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rs232 module

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rs232 module Customers Reviews

  • Not cheap, but does the job well.

    posted by rigorka

    This is certainly the most simple way to connect your RS232 equipment (for example, the UPS management port) to your Arduino.
    The best way to test it with Arduino is by using the SoftwareSerial library. This allows you to use Arduin's primary RX/TX pins to send/receive the debug output to your computer via USB, while SoftwareSerial is used to get the RS-232 data from this device.
    Straightforward solution for those needing RS232 interface but feeling to lazy to put together their own level converter.
  • Excellent RS232/TTL converter, does what it says on the tin

    posted by heypete

    Simple, easy to connect, and works exactly as expected.Mounting holes in the PCB make it easy to mount in an enclosure.I connected the inputs and outputs to an oscilloscope, and the MAX3232 produces sharp, clean, well-defined signals on both the RS232 and TTL sides.The TTL output voltage matches Vcc (that is, set Vcc to 3.3V and the TTL output signal range will be 0-3.3V. Set it to 5V and it will be 0-5V.). This makes it easy to match the output voltage to your TTL circuits.The RS232 output voltages range between -5/+5V regardless of Vcc voltage (the chip has built-in charge pumps to increase the voltage for the RS232 transmitters). In compliance with the RS232 standard, it can tolerate RS232 input voltages of -25/+25 volts.While most people would just use the pins marked TX/RX to connect one RS232 device to one TTL device, the MAX3232 supports a second bi-directional channel.
    The board is contains a MAX3232 RS232-to-TTL converter and the necessary capacitors, a few LEDs to indicate when the chip is sending data, a female DE9 connector to connect to your RS232 device, and a 4x2 pin header to connect to your TTL device. Simple and handy.The primary bi-directional channel is connected to pins 2 (RX) and 3 (TX) on the DE9 connector (RS232) and to the TX and RX pins on the board, respectively. Be sure you connect the pins correctly: connect the TX pin on the MAX3232 board to your TTL device's RX pin, and the RX pin on the MAX3232 board to your TTL device's TX pin. Connect Vcc and GND to your TTL device.The second bi-directional channel is not connected to the DE9 connector and is only accessible on the pin headers. Connect your RS232 device's RX and TX pins to R2O ("RS232 out, channel 2") and R2I ("RS232 in, channel 2"), respectively. Connect your TTL device's RX and TX pins to T2O ("TTL out, channel 2") and T2I ("TTL in, c
    This board saves makes it easy to connect an RS232 device to a TTL circuit using a MAX3232 chip. I highly recommend it.The MAX3232 in this board functions the same as the very common MAX232 chip which only runs on 5.0V; the difference is that the MAX3232 runs on 3.0-5.5V input which makes it great for 3.3V TTL circuits.
  • RS232 Serial port to TTL converter

    posted by hrpanchal

    It is easy to use this converter. simple, tiny and good thing is that it comes with necessary plugin wires for power and data.If you want to hookup your micro-controller to other micro-controller devices, this converter works excellent. I recommend to buy this product as easy to setup. Also, there are two LED on board for Rx/Tx which shows transfer of data.
    very useful for microcontroller
    simple, tiny and good thing is that it comes wit
  • Charming!

    posted by stenogrizz

    A lot of cons! Just to mention:
    - Tiny size. It is a great advantage if you want to build something portable.
    - Great build quality.
    - Working from the start with default settings. Just search for 'linvor' bluetooth device with your smartphone or computer.
    - Can be configured for any UART speed, bluetooth device name, etc.
    You can find full documentation with AT command set and typical wiring in PDF format searching for "EGBT-046S" with google. Searching for "RF-0417C" will give you a PDF file with footprint sizes.
    Great module for every electronics amateur! With no doubt will buy some more for my personal electronics projects. As a testing project for that module I've build portable RS232-Bluetooth converter for my Garmin eTrex series GPS unit. And it worked like a charm.
  • Works out of the box

    posted by julienvdg

    Works out of the box on linux (not tesed on windows, sorry)The colored cables makes it easy to follow the connexions from the labels on the pcb to the other ends.Two available power supply 5V and 3.3V for maximum compatibility !
    The header are folded so you can plug it on your barebord direclty and use an USB cable.They could have included a short USB Cable... but it woudn't be that cheap then...
    Nice to have, don't miss it !
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