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ESP32 Development Board
Wifi/Bluetooth. USB C model
Free shipping if you spend more than $15 (so can have 3 shipped for ~$16.20) max 1 unit per customer
I just ordered with some CT clamps for home power monitoring :-)
ESP32 (ESP32-WROOM-32S) US$3.57 (~A$5.40) + Shipping ($0 with A$15 Order) @ Digital Tech Mart Store AliExpress
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Pingu on 21/06/2024 - 09:36 aliexpress.com (448 clicks)
Last edited 21/06/2024 - 13:08 by 2 other users
Last edited 21/06/2024 - 13:08 by 2 other users
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I suspect OP has no idea, try https://docs.openenergymonitor.org/electricity-monitoring/ct…
Using an ESP8266 or ESP32 instead of an arduino will provide wireless access.
I’ll be measuring all the different circuit in my house to measure usage.
I’ll be making my own design (but borrowing heavily from multiple open source projects) but here is an example of a very simple one:
https://simplyexplained.com/blog/Home-Energy-Monitor-ESP32-C…
ooh can you share the CT clamps & project?
I've got some on the way already for WLED projects but will have to order some more
Not exactly what I’m doing but this (you can buy their hardware but they open source all their stuff) is the same idea:
http://lechacal.com/wiki/index.php/Raspberrypi_Current_and_T…
I love these little boards.
Currently using them as bluetooth proxy on Home Assistant, to track the Xiaomi Thermometers
nice! i didnt think of using this as a btut proxy, thanks for that info! i have the same thermometers and converted them to zigbee to get rid of my xiaomi gateway
https://smarthomescene.com/guides/convert-xiaomi-lywsd03mmc-…I set this up years ago in my old house, i remember the square Xiaomi temp readers being a pain and ended up going with the circle ones everywhere, Are these the best choice now? Tempted to get back into Hass…
Ive got 12 that have been running great. The big difference for me was moving from the ESPhome monitoring, to using BLE Proxy, but I do also recommend the Telink flasher for them:
What exactly is such a device for, automated home defense turrets I assume?
They're microcontrollers, so you can code them to do pretty much whatever you like (within its tiny cpu ability) kind of like an Arduino, and it's got wifi/bt built in. Personally I use a bunch of them with "WLED" software to control WS2812B LED strips around the house.
Don't forget GST is added at check-out.
Still a nice price though, ordered some for a future project.
+GST, and isn't that normal price these days?
I just ordered with some CT clamps for home power monitoring :-)
Don't forget to order an external ADC like ADS1115, as the esp32 ones are not very accurate.
Is that version with the shielded daughterboard (what is the word?) better than the ones with the bare chip?Any cheap add-on kits to turn it into a presence sensor or PIR? Sick of my ZigBee PIR sensors getting stuck
The LD2410C is a pretty commonly used mmWave presence sensor.
Can also pair it with a cheap PIR sensor like an AM312.
You won't get them to run on batteries for any length of time though, the draw is just too high.
esp32 is not suited for battery power, so you might as well try radar instead of PIR.
Should I order anything with them?
USB cables are handy and cheap to add in
Note that many applications can also be implemented using the smaller and cheaper ($3.23) ESP32-C3 boards:
yeah good enough. just need to watch for wifi range.
Just solder a piece of copper wire. Problem solved:
https://community.home-assistant.io/t/esp32-c3-super-mini-wi…
PS: I don't think this would really work, but I'll try it next time I buy a C3.
noob question: are these good for making drone planes?
OP - reminder - be mindful that open ended CT could be dangerous.
https://www.smart-energy.com/industry-sectors/components/the…Know what you are doing. This is NOT a case of harmless failure.
The example is 100A.
We would be dealing with a magnitude less at 10A.I'd imagine the small ESP32 from 5V DC wouldn't catastrophically fail but would blow a trace/IC.
I'm no electronics engineer but the numbers don't seem appropriate for household use.Happy to be corrected if there really is a risk here.
im curious on what are you going to monitor, how and to do what :)