Introduction

Are you still using twisted pair cables for long-distance signal transmission? Are you still fighting against the hard and thick shielding wire? Are you still reducing the baud rate repeatedly to ensure stable transmission?
Now, optical transmission has arrived. Not afraid of electromagnetic interference, completely electrically isolated DFRobot Gravity: UART fiber optic communication module can run up to 2000000 baud at any time without being affected by distance, up to a maximum distance of 10km
Only a pair of single-mode optical fibers priced less than half of shielded twisted pair cables are needed to achieve fast communication over long distances without interference. Sharing cable trays with strong electricity is not a problem at all, and lightning resistance is also not a problem. Passive splitters can also be used to achieve a pair of multi star networking
Safety Warning
The optical communication module emits 1310nm invisible infrared laser, but direct exposure to the naked eye can still cause injury
Do not look directly at the laser emission port when powered on. It is recommended to plug in the fiber before powering on

Product Parameters

Supply voltage: 3.3V~5V
Signal voltage: 3.3V~5V
Maximum speed: 2000000 baud
Communication distance: 10km
Working wavelength: 1310nm
Fiber type: Single mode fiber
Fiber optic interface: SC
Working temperature: 0~70 ℃
Interface and pins

User Guide

Hardware preparation
To build a fiber optic communication system, you need to prepare at least the following hardware
TEL0153 fiber optic communication module x2
Single mode dual core fiber SC interface

Wiring Instructions

Taking MCU connected to remote sensors through fiber optic modules as an example