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#esp32c3

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sounddrill :verified_dragon:​

Really enjoyed attending the lioncircuits x pcbcupid hackathon on 26th July 2025(Yesterday/Saturday!)

Didn't get a chance to show the final pic so here's a mockup we made early on to visualize what it will look like!

We made a "Guardian of the Nursery", a tiny "Absurd Buddy"! Basically a fun little stick robot that you put into a plant to measure its water intake. Just the right amount, not too much, not too little, also depends on the temperature and humidity around.

Didn't get a chance to make a companion app but that's okay! Here is our submission: guardian.layogtima.com/

The brains of this project was a PCBCupid Glyph C3, an ESP32 dev board. Check it out if you wish at shop.pcbcupid.com/product/gd00

Update: We won 3rd prize!

#hackathon#pcbcupid#lioncircuits
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Elena ``of Valhalla''
The Bag of Random Sensors that had the DHT22 also gifted me with 3 (THREE!) BMP280 (temperature and atmospheric pressure, I2C or SPI).

While playing with them I've learned:

* The #esp32c3 can use #i2c on any pin; the default I believe is 8 and 9, but they are also used while programming, so meh
* You can change the i2c pins in #arduino by calling Wire.setPins(I2C_SDA, I2C_SCL); before any Wire.begin();
* There is an example sketch called Wire -> WireScan which scans for i2c devices (you will have to change it to use the pins you want to use with a call to Wire.setPins) which is a godsend.
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