This RS232 to TTL Serial Interface Module is a board with the MAX3232 transceiver integrated circuit (IC). It facilitates serial communication between TTL and RS232 ports by providing the necessary electrical signal conversion.

These boards usually have a DB9 connector soldered at one end, and four header pins for jumper cables at the other end. The jumper cables enable the user to connect the wires to a breadboard or a microcontroller project board, whilst the DB9 connects directly to a COM port of a computer.

The MAX3232 IC, which comes in a 16 pin narrow SO package. It requires between 3.0 V to 5.5 V to operate and has two receivers and two transmitters. It has a maximum guaranteed data rate of 120 kbps, and the circuitry requires four 0.1µF charge-pump support capacitors. It is also compatible with the famous MAX3232 IC pins. These boards connect to systems with a UART  hence, they work with ATMEL and PIC microcontrollers.

MAX3232 RS232 Serial Port To TTL Converter Module DB9 Connector 5V RS232 to TTL + Female Serial TTL + serial modules / Brush board. This module can be used to the serial port of the microcontroller module expand DVD, router, hard drive, and other equipment to upgrade.

Features :

1. It is widely used in radio modification, phone flash, XBOX360 flash, GPS, vehicle detection, DVD flash, hard disk repair set-top box upgrade.
2.  It can be used to program STC MCU, NXP MCU, Renesas MCU, STM32 MCU, N+-2EC MCU
3. Pre-assembled compact size board
4. Suitable for use with most microcontrollers
5. Operates up to 250 kbit/s

Package Includes :

1 x RS232 to TTL Serial Interface Module

This is a RoHS compliant I2C Serial LCD Daughter board that can be connected to a standard 16×2 or 20×4 Character Display Module that supports 4-bit mode. All Character Modules sold on our site support 4-bit mode, and nearly all commercially available 16×2 and 20×4 line character modules support it too.

This board has a PCF8574 I2C chip that converts I2C serial data to parallel data for the LCD display. There are many examples on the internet for using this board with Arduino. Do a search for “Arduino LCD PCF8574“. The I2C address is 0x3F by default, but this can be changed via 3 solder jumpers provided on the board. This allows up to 3 LCD displays to be controlled via a single I2C bus (giving each one it’s own address)

Specifications and Features:

1. 5V power supply.
2. Serial I2C control of LCD display using PCF8574.
3. Backlight can be enabled or disabled via a jumper on the board.
4. Contrast control via a potentiometer.
5. Can have 8 modules on a single I2C bus (change address via solder jumpers)address, allowing.
6. Size ：41.6 x 19.2 mm.

Package Includes:

1 x IIC/I2C Serial Interface Adapter Module

Industrial USB TO RS485 Bidirectional Converter, Onboard Original CH343G, Multi-Protection Circuits And SP485EEN Chips, Providing Better Stability And Compatibility, Built-In Lightningproof Tube, Resettable Fuse, ESD And TVS Protection Circuits, Etc.

The USB Signal Can Be Converted Into A Balanced Differential RS485 Signal And The Transmission Rate Is Stable. The Reliable Speed Is 300bps ~ 3Mbps, The Transmission Distance Is About 1.2km For RS485 And About 5 Meters For USB.CH343G is a USB bus adapter chip, which can convert USB to a high-speed asynchronous serial port, supports automatic identification and dynamic self-adaptation of communication baud rate of 115200bps and below, and provides commonly-used MODEM contact signals to expand asynchronous serial ports for computers. It can upgrade a common serial device or MCU directly to a USB bus.

Features:

1. Support USB to RS485 bidirectional conversion
2. Fast communication, stable and reliable, better compatibility
3. Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightning proof & anti-electrostatic
4. Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock resistance
5. 3 LEDs for indicating the power and transceiver status

Package Includes:

1 x USB TO RS485 (B)

1 x USB-A male to female cable

1 x Screwdriver

Adafruit WCH CH9102F Friend – USB to Serial Converter, Long gone are the days of parallel ports and serial ports. Now the USB port reigns supreme! But USB is hard, and you just want to transfer your everyday serial data from a microcontroller to computer. What now? Enter the Adafruit CH9102F Friend, a version of our popular USB-Serial ‘friend’ breakouts that uses the affordable (and available) CH9102F – a ‘near pin-compatible’ to the CP2102N.

