WiSer: Wireless Serial Bridge

2024-02-09 | By Bitmerse LLP

License: Attribution Serial / UART Serial Cables Wireless ESP32

WiSer empowers you to create a seamless, wireless peer-to-peer serial connection between two devices. Whether you’re debugging code, logging data, updating firmware, or transferring files, say goodbye to the hassle of USB cables, unreliable Wi-Fi routers, or fussy Bluetooth setups. Engineered for simplicity and efficiency, WiSer eliminates the need for software, drivers, or any setup complexities. To your devices, it’s simply a cable. WiSer serves as a wireless alternative to FTDI or CP2102-based USB to TTL converters. Connect the USB module to your computer, link the TTL module to your target device, open your preferred serial terminal software, and experience the freedom to move around while you work!

Connections of WiSer devices

Accessing serial port of Raspberry Pi using WiSer

WiSer is fully open source and works with a wide range of devices and operating systems. Whether you’re working on a Windows, Linux, Mac, or Android device—and whether you prefer PuTTY, Tera Term, screen, or something else—it provides a convenient, reliable solution for hassle-free serial communication.

For Developers, Engineers, and Hobbyists Alike
Serial interfaces aren’t going anywhere, and the list of possible WiSer applications continues to grow. Examples include…

Wireless programming and debugging of microcontrollers like Arduino, ESP8266, and ESP32
Remote control and monitoring of robotics
Remote configuration of embedded systems
Wireless data logging and telemetry
Remote access to industrial equipment
Home automation and smart-home applications
Remote control of drones and RC vehicles
Wireless access to GPS and radio modules
Wireless communication with energy-monitoring systems
Wireless barcode-scanner integration
Wireless remote control of appliances
Wireless communication between two computers

Programming ESP32 Dev Kit using WiSer

Features & Specifications

Based on ESP32-S2 Wi-Fi SoC
No driver installation required
Provides virtual serial port on host
Targeted for modern devices with USB Type-C ports
Compatible with Windows, Linux, Mac, and Android
Peer-to-peer wireless communication over 2.4 GHz
Supported baud rates: all standard and custom rates up to 921,600 baud
Supported data bits: 6-bit, 7-bit, 8-bit
Supported parity types: NONE, ODD, EVEN, MARK, and SPACE
Supported flow control: software (XON/XOFF), hardware (RTS/CTS), and None
Supported stop bits: 1-bit, 1.5-bit, 2-bit
Equipped with DTR control pin
RX, TX, and CONN indicator LEDs
"FIND PAIR" button to locate the paired device (useful when deploying multiple WiSer devices)
"BOOT" button to update ESP32-S2 firmware
Fully open-source
Physical dimensions
- WiSer-USB: 37.8 x 20.4 x 8.2 mm (35.8 x 14.4 x 4.7 mm without enclosure)
- WiSer-TTL: 36.5 x 38.4 x 9.8 mm (28 x 29 x 4.3 mm without enclosure or header pins)

Host-to-Host Communication

WiSer has a dedicated SKU variant that allows communication between two PCs wirelessly using USB ports. Just plug one WiSer-USB into PC-1, and another into PC-2, and start chatting wirelessly using any third-party serial terminal software. But that's not all! The WiSer kit isn't just limited to PC-to-PC communication. It opens up many possibilities, allowing you to effortlessly connect two Raspberry Pis or even your PC with a Raspberry Pi.

Wireless communication between 2 PCs using WiSer

Open Source

WiSer is a fully open-source project. Its design files, source code, and documentation are already published on GitHub. Our goal is to empower users by making it as easy as possible to program, understand, customize, and troubleshoot WiSer.

Documents
WiSer Quick Start Guide
WiSer Product Manual
WiSer Spec Sheet