All Questions
13
questions
4
votes
4
answers
2k
views
Could RS-232 data be carried over a standard 3.5mm audio/aux cable?
I am looking at RS-232 control for various TV displays which use a different type of input connector for RS-232. The combination of RS-232 inputs on different TV displays is the standard 9-pin DB9 ...
- 141
0
votes
0
answers
48
views
What to look for when selecting a cable for transmitting multiple types of signals in a moving environment
I'm working on a device that involves transmitting data between a microcontroller and an IMU device housed on a different PCB. The two are connected via a cable using a mini DIN connector. I've ...
- 349
3
votes
0
answers
403
views
Can RS-232 DB-9-compatible cable be used as a physical medium between two CAN bus DB-9 ports?
Note: I am not talking about connecting an RS-232 device to a CAN bus!
I am strictly interested in reusing a RS-232 cable with two DB-9 connectors (one male and one female) to connect two CAN devices, ...
- 145
1
vote
0
answers
1k
views
Why don't LG RS232 commands work when the TV is on (only responds when off)?
I'm writing a new question after stumbling across this question which appeared to have similar symptoms:
LG RS232 Commands partially working.
As the other question noted, the power on command ...
- 49
0
votes
1
answer
359
views
Which cable for 230.4 Kbps RS-232
I have to communicate between a sensor module and micro-controller board. The sensor module uses UART at 230400 bps. I have used a MAX3227 on sensor module as well as micro-controller board. So, the ...
- 96
1
vote
1
answer
78
views
Looking to Identify a connector, to engineer a solution using a USB connector
I have been tasked with installing an NCR 76 (7876) Scanner/Scale in my grandfather's store. The device was purchased over mercadolibre.com and was not sent with documentation, but was supplied with ...
- 11
-1
votes
2
answers
2k
views
3.5mm to DB9 connector (differences) [closed]
I have 2 different type of connectors of 3.5mm to DB9 that I use to send RS232 commands from device to a screen. The 3.5mm is attached to the device on the serial port and the DB9 to a serial cable ...
- 11
1
vote
3
answers
7k
views
LG RS232 Commands partially working
I have a LG TV (32SL8000), which has a RS232 Control Port. I tried to control it with an Arduino and a TTL to Serial Converter (MAX3232). I looked up the commands from the manual.
...
- 31
18
votes
6
answers
71k
views
Max Serial Cable Length?
What is the maximum length of serial cable I can use, to connection work properly? Is length of serial cable in connection with baud rate? I am using about 5 meter cable at speed 38400 bauds and RS232 ...
- 1,039
10
votes
4
answers
23k
views
Why is USB cable maximum length is shorter than in RS232?
Why do we need to buffer USB signal if the cable is longer than 5m?
Is that because a signal voltage drop?
Is that because it drives currents?
- 12.2k
1
vote
1
answer
10k
views
Pin assignment on rj45 when using rs232
I am having a problem creating a cable to connect with two devices. The first devisce is an Intellivue MP70 that I want to connect to the RS232 port using an RJ45 end. On the other side there should ...
- 113
4
votes
2
answers
445
views
Serial comms over 3m cable, shared with USB
I am designing a system that needs to do serial comms over a standard USB cable, as well as normal USB (but not at the same time). In other words, when plugged in to a PC it will appear as a USB ...
- 1,901
2
votes
5
answers
12k
views
Questions about wires in a DB9 cable
I stripped a DB9 extension cable which I will use to connect to a DB9 connector on one end and an RJ45 on another. I need to make connections to pin 2, 3, and 5 on the DB9 side.
When I stripped the ...
- 1,614