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M5StickC RS485 HAT AOZ1282CI
Description RS485-HAT is a TTL to RS485 converter for M5StickC. Among M5stack products we have 5 items that include TTL to RS485, they are RS485 unit...
Description
RS485-HAT is a TTL to RS485 converter for M5StickC. Among M5stack products we have 5 items that include TTL to RS485, they are RS485 unit, RS485 HAT, PLC, LAN, BASE26 they have different input voltage, vary from 5V - 12V.
In this RS485-HAT, it consists of a 485 automatic transceiver circuit and a DC-DC buck circuit which can drop an input 12V to 5V.
RS485 is a standard defining the electrical characteristics of drivers and receivers for use in serial communications systems, widely used in the industrial field. multipoint systems are supported.
It is used to convert the TTL standard to the RS485 standard. If the outside serial device is RS485 standard, you can attach this hat on top of stickc, therefore, to implement the communication with RS485 device by TTL protocol.
- Built-in SP485EEN
- The built-in automatic transceiver circuit
- Built-in DC-DC buck circuit
- AOZ1282CI
- input DC 5~12 V
- BandRate up to 115200
- Program Platform: Arduino, UIFlow(Blockly, Python)
- 1x RS485 HAT
- 1x 4 Pin 3.96 Pitch Terminal
- RS485 multipoint systems
- Serial communication in industrial field.
Learn
Links
- Datasheet - SP485EEN
Code
1. Arduino IDE
To get complete code, please click here.
#include <M5StickC.h> /* This demo is for RS485 Hat uart write and read , AutoSend Hello M5! AutoReceive and diaplay on screen */ void setup() { M5.begin(true,true,true); Serial.begin(115200); // Serial2.begin(unsigned long baud, uint32_t config, int8_t rxPin, int8_t txPin, bool invert) Serial2.begin(115200, SERIAL_8N1, 26, 0); Serial.println("RS485"); } void loop() { Serial2.print("Hello M5!"); if(Serial2.available()) { char ch = Serial2.read(); M5.Lcd.setTextSize(2); } } Pin Map
M5StickC GPIO0 GPIO26 5V GND HAT ADC TX RX 5V GNDVideo
Demo
Jargon buster
Plain-language definitions for the technical terms used above.
- ADC
- An analogue-to-digital converter reads a changing voltage and turns it into a number the microcontroller can use. It matters when connecting analogue sensors such as light, sound, or variable-resistor sensors.
- IDE
- Short for Integrated Development Environment, a program used to write, run and manage code. It matters because some learners prefer a traditional coding workspace instead of a guided notebook-style lesson.
- RS485
- RS485 is a robust wired serial communication standard often used in factories, farms, and buildings where cables may be long or electrically noisy. It matters because it lets this controller connect to industrial sensors, meters, and control equipment over longer distances than typical hobby serial wiring.
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