M5Stamp RS485 Module

The M5Stamp RS485 Module from M5Stack is an RS485 communication expansion board that converts the 3.3V TTL level of the MCU serial port into a differential signal compatible with the RS485 standard. With a compact size of just 20mm x 4.6mm x 23mm, it can be integrated into various embedded devices for RS485 communication interface expansion. Suitable for RS485 sensor data acquisition, Modbus bus node communication and other applications. Features

* SP485EEN-L/TR(RS485 transceiver) * 2x RS485 interface expansion (parallel), can be connected to two devices at one time * Red LED indicator * The PWR485 interface supports 9-24V DC input, internal DCDC step-down to 5V to power the module and main control. * Baud rate:

* Stable communication baud rate: 9600bps/115200bps * Maximum communication baud rate test: 128000bps

* Multiple soldering options:

* Three types of soldering options are available (SMT, DIP, Jumper wire), * With high-temperature resistant plastic enclosure, Peak temperature = 230℃

Package Contents

* 1x STAMP PWR485 * 1x HT3.96 4-pin female connector * 2x HY2.0 4-pin female connector (blue + white) * 1x HEX Key 1.5mm Specifications RS485 Transceiver SP485EEN-L/TR Input Voltage PWR485 interface Supports 9-24V input power TTL side input voltage 5V Recommended baud rate 9600bps/115200bps Operating Current DC5V@3.2mA DC12V@2.8mA DC24V@2.1mA Input Logic Level 3.3V Net Weight 5.1g Gross Weight 7.3g Product Size 20*4.6*23mm Package Size 93*138mm Resources

* Product Wiki * Schematic * Dimensions * Arduino Example:

* UART TEST

* Libraries:

* ArduinoModbus Lib * Arduino485 Lib