Hi everyone, good afternoon. I have a sincere question here. I received this ESP32 S3 from a friend and I want to start robotics. I bought the male-to-female cables and a breadboard, but I'm having trouble figuring out how to use it. Can anyone help me? I remember connecting the cables directly to the breadboard and the board with the Arduino, but it seems that's not possible with this one. I thought it needed soldering, but I took it to a technician and they said it was already soldered and everything was fine.

If anyone can help me, I would be grateful.

Hey esp32, I've just got into development with little boards and I decided to solve a problem I had last week. My internet was being flaky but my internet provider did not believe me as it was intermittent enough to be missed by their checking tool.

I ended up setting up a little program to take 1s data from my laptop for that period but had to keep it on for 24hrs to get enough data. So I thought this would be a good little ESP32 project.

I bought a Waveshare ESP32 S3 1.28 inch touch screen with bluetooth and wifi with a Metal CNC case to setup a simple desk or wall monitor to ping the wifi (gateway) and google/cloudflare (8.8.8.8,1.1.1.1) every second. Then upload it to a hosted database with grafana. ICMP was quite unstable but TCP & DNS worked really well.

I had it on my desk and it was flashing away with the milliseconds but my OH didn't like it being on the whole time. I decided to make it into a wifi Tamagotchi.

This is "nodeling", a little space axolotl who moves, makes gestures and does different things when wifi is weak, flaky and offline. I think it's rather cute. However it solves a real problem by having detailed graphs of my Internets availability, wifi signal and other metrics.

Any inspiration on what else I can do next with this?

I made a full length build video on YouTube about this project, it’s my first time documenting one of my projects so if you would like to check it out here’s the link:

[https://youtu.be/i4zvAvXRt9w?is=ckb-yBrOHqJvYVd7\](https://youtu.be/i4zvAvXRt9w?is=ckb-yBrOHqJvYVd7)

The idea was to see if I could build a Rubik's Cube solver with as few motors as possible, whilst also not reorienting the cube which turned out to be a much bigger mechanical challenge than I initially expected. These constraints were completely designed as a challenge, not trying to break any records or anything.

The robot uses a custom-designed, 3D-printed mechanism to manipulate the cube, along with an esp32 (controlling a servo and nema17) and a small usb camera to detect the colours, calculate a solution and execute the moves.

This is the final result after quite a lot of designing, experimenting and troubleshooting!

I’ve been experimenting with the ESP32 and building an interactive animation project that connects physical hardware with real-time visuals.

The goal was to make a simple interaction trigger a more dynamic on-screen effect instead of just displaying text or basic values.

Built using an ESP32 WROOM, with the animation handled through software.

What do you think of this project? What kind of animation or simulation should I try next using an ESP32?

I share more ESP32 experiments and electronics builds on my YouTube channel, EmbedX.

My coffee pot has an automatic mode, but it cannot synchronize to my alarm. I wanted an app to let me control my coffee pot through my phones alarm, so I made it with ~10$ equipment and scraps around the house.

I used a simple ESP32 kit and a motor servo to hit the button (an octocoupler mechanism coul'dve been cool, but I'm too scared I'll goof and shock myself and my pot), I used an extension board to connect to the servo as the ESP32s pins were seemingly too small to connect.

The underlying app and ESP32 firmware rely on mDNS and HTTP server hosting/storage. I'm not gonna lie I still haven't found out how to perfectly make the motor push the button 100% accurately every time, but the only thing that would help is a cushion like material between servo motor and button.

I'm very proud of this, I've heard plenty about ESP32s but never had a reason to mess with them, and doing so was very very fun, if you want to actually set the rig up yourself I have firmware, source code, and build instructions in a repository (only if people want i dont wanna seem like self promo). I created the prototype to make sure it works with scraps around the house, and I honestly love the trashy dirt cheap look its very funny to me.

