Questions tagged [long-distance]
The long-distance tag has no usage guidance.
19
questions
1
vote
2answers
244 views
Is it necessary to use a pull down resistor with this BTS7960?
I have an Arduino Nano controlling a BTS7960 that is 10 meters away.
I have one 24V power supply.
Both the Arduino and the BTS7960 get 5V through a an LM2596 step down converter.
The BTS7960 "...
0
votes
2answers
93 views
I2C over long distance with RJ11 CAT3 cable: how EMI noise will effect differential (but not twisted) pair wires
I have several nodes with Cat3 RJ11 cable in my office. I need to do an I2C communication between several nodes over + 20m and read about the PCA9615 driver. Unfortunately, the Cat3 RJ11 cable has ...
0
votes
1answer
213 views
Does the ESP32's Long Range capability work with most smartphones?
Recently discovered an ESP32 can be its own access point (controlling or displaying data wirelessly through a web browser not connected to Internet). It also has long-range capability:
Long Range (LR)
...
0
votes
2answers
65 views
Transmit digital signals over long distances using current (voltage to current converters)? [closed]
I want to transmit signals over a long distance wire.
Let's imagine that I want to transmit the temperature information from the LM35 sensor over a long wire: instead of transmitting the voltage (...
0
votes
2answers
157 views
Star configuration using CAN Bus, I2C or RS485
I need to create a sensor network, with a central node receiving data from +10 different nodes, each one +20meters from the central node. So basically I need to create a star configuration, with a ...
1
vote
0answers
156 views
Very long distance analog audio transmission over cable
Summary: I want to transmit an audio signal (300Hz-3kHz) without modulation over a 10 km cable.
I don't know how to.
I have looked for a similar post and couldn't find any I hope I am not creating a ...
0
votes
2answers
75 views
Communication within 5-10 meters: RS-485 or Wireless?
As a follow-up for my previous question, can anyone please recommend for my application (communication between two floors of a building) as whether to use RS-485 or any wireless technique (I am ...
5
votes
2answers
214 views
Transmitting VCC and GND signals for use with RS-485
The specific question I want to ask is whether I can transmit VCC(5VDC) and GND power signals for powering the destination circuit (in an RS-485 arrangement) or not.
The power lines will be grouped ...
0
votes
0answers
79 views
TCA9517DR on I2C for long distance wiring with high capacitance bus
I have a CAT6 cable that was used for old temperature sensors that works with 5V I2C at 25/30 meters from the main MCU with cable pairs that brings VCC-GND-SCL-SDA.
Here is the schematic:
I've tried ...
0
votes
1answer
58 views
Waterproofing a cat5e/6 repair
I have a 1200 foot long outdoor direct burial network cable running through an outdoor environment that ranges from dry to 6+ ft underwater depending on the year and season. (Currently it is a foot or ...
1
vote
0answers
30 views
Send a 60Hz trig signal over a 9m cable
I want to send a trig signal over a 9m cable, the signal is around 60Hz (each 15ms it sends a 1ms pulse). In order to avoid electrical interference I convert the 3.3V original signal with the ...
4
votes
6answers
3k views
Understanding voltage drop
Meanwhile in quarantine I been trying to learn about electronics. I am still not able to understand the voltage drop when it comes to long wires. My goal is to be able to send a 5v signal over a very ...
0
votes
1answer
96 views
Interface 24V signal from one device to 3.3V signal on another device
I have a device A that sends a signal through an optocoupler, this signal travels through a 7m cable and is used by another device B that has a SN74LVC1G17SingleSchmitt-TriggerBuffer powered by 3.3V, ...
0
votes
1answer
57 views
Is it possible to use i2c accelerator to multiplexer input?
I have 10ft long wire cabled i2c 4 buses (for 8 sensors, sensor are not in the same place each has 2 i2c addresses),
I try to use i2c multiplexer PCA9548A with an i2c accelerator Ltc4311,
i2c ...
1
vote
0answers
37 views
Noise suppress recommendation and best practices
I've developed for my home automation project this schematic: it's quite simple, an ESP32 GPIO enable pin drives those mosfets that gives power to the LED and enable the PCA9306 EN pin, for more ...
0
votes
1answer
85 views
Long Range Bus for Raspberry Pi
I wish to measure the rotational speed and electrical current used of/by industrial components. Those components are driven by strong electric motors. The solution should be cheap and fast to ...
0
votes
1answer
72 views
Sensor 30 meters away
for my home automation project i'm using 10 Sensirion SHT21 Temperature and Humidity devices, those devices are distant 30/50 meters away from my ESP32.
Those devices are driven using 5V and at both ...
0
votes
1answer
50 views
Can the button still work if being far away from Pull-Up Resistor?
Here is the illustration for pull-up resistor, I am wondering if the button still can drain the input voltage to GND when the wire between button to MCU is very long which increases the impedence of ...
3
votes
4answers
592 views
multiple Open Drain UART over long distance [duplicate]
I have 9 microcontrollers ATMEGA3208 and I have connected the RX and TX lines of 8 of them in parallel. My configuration is in master-slave. The master microcontroller send data to one of the 8 RX ...
