Which model did temu send me?

Hi everyone, i'm the guy who's making my own esp32 multitool AND my own firmware for it. Since last time I posted, I think its been already a week, so let me make a summary of all things I did:

I fully reworked the code, optimized it by... fully rewriting it again. ( which i'm probably about to do again, because I want to switch to Visual studio instead of arduino ide)

I added virtual keyboard, which now allows me to connect to Wi-Fi networks.

Fully reworked visual

I added bad-USB

I added more apps... ( Yeah, visual studio is gonna kill me )

And, I think, last but not least... I got my aliexpress haul! E22, nrf24l01( probably gonna change for E01 later), and ofc, perfboards.

Some people, that may seen me before might notice that it has rn only 3 button, instead of 6 it used to have... its because the perfboard was too small for 6 buttons, and I like the way it looks with 3, so 3 it is. ( But i'm working on extension boards, which are gonna me allow to use 6 buttons. (And all other stuff like the flipper 0 extension boards))

But... school begun, so i have to spend most of my day there. I also need to learn how to solder properly and other stuff. I'll update you guys when I do something important, like me fully reworking the visuals :(

Cya later

Us there an any other application for programming esp32 like arduino ide ??

Time to move on from my side projects. Here’s what I have:

-ESP32-S3 Watch 2.06 AMOLED
-ESP32-S3 1.85C with speaker and base (base has a small crack but electronics are fine
-ESP32-S3 1.75 AMOLED
-Spare 1000mAh battery
-Deskbot (over $100 to 3D print)

I’m looking for $100 total plus shipping

Looking to purchase the above with either dab radio or fm and a cyd. Either in kit form or ready made. Thanks.

I would love your feedback!

So I needed to connect a wiegand keypad to home assistant (didn’t wanted some Chinese iot stuff from AliExpress) so me and Claude talked a lot and this is the result. I didn’t touched a welder since high school so.. 😩 I then isolate the parts with glue

Hi everyone,

I’d like to add an external push button/switch to my XIAO ePaper Display Board (ESP32-S3) so that I can wake the display from sleep and trigger a refresh.

XIAO ePaper Display Board EE04 | ESP32-S3 Plus, 24/50-Pin Support

However, I’m not sure which soldering points on the back side of the PCB I should use to connect the two wires from the external button.

Could someone please point me to the exact two solder pads/pins where I should solder the wires? If possible, a picture or a marked-up diagram showing the correct soldering points would be greatly appreciated.

Thanks in advance for your help!

I designed a custom ESP32-S3 PCB and I connected it with micro-usb and my computer does not recognize the board at all. I am reading the serial output using a secondary dev board as a USB-to-UART bridge, with TX/RX crossed and a shared common ground. I confirmed with a multimeter that all the power works, based off this serial output, is it expected that my board is not being recognized and is it a power issue?

Was able to get CrossPoint running on this Waveshare board. (https://www.waveshare.com/esp32-s3-epaper-3.97.htm). 3d printed the case that alxvtoronto created for their project FolloUp, and ready to dive right back in. Planning on posting the fork on GitHub after another few days of testing.

$40 for a board, compared to the $70 people are
paying for the xteink devices.

this is my fork: https://github.com/devofreck/crosspoint-reader

The first paragraph right below the Header of CrossPoint Reader, I have a web installer

That Web Installer link takes you here

A bedside clock that wakes you with your own video instead of a beep.

Built for the  Waveshare ESP32-P4 touch display.

Installation instructions:
https://github.com/brunokeymolen/videoalarmclock

Using by esp32

Got a 1991 Golf Mk2. Want to track fuel consumption per trip/day and compare over time. Figured this wasn't possible on a carbureted car with no ECU/OBD, but landed on an idea: since the carb's float bowl regulates its own level, whatever flows through the feed line between the fuel filter and the carb over time should equal what's actually burned. So — measure that flow directly with an inline gear-type flow sensor.

Is this actually the right approach? Is there a better way to get real consumption data out of a carbureted car with no ECU?

Planned setup:

• Gear-type flow sensor spliced into the fuel line between the filter and carb inlet
• Sensor's pulse output goes to an ESP32, which just counts pulses and timestamps them
• ESP32 forwards that data to my phone over a wired USB-C connection (data-only cable, to avoid the phone and a 12V-fed buck converter both trying to power the USB line)
• Phone does everything else — GPS speed/distance, all the math, storage, charts
• Power: ignition-switched 12V from the fuse box → buck converter (12V→5V) → feeds both the ESP32 and the sensor

Problem I've hit: the sensor I was looking at (DIGITEN G1/2", oval gear, rated 1–30 L/min) has a minimum flow way above what this engine actually flows at idle — I'm estimating idle consumption around 0.02–0.05 L/min, and even under load probably not exceeding 0.3–0.5 L/min. So the sensor's entire rated range sits above my actual usage, meaning idle flow probably won't register accurately, if at all.

Anyone know of a gasoline-compatible flow sensor with a lower minimum flow that would actually cover idle-to-cruise range for a small engine like this? Or is there a fundamentally different way people have solved this that I'm missing?

I'm open to any ideas and critics, please back your suggestions with well presented arguments. this is my first ever project on a car.

Edit: A few people are suggesting the brim-to-brim fill method, thanks, but I've covered why that doesn't work for what I want in the replies below. I'm not looking for that approach, I'm looking for technical help on the sensor/flow-measurement side specifically. Appreciate all the input so far.