Questions tagged [long-distance]
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13
questions
0
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0answers
33 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
53 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
26 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
2k 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 ...
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1answer
61 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
39 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
36 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
51 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 ...
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1answer
70 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
45 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 ...
0
votes
0answers
42 views
PWM drive of LED strip through long wire
I plan to drive a 12V/1-2A single color LED strip. The driver system will have MCU/MOSFETs like this https://www.makeuseof.com/tag/connect-led-light-strips-arduino/.
The question is what MOSFET and ...
0
votes
0answers
43 views
Powering long-distance sensor bus
I need some help with my project.
I'm building an outdoor sensor network with a bus topology. Every sensor node is a 3.3V system which contains an MCU + the sensors + transceiver. For communication, ...
3
votes
4answers
362 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 ...
