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Kind of excited for this because I wanted to get into hydroponics but a huge deterrent was an affordable and accurate PH sensor. Would be cool to see an example of this being pushed to some "IoT platform" like Adafruit IoT.

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I'm working with the creator of [Mycodo](https://kizniche.github.io/Mycodo/) on a PR to get it added there. I don't have much experience with Mycodo, but it seems like a nice consolidated platform for measuring things and sending outputs from a Raspberry Pi server. It's an open-source project mainly run by one guy, who's very attentive to issues and PRs.

This is so awesome! I really love the nonsoldering setup (it's not hard to solder, just annoying in a small apartment with kids). I'm going to see if they're equivalent parts with Qwiic / STEMMA connectors instead of header breakout.

Edit: Did not notice you were OP! Do you have more clarity on the calibration? Is there a buffer solution you can recommend?

Hopefully my reply to xupybd above should share light on calibration. The device doesn't have onboard memory, so you use the software to get calibration data, then save it to either your program file, or save/load to a file, memory, db etc depending on your setup.

I don't have a specific recommendation, but have been using this myself. More expensive than ideal: https://www.amazon.com/Biopharm-Calibration-Solution-Standar.... The packets are cheaper, but require you to have distilled water.

What's so hard about pushing this sensor reading to Adafruit/any other IoT dashboard? You're either sending a mqtt message or POST, regardless of where the sensor reading came from.

I should of clarified, it would of been nice to see an example using an ESP variant (since its cheaper and has wifi) pushing to an IoT dashboard. I haven't looked into the class file and how easy it is to port to micropython/cython.

Haven't tested on ESP, but that would be a great idea, given its ease of use with IoT/connectivity. I've only tested on Arduino, Raspberry Pi, and STM32.

I don't know about micropython, but I've developed a commercial product with the ESP32 IDF. There's a ton of example code for mqtt and REST included in the SDK.

Thank you for sharing about hydroponics. New rabbit hole to be discovered!

I really enjoyed this book as a beginner[1]. I was seriously thinking about getting this [2]. For the price, it seemed very reasonable compared to making my own. I would of gotten it if I live in a more permanent location. I got an Aerogarden to try out but the light is so damn bright. I don't have any place in my apartment that fits it without blinding us throughout the night.

[1] https://www.amazon.com/DIY-Hydroponic-Gardens-Inexpensive-Gr... [2] https://www.lettucegrow.com/

I also considered a Lettuce Grow (beautiful industrial design). Ultimately, I went with a Mr Stacky Smart Farm instead, which is significantly cheaper: https://www.amazon.com/dp/B06VSHBNXS/ref=cm_sw_r_cp_apa_i_bH.... Would recommend it, have had great success so far.

You can already get these sensors and boards for around 20$ all the time.

I wasn't able to find a good one a few weeks ago for any less than around $40 plus the probe, another $20

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