r/esp8266

Tired of explaining esptool commands to my factory workers every time we needed to flash devices, so I built a desktop app that handles everything automatically.

What it does:

- Auto-detects Python and esptool on startup — installs esptool via pip if missing

- Auto-detects ESP32 devices by USB vendor ID (CP2102, CH340, FTDI, native USB)

- One-click flash with progress bar and live esptool output

- Factory mode — plug in a device, it flashes automatically, unplug, plug next one, repeat indefinitely

- Works on Mac and Windows

- Dark theme

Built with: Java 17 + JavaFX + jSerialComm

I'm building IoT energy monitoring devices (ESP32-C6 based) and needed something my factory floor team could use without any technical knowledge. Figured others might find it useful too.

Open source, MIT license: https://github.com/AjinkyaGokhale/esp-flasher-java

Feedback welcome — especially if you test it and find any bugs!

Hey guys!. I made a ESP32 Deep-Sleep Battery Life calculator for you guys. and its free to use for anyone.
https://toolsamurai.com/docs/tools/iot-arduino/esp32-deep-sleep-battery

okay so this started as a stupid weekend project and now i cant stop thinking about where it can go

here’s what i built
my laptop runs face_recognition, pulls face mesh landmarks, figures out if you’re happy or not, and sends that over HTTP to my ESP8266 bot. the bot gets the emotion, shows a reaction on the OLED, and logs it. that’s it. simple.

but the architecture is the interesting part.

ESP8266 does nothing heavy. it just receives, reacts, logs. cheap as chips. the laptop (or any server) does all the thinking — detection, mesh, classification. thin client model basically. which means you could deploy 50 of these nodes for almost nothing, all talking to one central machine.

so then i thought

what if you put these in a cinema?

nodes on every row. audience faces tracked during the film. emotion data collected per scene, timestamped. at the end you don’t ask people what they thought. you already know. you have the data from their actual face.
honest review generated by facial reactions. not by critics, not by surveys, not by paid promotions.
this is very early stage. the bot works, the loop works, but scaling this is a different problem.
need your brains on this
• how would you handle the compute side at scale — local server or cloud?
• better real-time emotion classifiers?
• privacy — how do you ethically collect face data in a public space?
• anyone done something similar?
drop ideas below 👇

A while back I started developing my own weather station from scratch using Arduino as my microcontroller and then eventually switching to ESP8266. I work in the paragliding industry and I am a pilot myself. I can imagine those in this industry would understand just how important weather stations are to us, and reliable ones too. We use them everyday to look ahead of the wind direction to see what is on it’s way. We see it’s a gusty SE day so we look further up at SE weather stations to know what wind strengths to expect and how soon. If one of these stations are offline it makes it really difficult for us to make a safe call, especially commercially. This is why I intend on building for my community my own weather stations so that I can both earn a bit more income and dive deeper into my interest in electronics as well as weather forecasts and predictions.

In the pictures attached you guys will see what is my basic prototype of a weather station for at home. It currently only includes temperature and humidity sensors as I haven’t yet gotten to build additional sensors and I wouldn’t like to jump the gun if the concept won’t work.

I realized in my previous version that the radiation shield I had used was practically useless in terms of reliable readings as it traps heat and that’s a big no no. I then came up with the idea of making my own shield with parts bought from the hardware store. I decided on using 5 110mm PVC endcaps along with threaded rods, nuts and washers to create an even spacing between each layer. I went with a spacing of 20mm, but before adding the sensors I thought to halt as I’m doubting if this would work. To me I fear that rain will enter and potentially if not definitely destroy my sensors. I am trying to stay optimistic, but I am also very realistic and sometimes too cautious.

Let me know what you guys think of this DIY Radiation Shield and if and how I could improve it. Preferably not by 3D printing because otherwise that would’ve been my first option.

List of components I’m using

•Nodemcu v2 12F
•Two Led’s For Status Indication And Fault Detection
•Two DHT11 Temp & Humidity Sensors(Cheap, but only for testing purposes)
•LM2596 Buck Converter
•Cheap Solar Charge Controller
•12v 7Ah battery
•Two 9v 5w Solar Panels In Series

I’m using Blynk services to display data on my phone remotely. This is crucial as it doesn’t require me to enable port forwarding on my router which requires additional fees through my ISP subscription.

I am going to convert this simple wired rc excavator to mobile controlled excavator through esp8266.Any suggestions for this build to make it even more better ?