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Reddit mentions of Waterproof Ultrasonic Module JSN-SR04T Water Proof Integrated Distance Measuring Transducer Sensor for Arduino
Sentiment score: 2
Reddit mentions: 3
We found 3 Reddit mentions of Waterproof Ultrasonic Module JSN-SR04T Water Proof Integrated Distance Measuring Transducer Sensor for Arduino. Here are the top ones.
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With a waterproof sealed emitter. This sensor is suitable for outdoor applications such as car reversing sensors, security alarms, industrial inspection, etcWorking voltage:5V, Static current:5mA, Working current: 40mAWorking range: 25cm-4M, Working frequency: 40KHZ, Detecting angle: 70 degreeApplication: Horizontal distance messurement,Obstacle avoidance, automatic control, Traffic control, Security, industrial controlReference: http://blog.diymalls.com/2018/07/18/jsn-sr04t-waterproof-ultrasonic-module-sensor-diymall/ any question please feel free to contact.
Specs:
| Color | Ultrasonic sensor |
| Size | JSN-SR04T sensor |
I had done something similar. DIY stuff - JSN SR04T waterproof ultrasonic range finder along with a nodeMCU (ESP8266) . The sensor is fixed on top of the barrel and twice a day it measures the distance to the water level. You should Mount it about 20cm above the max. water level because that is the minimum distance it can measure. You will need microcontroller to calculate waterlevel. Here is an arduino tutorial to get you started.
Let me see if I can organize it into something reasonably understandable.
First up, the controller: https://i.redd.it/zmxxkfwqy9g31.jpg
Stuffed in that box are:
For the valves, I'm using a 1" Motorized Ball valve for the outlet (https://www.amazon.com/gp/product/B06X9B4P45) and a 1/2" Motorized Ball valve for the inlet (https://www.amazon.com/gp/product/B06X99PHJJ)
Each of the relay modules control one of the ball valves. The valves are 2 wire, reverse polarity and operate on anywhere from 9 to 24v, so I just use battery voltage. In their normal closed position, both relays on the board are set to ground. When I want to open/close the valve, I switch the appropriate relay on the module to on (+12v).
The ultrasonic sensor is set at the top of the tank and measures the distance to the surface. It's not the cleanest of signals, but it will give a rough idea on where the water level is in relation to the top of the tank. You can then transform that into a rough percentage.
I use ESPHome on the NodeMCU, just for simplicity. The code is pretty long, but not very complicated. Just a bunch of different switches to abstract the base functionality into something cleaner for Home Assistant. I'll clean it up and put it in a github account or something like that and link it here later, likewise with the Home Assistant code that I use to run it.
The ones I use claim a working range up to 4m. I've never tested them to that kind of range before though
https://www.amazon.com/Waterproof-Ultrasonic-JSN-SR04T-Integrated-Transducer/dp/B07FQCNXPP/ref=mp_s_a_1_3?keywords=waterproof+ultrasonic+sensor&qid=1573248470&sprefix=waterproof+ultraso&sr=8-3