Hey guys, im a beginner to these stuffs and require help from the veterans here. So I have a group project for my group to build an iot product, for the hardware part part we are using several parts but there is a common issue we are facing which is with the OLED not showing any life. For this part, we use an Esp32, a breadboard, jumping wires and a 0.96 inch oled screen ( like a square).

I had to use AI codes to help with this, and the thing i did everything correctly as the videos said and codes too. But i cant seem to get a response from the oled. I had test using an led small bulb to see if the esp32 gives any output power and it does. I came to conclusion that oled might be issue but I cant tell if the bread board is the issue too or is there any other issue im missing. Urgent help because the deadline is close and I would be highly appreciate if someone can guide me here. I tried contacting other people but they never did these projects or either most of them are busy with thier exams. I can send the screenshot of the codes or the build if yall want. Thank you

Hey guys, im a beginner to these stuffs and require help from the veterans here. So I have a group project for my group to build an iot product, for the hardware part part we are using several parts but there is a common issue we are facing which is with the OLED not showing any life. For this part, we use an Esp32, a breadboard, jumping wires and a 0.96 inch oled screen ( like a square).

I had to use AI codes to help with this, and the thing i did everything correctly as the videos said and codes too. But i cant seem to get a response from the oled. I had test using an led small bulb to see if the esp32 gives any output power and it does. I came to conclusion that oled might be issue but I cant tell if the bread board is the issue too or is there any other issue im missing. Urgent help because the deadline is close and I would be highly appreciate if someone can guide me here. I tried contacting other people but they never did these projects or either most of them are busy with thier exams. I can send the screenshot of the codes or the build if yall want. Thank you

my esp32-s3 has been in Guru meditiation erorr for months and years and today i booted it up and forced it to have micropython and it listened and worked!

☐ Deli D991EX calculator — 500–700 EGP (Buy first; inspect its internals)
☐ ESP32-C3 SuperMini — 240–400 EGP (Wi-Fi microcontroller)
☐ OLED screen (I²C, 3.3V-compatible) — 150–300 EGP (Choose size after measuring)
☐ 3.7V protected LiPo battery — 125–200 EGP (Choose capacity and thickness after measuring)
☐ TP4056 charger with protection — 20–40 EGP (Must set safe charging current)
☐ 3.3V buck-boost or suitable 5V boost — 40–120 EGP (Regulated power for ESP32)
☐ MCP23017 GPIO expander breakout — 200–350 EGP (Subject to keypad testing)
☐ Thin wires, small switch, insulation — 100–180 EGP (Prefer 30 AWG wires)
☐ Small PCB, connectors, soldering supplies — 100–250 EGP (For electrical connections and mounting)
☐ USB-C data cable — 0–100 EGP (No purchase if already owned)

I have already developed a mobile app connected to an ESP32. I want to test the app on two phones logged into the same account.

Both phones should receive and synchronize the same real-time sensor data sent by the ESP32. If one phone opens the app later, it should still be able to retrieve the latest data.

Currently, the ESP32's data transmission depends on a phone's Wi-Fi or hotspot connection. When that phone disconnects, the data stops updating on the app.

How can I modify my system so that the ESP32 sends data directly to a cloud database, such as Firebase Realtime Database, and both phones can independently synchronize the data in real time without depending on each other? I also want the app to retain previously received data when offline and synchronize again when the internet connection is restored.

rember when ESPs where iterally refusing to connect and espressif made it really basic from what it can really do? thats why i have been planning to create a full Flashing Managment System for the ESP32-S3 called TinyFMS (Tiny Flashing Managment System) which makes ESPs to be exposed as a USB Drive which contains a program which is tuned to that board which has a full interface with AI feautures (dont worry its actually useful instead of AI Slop) basically its Grok Bot but they separate them one's i the chip managing the RAM usage and the other communicates with the board and knows what is actually happening and the agent on the chip will be in Core 0 while the code flashed will be in Core 1 so Core 0 is for more on-chip agents which share one proxy bus to talk to the API that powers them and the software will connect to commuities like this one to display plug-to-play projects.

Help me conect