Near Intersection of I-35 & I-90 Southern Mn. | Not to Hijack your thread, but I've made a few projects using an ESP 32 that have been useful on the farm. I use my phone or tablet to control my 3 button door openers that I have on a shed and and another for my shop. I use an ESP 32 mounted at each location programmed as a soft "Access Point". This means the phone communicates directly with the ESP 32 and the internet is not involved. I need to be reasonably close which is not a problem. The internet could be involved but would require internet access at both the door and the phone. This is not necessary nor even desirable for my purposes.
I also made a "batcher" that uses a flow meter to aid in mixing batches of spray. The batcher has a four digit display and shows the running total of product in a batch. I use this to know when to stop adding water to complete a batch. I do not use it to measure the actual products themselves.
The reason I mentioned ESP 32 is that I've watched a few videos lately describing how the ESP 32 can be put in Deep Sleep for situations such as you describe. I haven't tried using Deep Sleep since I don't have any projects that are battery powered. All my projects have a constant electrical supply available.
Shed box containing ESP 32 and antenna out bottom, Phone screen shots and Batcher below:
Edited by tedbear 12/2/2025 09:17
 (Shed Box 75 (full).jpg)
 (Shop 30 (full).jpg)
 (Shed 30 (full).jpg)
 (80 (full).jpg)
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 Shed Box 75 (full).jpg (99KB - 11 downloads)
Shop 30 (full).jpg (18KB - 27 downloads)
Shed 30 (full).jpg (20KB - 26 downloads)
80 (full).jpg (135KB - 20 downloads)
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Equipment maintenance timer - looking for feedback
