Robotdyn i2c serial

Buy Robotdyn I2C Serial LCD Text Module For 16x2/16x4/20x2/20x4 LCD Board for R207.67

Buy I2C SERIAL LCD 20CH x 4L DISPLAY MODULE KS0062 for R244.95

Buy I2C SERIAL LCD DISPLAY INTERFACE BOARD MD0388 for R59.15

Feature: CH340G 5V/3.3V, USB to TTL-UART Serial Converter Universal logic level: 5V or 3.3V Package includes: 1 x USB to TTL-UART Serial Converter

Description: Brand: CJMCU This is I2C serial interface 16 bit I/O Expander Serial Module Package included: 10 x CJMCU-2317 MCP23017 I2C Serial Interface 16 bit I/O Expander Serial Module

3Pcs 5V IIC I2C Serial Interface Adapter Module For Arduino LCD1602 Description: The item is IIC/I2C serial interface Compatible for 1602 LCD Supply voltage: 5V Package included: 3 x IIC I2C Serial Interface Adapter

Buy CJMCU-2317 MCP23017 I2C Serial Interface 16 bit I/O Expander Serial Module for R184.57

Feature: CH340G 5V/3.3V, USB to TTL-UART Serial Converter Universal logic level: 5V or 3.3V Package includes: 5 x USB to TTL-UART Serial Converter

RobotDyn 3.3V/5V Compact RFID Reader Writer and NFC Module For Arduino DIY Feature:This RFID modules base on MFRC522 IC and that can read and write Mifare's tags.The microcontroller and card reader uses SPI for communication.The card reader and the tags communicate using a 13.56MHz electromagnetic field.The RFID MFRC522 module supports MF1xxS20, MF1xxS70 and MF1xxS50 tags.The RFID MFRC522 module supports contactless communication and uses MIFARE higher transfer speeds up to 848 kBd in both directions.RFID MFRC522 have compact design and small size 36x36mm.Power can supply 3.3V or 5V.This yasy for connection to board with 5V, not need power regulator for 3.3V.The antenna is built into the board. And it has a good sensitivity to a height of 25mmPackage includes:1 x RFID ReaderSketch for Arduino:// VCC----5V// GND----GND// RST----D5// SDA----D10// MOSI---D11// MISO---D12// SCK----D13#include #include RFID rfid(10,5); //D10--SDA, D5--RST unsigned char serNum[5]; unsigned char writeDate[16] ={'R', 'o', 'b', 'o', 't', 'D', 'y', 'n', '-', 'T', 'e', 's', 't', 0, 0, 0}; unsigned char sectorKeyA[16][16] = { {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}, {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}, {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},}; unsigned char sectorNewKeyA[16][16] = { {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}, {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xff,0x07,0x80,0x69, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}, {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xff,0x07,0x80,0x69, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},}; void setup(){ Serial.begin(9600); SPI.begin(); rfid.init();} void loop(){ unsigned char i,tmp; unsigned char status; unsigned char str[MAX_LEN]; unsigned char RC_size; unsigned char blockAddr; rfid.isCard(); if (rfid.readCardSerial()) { Serial.print('The card's number is: '); Serial.print(rfid.serNum[0],HEX); Serial.print(rfid.serNum[1],HEX); Serial.print(rfid.serNum[2],HEX); Serial.print(rfid.serNum[3],HEX); Serial.print(rfid.serNum[4],HEX); Serial.println(' '); } rfid.selectTag(rfid.serNum); blockAddr = 7; if (rfid.auth(PICC_AUTHENT1A, blockAddr, sectorKeyA[blockAddr/4], rfid.serNum) == MI_OK) { status = rfid.write(blockAddr, sectorNewKeyA[blockAddr/4]); Serial.print('set the new card password, and can modify the data of the Sector: '); Serial.println(blockAddr/4,DEC); blockAddr = blockAddr - 3; status = rfid.write(blockAddr, writeDate); if(status == MI_OK) { Serial.println('Write card OK!'); } } blockAddr = 7; status = rfid.auth(PICC_AUTHENT1A, blockAddr, sectorNewKeyA[blockAddr/4], rfid.serNum);

Buy RobotDyn USB-TTL UART Serial Adapter CP2102 5V 3.3V USB-A Module for R117.84

Buy RobotDyn USB to TTL UART CH340 Serial Converter Micro USB 5V/3.3V IC CH340G Module for R229.00

Buy Serial Interface Board For 1602 LCD Display - I2C/SPI for R19.95

Feature: This Nano Ethernet Shield allows you to connect the Arduino Nano to a network. It is assembled with long stackable pin headers, and don’t need to solder the headers separately. The Nano Ethernet Shield is based on the ENC28J60 Ethernet chip which provide a network (IP) stack capable of both TCP and UDP. Use the Ethernet library to write sketches which connect to the internet using the add-on module. ENC28J60 is a 10BASE-T stand alone Ethernet unit with on board MAC & PHY, 8 Kbytes of Buffer RAM and an SPI serial interface for 3.3V and 5V logics. With a small size the Nano Ethernet Shield minimizes complexity, board space and cost. Target applications include VoIP, Industrial Automation, Building Automation, Home Control, Security and Instrumentation. Shield use power 5V from Nano board and convert to 3.3V (on shield have 3.3V LDO). Package includes: 1 x Nano Ethernet Shield

Description:   This logic level converter features four high speed bi-directional 4 channels, allowing for safe and easy communication between devices operating at different logic levels.  It can convert signals as low as 1.8 V to as high as 5 V and vice versa, and its four channels are enough to support most common bidirectional and unidirectional digital interfaces, including I²C, SPI, and asynchronous TTL serial.   Package includes:   1 x Logic Level Converter

IIC/I2C/TWI/SP​​I Serial Interface Board Module Port For Arduino 1602LCD Display is available now from our US and UK warehouse Free shipping to US and UK in 3-6 business days ship to Canada, Brazil in 7-10 days in US warehouse ship to European countries in 7-10 days in UK warehouse IIC/I2C/TWI/SP Serial Interface Module Port For 5V Arduino 1602LCD Display Description: This is another great IIC/I2C/TWI/SPI Serial Interface. As the pin resources of Arduino controller is limited, your project may be not able to use normal LCD shield after connected with a certain quantity of sensors or SD card. However, with this I2C interface module, you will be able to realize data display via only 2 wires. If you already has I2C devices in your project, this LCD module actually cost no more resources at all. It is fantastic for Arduino based project. I2C Address: 0X20~0X27 (the original address is 0X20,you can change it yourself) the backlight and contrast is adjusted by potentiometer Come with 2 IIC interface, which can be connected by Dupont Line or IIC dedicated cable I2C Address: 0x27 (I2C Address: 0X20~0X27 (the original address is 0X27,you can change it yourself) Specification: Compatible for 1602 LCD Supply voltage: 5V Weight: 5g Size: 5.5x2.3x1.4cm Package included: 1 x IIC/I2C/TWI/SPI serial interface module port