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Questions tagged [long-distance]

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2 votes
2 answers
155 views

How far can an AC signal actually go?

I have the following circuit schematic: simulate this circuit – Schematic created using CircuitLab The systems is a water level control circuit, in which a signal is sent from the water level ...
Je parle avec toi's user avatar
2 votes
1 answer
64 views

Determining load voltage and current of a pump connected to long wires

I'm trying to estimate the load voltage and current of a pump connected to a power supply with long wires. Here is a schematic: simulate this circuit – Schematic created using CircuitLab The ...
Raphaël's user avatar
0 votes
1 answer
123 views

Yagi antenna with 16 dBi gain, is it bottle necked by the power input?

I want to expand my PC's WiFi range, but the NIC delivers only 5 W. When I connect the antenna, not much more range is achieved. Is the antenna not the right one, or is the output of 5 W not enough? ...
Raygo's user avatar
  • 1
1 vote
2 answers
310 views

Need advice on achieving 1 km non-line-of-sight wireless communication without internet

I'm currently working on a project that involves establishing a reliable non-line-of-sight wireless communication link with a range of 1 kilometer or more. The project does not have internet access, ...
Lakshmi Vara Prasad Guduru's user avatar
0 votes
2 answers
59 views

Buck Reg Isolation Through I2C Pullups

I have two microcontrollers on an I2C bus. They're powered by separate buck regulators. This question recommends buck regulator outputs never be put in parallel. What about through I2C pullups? If not,...
Schuyler Horky's user avatar
24 votes
9 answers
4k views

Single wire (no ground wire) long distance low frequency communication

In a cave we are currently exploring, there is a temporary siphon that sometimes blocks our way. I was thinking about monitoring it (pressure sensor or other level sensor at the siphon, transmitter ...
Sandro's user avatar
  • 7,697
5 votes
8 answers
3k views

Long-distance Arduino buttons crosstalk over Cat5e cable

I am developing a hardware system where an Arduino sits in the server room and communicates with the main computer via USB/serial. Users can push buttons at remote panels to trigger different ...
TecumTechCEO's user avatar
2 votes
2 answers
535 views

level-shifting daisy-chained data line from 5V to 24V for long distance communication stability

I need to daisy chain several WS2811 chips with distances up to 20-30m in between. Every unit has a WS2811 chip that drives 3 DIO5151BCD10 LED drivers to control a high power RGB led. To account for ...
WhiteSpin's user avatar
  • 179
0 votes
1 answer
90 views

Best fit wireless technology for long range application

My project goal is to have 2 devices, a transmitter and a receiver. The transmitter should transmitter a measured distance +- every second and the receiver which could be at max. 10 miles away from ...
Sven Onderbeke's user avatar
1 vote
2 answers
3k 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 "...
Snaier's user avatar
  • 11
0 votes
2 answers
588 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 ...
BossGandalf's user avatar
0 votes
1 answer
2k 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) ...
adamaero's user avatar
  • 677
0 votes
2 answers
685 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 (...
BossGandalf's user avatar
0 votes
2 answers
1k 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 ...
BossGandalf's user avatar
1 vote
0 answers
322 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 ...
user769708's user avatar
0 votes
2 answers
312 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 ...
Maneesh Verma's user avatar
6 votes
2 answers
1k 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 ...
Maneesh Verma's user avatar
0 votes
0 answers
135 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 ...
VirtApp's user avatar
  • 579
0 votes
1 answer
73 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 ...
antgiant's user avatar
  • 103
1 vote
0 answers
40 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 ...
Pedro NF's user avatar
  • 265
6 votes
6 answers
4k 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 ...
Tono Nam's user avatar
  • 557
0 votes
1 answer
513 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, ...
Pedro NF's user avatar
  • 265
0 votes
1 answer
119 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 ...
oppo's user avatar
  • 547
1 vote
0 answers
59 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 ...
VirtApp's user avatar
  • 579
0 votes
1 answer
168 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 ...
FalcoGer's user avatar
  • 103
0 votes
1 answer
90 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 ...
VirtApp's user avatar
  • 579
0 votes
1 answer
68 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 ...
Jeffson's user avatar
3 votes
4 answers
1k 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 ...
MrBit's user avatar
  • 2,053