ESP32

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?

cross-posted from: https://programming.dev/post/24922639

Any of these low-cost ESP32 development boards (ranging from ~$3 to ~$15) can be turned into a fully functional crypto hardware wallet with colibri.diy - ofc fully free and open source

The project is still in the pre-release stage, but if you like tinkering with Arduino & hardware, check out the github repository for the firmware and build instructions.

Please let me know what you think!

I recently purchased a WiPhone from wiphone.io and was having fun for about a couple of hours until I accidentally hit the reboot function and now suddenly it seems that the screen is no longer working properly. Now all it seems to do when I power it up is displays the WiPhone logo and flickers a bit and the colours are wrong and then it just displays a white screen. If I press any number keys I can see the dial screen flicker for a second and sometimes I can see the home screen and menu screen flicker once in a while as well. I've successfully flashed the firmware numerous times using the Arduino IDE as well as esptool and it seems as though the firmware of the ESP32 seems to be functioning without any issues that I can tell. The Arduino IDE serial monitor doesn't seem to show any problems when I have it connected via USB while booting up the WiPhone. From what I can tell, it looks to be a screen issue. Any suggestions to how I might be able to fix this issue would be much appreciated. If there is any more information that you would like me to post please let me know.

Thanks

cross-posted from: https://feddit.nl/post/26615884

The project is called "Tactility" and its website is https://tactility.one/

You can run ELF binary apps directly from an SD card without restarting or flashing the ROM. There's an SDK for building these apps, but I haven't made an official release yet.

I wrote a blog post with some background information: https://bytewelder.com/posts/2025/01/06/tactility-one-year-later.html

Source code and project files: https://github.com/ByteWelder/Tactility

Cross posted from: https://sh.itjust.works/post/29828353

I'm not worried, that the esp is actively powering the USB oort due to an external power source, because I don't use them. But is there a risk that the esp is sorting the power on the USB because of a mistake on my end by for example shorting 5v and Ground? Can it happen for any other reason? For example faulty parts on the esp?

It hasn't happened yet but I am worried that it might happen in the future.

I am not much of an EE and I was wondering if there is a place where I can find schematics of popular esp32 dev boards? My hope is that I can do placement and wire routing on a known good schematic. I know that PDF version of the schematic is available and technically it is possible to recreate it in KiCad but I'm hoping to find something in native KiCad format so that I have a good starting point for making custom board shapes.

It's a bit sad how deserted this community is, would love to connect more with other makers.

Let's rattle the cage a bit, who of you is here, and what are you working on?

I'll start: A wireless cryptographic keystore & signer. Keys are generated with the hardware RNG and stored AES-encrypted with the user's password, and you can request signatures via BLE.

Howdy, long time lurker!

I was wondering if anyone could give me a hand with trying to pull data from my Harmon Absolute43 pellet stove. Looking at the board, I see an RJ45 connector and thought "seems like a wireshark-like sniffer would do the job".

However, all searches end up looking at networking rather than simple data sniffing. Any ideas as to how to add a "bridge" that also stores the data? From there, I can do the publishing side of things, just the hardware component for me has me scratching my head.

cross-posted from: https://lemmy.ml/post/6755708

A micro Erlang VM for embedded devices like ESP32 and Raspberry Pico

I am looking for a MicroPython Caldav Package to connect my ESP32 to my Caldav server, e.g. Nextcloud. Did that anybody before?

I am looking for an #ESP32 Shield that adds #ZigBee communication to my ESP. Would be great if #MicroPython packages are available. Are there any known projects available, you could reference me?

This is the home of pySmartHome - a MicroPython and ESP32 based private Smart Home under your control.

I use it to read the temperature, humidity and pressure in different rooms.

Watchy is an E-Paper watch with open source hardware and software. It has a barebones design utilizing the PCB as the watch body, allowing it to be worn as-is, or further customized with different 3D printed cases and watch straps. It is a unique timepiece that is also a wearable development platform, allowing users to create their own experience. Watchy and sqfmi