All Questions
44
questions
0
votes
1
answer
540
views
ESP32-S3: Serial stops working after a random period of time
I am using a ESP32-S3 Dev Kit (Arduino code) connected to a MAX3232 to read data from a solar inverter. I am facing a strange problem as follows:
The UART (Serial1, ...
- 101
1
vote
1
answer
238
views
Convert RS232 signal to I2C/CAN/MAVLink signal
I have an airspeed sensor that outputs a RS232 signal: https://www.aeroprobe.com/micro-air-data-system/. I want to connect this sensor to the Pixhawk in order to use the data for my controller ...
- 111
0
votes
1
answer
114
views
How to switch between multiple signals
I have a board that has a MAX232 and a MAX485. I want to switch between these peripherals' RX/TX signals which connected to Arduino. How would I achieve this?
I am definetly not knowledgeable about ...
-1
votes
3
answers
669
views
Which MAX3232 IC's for simple UART to RS232 converter?
I am trying make a TTL to RS232 converter.
I have designed my PCB for 16 pin SMD sop16 and max3232 CSE+. But when I was buying from a store (store link), I saw other types of max3232. I've bought and ...
- 1,139
1
vote
1
answer
210
views
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 (...
- 377
0
votes
1
answer
393
views
Arduino NANO heating issue
I am trying use a HMI display with arduino NANO. I am powering arduino and hmi display ( topway 5 inch smart display ) with 9 volt adaptor. everyting works fine. but if I plugin the Tx, Rx pins which ...
- 1,139
0
votes
2
answers
947
views
How to interface a thermal printer to an Arduino
I've a thermal printer which has TTL, RS232 & a four pin interface. I want to connect it to an Arduino and take printouts with it. It has the following pinouts:
RS232 & TTL
GND
TXD
RXD
DSR
...
- 35
1
vote
3
answers
470
views
USB to Serial (RS-232) cable not displaying data on Arduino serial monitor
My previous post (Pictures from the previous post as well)
So far all of the answers and comments yielded no solution to my problem.
This post offers a different method to communicate serially with ...
- 2,391
0
votes
0
answers
74
views
Slow down rs232, 9600 (locked) to 300 for vintage printer
I have an old GE terminal (late 70s) that I'm trying to use and an old serial printer. The RS-232 port is locked at 9600 baud but my TI Silent 700 (late 70s) is 300 baud max. I've tried to Google ...
0
votes
4
answers
1k
views
Cannot communicate with serial device via an Arduino Nano serial communication
I am trying to communicate with an RFID reader via its serial port. The serial port has an RS232 connector on it. I also want to display the RFID tags ID on a 16x2 LCD screen using an Arduino.
I, ...
- 2,391
0
votes
2
answers
284
views
RS232 RFID reader not working
I have purchased an RFID reader that communicates using an RS-232 cable. I have however used an RS-232 to USB adapter to connect it to my laptop. It is an ACM812A RFID reader.
When I open the RFID ...
- 2,391
0
votes
3
answers
5k
views
Modbus RTU using SoftwareSerial
Im trying to control a temperature controller using Arduino MEGA over SoftwareSerial.
Im using Modbus-Master-Slave-for-Arduino library and I tried to test using example code below.
It gives only <...
- 871
1
vote
1
answer
588
views
Protecting RS-232 from overvoltages
I am using Some arduinos (5V Pro-Mini, but planing to move to actual ATMEGA chip) over a distance of few metres.
These are connected using standard Alarm cable (I had problems with Ethernet cable and ...
- 141
0
votes
2
answers
167
views
Help figuring out the interface on this bill validator?
I would like to interface this bill validator to a microcontroller (Arduino Mega). The website says it supports RS232,RS485,Optoisolated RS232 and USB interface.
The one I have is currently intefaced ...
- 17
-1
votes
2
answers
292
views
Hot switching between RS232 ports
I have a system with two serial devices (Arduino uControllers) connected to a single FTDI (USB-to-Serial) chip through a silicon switch. Each devices works fine on its own.
I would like to be able ...
- 101