Top of the morning to you. I am planning to work on a project to monitor the level on my basement sump. Recently while I was in my basement I did a random check on my sump pump operation by bypassing level switch and the pump didnt come on. so I opened the lid on the tank to find the level on my sump about 1/2 inch from flooding. I replaced the sump pump with new one and level is back to normal. Hence the need for this project.
I ordered a few of these car backup parking sensor from ebay since they are waterproof (https://www.ebay.com/itm/22-5mm-Black-New-Parking-Sensor-Car-Reverse-Back-Up-Ultrasonic-Radar-DPL5-Top/222768942440?hash=item33de104d68:g:RRcAAOSwpdpVelBL) since HC-sr04 module are not waterproof. However after receiving them I realized they only have two pin versus the four pin on hc-sr04. Therefore I need some help to first read the data over serial monitor by hooking up the ebay waterpoof sensor to wemos d1 mini.
Once I am able to read them then I can starting coding in Blynk and update you on my progress.