC converter
LED indicators:
Power
Battery reversal
Solar charging
Network status
RGB WS2812B (programmable)
Switches / Buttons:
DIP Switch (camera control, 4G, USB, HUB)
RESET button
BOOT button
Battery power switch ON/OFF
Specifications Table:
Category
Technical details
Exemplary
Waveshare ESP32-S3-SIM7670G-4G
Main processor
ESP32-S3R2, dual-core Xtensa LX7, 240 MHz
Memory
512 KB SRAM, 384 KB ROM, 2 MB PSRAM, 16 MB External Flash
Communication mode
SIM7670G – LTE Cat-1 with GNSS support
Supported LTE bands
LTE-FDD: B1/B2/B3/B4/B5/B7/B8/B12/B13/B18/B19/B20/B25/B26/B28/B66 LTE-TDD: B34/B38/B39/B40/B41
LTE Cat-1 transfer rate
Downlink 10 Mbps / Uplink 5 Mbps
GNSS
GPS / BeiDou / GLONASS / Galileo
Additional connectivity
WiFi 2.4 GHz (802.11 b/g/n) + Bluetooth 5.0 LE
Supported network protocols
TCP / HTTP(S) / MQTT / SFTP(S)
Dial-up protocols
RNDIS / PPP / ECM
Software compatibility
Windows XP/7/8/10, Linux (free driver for Raspberry Pi OS)
USB connectivity
Supports AT command testing, GNSS positioning, firmware update, programming
GPIO UART
Reserved pins for external control (3.3 V logic level)
Integrated interfaces
24PIN camera (OV2640 / OV5640), TF card slot, USB-C port, 38-pin header
feeding
5 V USB / 18650 battery (3.7–4.2 V) / solar panel (5–18 V, selectable)
Main integrated circuits
EA3036C (DC-DC 3 channels), ETA6098 (battery charging), MAX17048G (voltage measurement), CH343 (UART-USB), CH334 (USB HUB), FSUSB42UMX (USB switch)
LED indicators
Power, Battery reverse, Solar charging, Network status, RGB WS2812B
Antenna connector
IPEX 1 (for LTE / GNSS / WiFi, ceramic WiFi antenna included)
size
30.44 × 110 mm
Logical level
3.3V
Recommended applications
Portable IoT, 4G WiFi hotspot, facial recognition, GPS positioning, smart garden, server monitoring, industrial telemetry
Areas of use
Global – Europe, Asia, Africa, South America
Framework compatibility
Arduino IDE, ESP-IDF, MQTT ( Waveshare.cloud )
Interface:
No.
compound
Description / Function
1
ESP32-S3R2
Main microcontroller, dual-core Xtensa LX7, 240 MHz
2
SIM7670G
4G Cat-1 module with GNSS support (GPS, BeiDou, GLONASS, Galileo)
3
EA3036C
DC-DC converter with 3 output channels
4
ETA6098
Li-ion battery charging circuit
5
CN3791
Solar panel charging circuit
6
MAX17048G
Battery voltage measurement circuit
7
CH343
UART–USB converter
8
CH334
Integrated USB HUB
9
W25Q128JVSQ
16 MB external Flash memory
10
FSUSB42UMX
USB switching circuit
11
TXB0104PWR
Logic level translator
12
24-pin camera interface
Compatible with OV2640 / OV5640 modules
13
TF card slot
microSD slot for external storage
14
USB Type-C port
Power, programming and communication (ESP32-S3 / SIM7670G)
15
RESET button
Reset board
16
BOOT button
Button for entering programming mode
17
Nano SIM slot
Nano-SIM card slot (4G network)
18
Solar panel input interface
Connection to 5V/6V/9V/12V/18V solar panels
19
Onboard WiFi antenna
Integrated WiFi ceramic antenna
20
WiFi connector ESP32-S3 (IPEX 1)
Supports external WiFi antenna (by modifying pad)
21
GNSS connector (IPEX 1)
For connecting the external GNSS antenna
22
LTE connector (IPEX 1)
For connecting the external LTE antenna
23
WS2812B RGB LED
Programmable multicolor RGB LED
24
Power indicator
Power status indicator LED
25
Battery reversal indicator
Wrong battery polarity warning
26
Solar charging indicator
LED for solar circuit activity
27
Network indicator
4G connection status LED
28
Solar panel input voltage selector
Voltage selection: 5V / 6V / 9V / 12V / 18V
29
SY81051ADC
DC-DC converter for external input
30
DIP Switch
Function switch: CAM (camera), HUB (USB HUB power), 4G (SIM7670G module power), USB (USB channel)
31
Battery power switch
Battery Power On/Off
32
18650 battery holder
Integrated holder for a 18650 Li-ion battery
Pinout:
Dimensions:
Use:
Connect the board to your computer via the USB Type-C port for power and programming.
Mounts the nano-SIM card, LTE and GNSS antennas and, optionally, the OV2640 camera (also compatible with OV5640).
Configure the DIP Switches (pos. 30) to activate the camera, power the 4G module or select the USB channel.
Power the board via USB, via an 18650 battery (slot 32) or via a solar panel connected to the interface (pos. 18).
Insert the microSD card to store data or images.
Program the ESP32-S3 in Arduino IDE or ESP-IDF, using the examples provided by Waveshare (4G hotspot, MQTT, GPS tracking).
Monitor system status through network, charging and battery voltage LEDs.
Integrate the module into IoT projects, using simultaneous 4G + WiFi connections for cloud reporting or remote control.
Recommended applications:
4G Portable WiFi Hotspot
Sensor monitoring (smart garden, environment, energy)
Facial recognition and image transmission (with OV camera)
Mobile GPS systems (animal, vehicle, equipment tracking) …