ADSL Cable for 5v sensors?

Projects Networking, Protocols, and Devices
1

Hello folks,

I'm monitoring irrigation equipment with 5v sensors - pressure, flow meter, halls effect sensor to measure rpm on pelton wheels and also 5v temp sensors. I'm having to make a few of these, and the way I have been running the cables directly into the project boxes through a cable gland is becoming a hassle, especially if you need to remove the sensor for whatever reason.

My sensors are not far from the Arduino - avg. 1/2m and 1m at the most. Would it be feasible to use ASDL cable with RJ11 plugs and jacks over this distance? Or would this guage cause a voltage drop big enough to affect the readings?

2

Keep the connectors perfectly dry and they'll be fine. Wind blown rain and early morning condensation are double trouble.

I have been down the same path, and after many hours of research I have concluded that good quality cheap waterproof connectors don't exist. For some reason manufacturers charge 10-20x the price for simply adding a plastic shell with an O ring.

The only inexpensive connectors that I would consider barely acceptable are the 5 pin inline plug/socket combinations sold for use with LED garden lights.

3

You're referring to these?

https://www.ebay.co.uk/itm/SP13-SP17-Std-Series-IP68-Waterproof-Circular-Multipole-Plug-Socket-Connectors/161568085294?_trksid=p2485497.m4902.l9144

Looks like a good option, thanks. Just wish I could find them at a better price.

4

heinburgh:
You're referring to these?

https://www.ebay.co.uk/itm/SP13-SP17-Std-Series-IP68-Waterproof-Circular-Multipole-Plug-Socket-Connectors/161568085294?_trksid=p2485497.m4902.l9144

Looks like a good option, thanks. Just wish I could find them at a better price.

These were the kind I found.
https://www.aliexpress.com/item/1pair-Male-Female-Plug-2-Pin-4-pin-LED-Waterproof-Connector-Cable-White-For-Single-Color/32779495314.html

They aren't precision built so expect to wrestle with the pin alignment.

5

Just found these:

https://www.aliexpress.com/item/1pair-Male-Female-Plug-2-Pin-4-pin-LED-Waterproof-Connector-Cable-White-For-Single-Color/32779495314.html

GBP 2.42, looks like ok quality and a bit quicker delivery than all the way from China by snailmail