this post was submitted on 05 Apr 2025
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ESP32

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Getting Started (self.esp32)
submitted 1 month ago by GreatBlueHeron to c/[email protected]
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I have a project idea and a bit of reading suggests to me that ESP32 might be the best solution. I have never touched ESP32 or anything similar. I have basic electronics understanding and capability - I built a kit Class D stereo amplifier years ago, do my only electrical work on my motorcycles etc. I'm a retired Unix admin. so am confident I can manage the software and programming aspects.

I have strange voltage issues in my home and want to record voltage over time to see if I can correlate anything that might suggest a cause. I need to be able to measure 0 to about 150VAC. Happy to go into the details of my issues if anyone is curious.

My plan is to go to AliExpress and get a 5 pack of "ESP32 Development Board WiFi+Bluetooth" and a 5 pack of "ZMPT101B AC output voltage sensor".

I'm already running Home Assistant and mqtt so am hoping I can use that as my recording and reporting engine.

My questions:

  • is there anything else I'm likely to need?
  • is there any way to find a good, or avoid a bad, vendor on AliExpress for those components? I don't trust the reviews.
  • there are lots of "getting started" tutorials - any recommendations for a good one appropriate for background?
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[โ€“] [email protected] 1 points 1 month ago

Have a look at esphome. Esphome.io I believe. It should be a good starting point.

[โ€“] [email protected] 1 points 1 month ago

Get yourself a good soldering iron and a lot of fine-tips. There are a lot of tiny pins to solder if you add a header.

I have bought from a few sources, including Ali and DFRobot, and never had any quality issues. Adafruit is my other source, thoguh their stock can be very low for a long time.