This board features the CH9102F USB-Serial chip that can upload code at  3Mbit/s for fast development time. It also has auto-reset for Arduino/ATmega328 boards so no noodling with pins and reset button pressings. The CH9102F has fairly good driver support, and for 99% of use cases is a fine replacement of the FTR232, FT231x or CP210x series. With a modern USB Type C connector, it’s ready to rock on any kind of computer

Features:

1. Board features the CH9102F USB-Serial chip that can upload code at  3Mbit/s for fast development time
2. It also has auto-reset for Arduino/ATmega328 boards so no noodling with pins and reset button pressings.
3. Works excellently with any Arduino, ESP8266, ESP32, or any other microcontroller that uses an ‘FTDI port’ for communications and upload

Package Includes:

1 x Adafruit WCH CH9102F Friend – USB to Serial Converter

Industrial Serial Server, RS232 To RJ45 Ethernet, TCP/IP To Serial, Rail-Mount Support, With POE Function(Optional)

Features: 

1.  It combines multi functions in one  including serial server, Modbus gateway, MQTT gateway, RS232 to JSON, etc
2. The module features RS232 and Ethernet port(POE function is optional)
3. The rail-mount case design, small in size, easy to install
4. It is suitable for applications like data acquisition, IoT gateway, safety & security IoT, and intelligent instrument monitoring

Specifications:

1. Product Type: Serial server, Modbus Gateway, MQTT Gateway
2. Basic Function: Bi-directional transparent data transmission between RS232 and Ethernet
3. Communication interface: RS232 port x 1, Ethernet port x 1
4. Power supply: 6 ~ 36V DC screw terminal 6 ~ 36V DC screw terminal, or PoE port
5. Isolation Protection: Power isolation, Signal isolationEthernet common network port PoE network port, support IEEE 802.3af standard
6. 10 / 100M auto-negotiation RJ45 connector, 2 KV surge protection
7. Serial port: Isolated RS232
8. Baudrate 300 ~ 115200 bps
9. Parity bit none, odd, even, mark, space
10. Data bit: 5 ~ 9 bits
11. Flow control: N/A
12. Protocol: ETHERNET, IP, TCP, UDP, HTTP, ARP, ICMP, DHCP, DNS
13. Configuration: host, web browser, device management functions library
14. Communication method: TCP/IP direct communication, VCOM
15. Operating mode: TCP server, TCP client (coexisting with TCP server), UDP, UDP multicast

Package Includes:

1 x Waveshare Industrial serial server, RS232 to RJ45 Ethernet, TCP/IP to serial, rail-mount support, with POE function

The W5100 chip is a Hardwired TCP/IP embedded Ethernet controller that enables easier Internet connection for embedded systems.

W5100 suits users in need of stable Internet connectivity best, using a single chip to implement TCP/IP Stack, 10/100 Ethernet MAC and PHY. Hardwired TCP/IP stack supports TCP, UDP, IPv4, ICMP, ARP, IGMP, and PPPoE, …, which has been proven through various applications over many years. W5100 uses a 16ytes internal buffer as its data communication memory.

Note: for more technical details go through Datasheet in the attachment section

Features & Specifications

1. Hardwired TCP/IP protocols : TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE
2. Un-attackable hardware network engine for preventing network attacks such as flooding, spoofing, injection
3. Host Interface : Direct/Indirect Bus & Serial Peripheral Interface (SPI MODE 0, 3)
4. 4 Independent hardware socket
5. Internal 16Kbytes memory for TCP/IP packet processing
6. 10BaseT / 100Base TX Ethernet PHY Embedded
7. Support Auto-Negotiation (Full & Half Duplex, 10 & 100 Based)
8. Support Auto-MDIX
9. 3.3V Operation with 5V I/O signal tolerance
10. LED outputs (TX, RX, full/half duplex, Collision, link, speed

Package Includes:

1 x WIZnet W5100