Questions tagged [rs232]
RS-232 is the electrical standard used on most serial ports. Note that this standard is a +/- 15 volt system and requires a FDMI converter to make it compatible with TTL logic levels.
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Force RS-232 DTR active
I have a vending machine that has a RS232 port. I'm trying to get data through another protocol called MDB to get telemetry data, but I really think that it only outputs data through MDB if the RS232 ...
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How does using an RS232 splitter affect the data transfer speed?
I am converting digital data into an analog signal through the RS232 PCIE card I added to my PC. I have a desire to collect data from up 8 different RS232 connections and I am looking into using an ...
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Is it possible to use an RS232-USB cable (with an FT232RL chip) for RS485-USB communication?
I have a standard RS232 to USB cable found on Amazon.
It does not work out of the box. This is what I expect since RS232 uses a ground reference and RS485 uses a differential between the two data ...
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What standard defines the number of stop bits in RS-232?
There is an option in many terminal programs or ICs to set 1 stop-bit, 2 stop-bits or 1.5 stop-bits. Is there any standard that says the RS-232 can have only 1/1.5/2 stop-bits but can't have 0.5 or 3 ...
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How is the output of this circuit RS232?
I'm trying to design a multi-channel USB-RS232 adaptor (inspired by this) to go into a larger design. After hunting a little, I found this schematic in the datasheet for FTDI's FT4232, which is the ...
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Transmit error on CAN bus with MCP25625 boards
Setup: CAN bus with 2 nodes each with a microcontroller (CC26X2R1 LaunchXL evaluation board) and CAN controller with an integrated transceiver (MCP25625 click board).
I used the libraries for the ...
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How to use MAX3232 RS232 to UART converter with ESP32
I want to use max3232 IC with ESP32 to connect Topway HMI display. I decided to use ESP32's RX2 and TX2 pins to connect max3232. So I've tried to make this circuit (from here) for my PCB. But ...
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How can I use a serial port to listen to if a toggle is switched?
Using a PC and writing some software I want to detect if a user toggles a small electric switch with as little external hardware as possible. I was thinking that maybe I could use a USB to serial ...
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Transmitting an RS232 Signal over Wireless/RF. Can this be achieved? [closed]
I have an idea I am trying to implement and I want to know if this is possible and feasible.
I have a Barcode Scanner device that gets connected to a PC with a DB9 COM port. Using this connection and ...
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Can you identify this digital signal? It looks like a UART signal and can't figure out the baud rate
I'm trying to read the signal between my quadcopter's camera board that is controlled by an android app, and the rotor control board in the drone.
There are two boards in the drone: the camera board, ...
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MCU to talk to 5 (or more) serials
I have a project where I need to talk to 5 devices over serial (RS232 to be precise).
At 57k Baud. With a polling frequency that is as high as possible.
The first step is probably to convert from ...
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Serial2.write not working on ESP32
well I using topway brand HMI display it is very easy to use with Arduino nano or UNO with rs232 converter. this my converter:
. for example this code is writing "63" number on display. it ...
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Raspberry PI4 and RS232 adapter cable: how to send serial commands
I would like to use a Raspberry Pi4 to control a syringe pump [(see datasheet here and in particular the quick start manual on page1)][1]
The connector cables I used are RJ11 from the Pump to RS232 (...
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Why is my serial connection transmitting slightly incorrect characters?
I have four configurations I'm testing, and one of those configurations is showing symptoms of incorrect transmission in one direction only (from my laptop terminal to the server).
Direct connection ...
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