Hi, for some context I have several plants, where I want to read their Soil moisture wirelessly, off a single Arduino IoT board.
The current way I have it set up is wired, An RP2040 powered over USB reading of a wired analog Cap. moisture sensor. Issue is Im limited with range by wire.
The original Idea was making my own Compact Arduino board with an ESP32, with a 3.7V battery, directly connected to the sensor, and send the data to the IoT cloud, but Im unsure with compatibility with Arduino and its cloud or if there are any other ways an Arduino board could read this data instead over WiFi?
Any ideas or suggestions would be appreciated
"several plants" you note.
Does this have anything to do with growing marijuana?
I wish
Is it possible to recreate the Schematics of the Nano ESP32, removing LEDs and USB and most of the inputs/outputs, programming it and powering with a temporary soldered connection?
The ESP32 modules are available.
You can add as much support circuitry as you like.
Hi,
continueing from Wirelessly send 1 Analog value to Controller?
TLDR: I want to design a ESP32 board, with its only fuction being reading an Analog, and sending the value over WiFi to a Hub Arduino board; with a 3.7V Battery with Charging and USB C connection to program and Charge; with nothing more to reduce power consumtion as much as possible, and make it as small as possible.
This is the Circuit I've come up with so far, taking information from several WiFi Arduino boards, Chip Datasheets, and other projects
Now I'm looking for critisim of it or errors I've made, since I dont have much experience of making circuits from scratch, and alot of information clashing with each other
Topics combined so that the context is maintained
Then design away.
How much experience of designing very small surface mout boards do you have ?
However its possible the SEEED XIAO ESP32 modules will do most of what you want out of the box. The ESP32S3 for instance has a deep sleep current in timer wakep of 10uA. Small too.
Have posted my design, but want to make sure everything works, have others take a look.
Got a good 5 years of experience assembling with 0402 and all sorts of PICs and BLE modules. So the assembly process isnt an issue
SEEED XIAO ESP32 just lacks Battery capabilities, the whole idea is to have everything wireless. But I will look into the chip they used
If you want to be sure everyting works, then breadboard it all first.
The XIAO ESP32C3 and ESP32S3 versions have battery charging capability.
Is it possible to programm a ESP32 without USB and UART? as in just directly to the chip using TX and RX and Adapter USB cable?
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