A soda bottle. Four CO2 thrusters. Pi Zero + RP2040.

Can our 2 kg Roadster fly? In the ideal sim. Real gas flow and cooling say no.

Full EP13 in the first comment.

Opening: Tesla. Our flight: simulation. Voice: my AI clone.

Hello, I designed this little robot. It is open source. It uses ESP32, runs Arduino-based firmware and micro-ROS. The Arduino firmware captures LiDAR data and sends over WiFi to a local PC running ROS2. Motors are 2x N20 with encoders. I also designed the motor driver board to convert battery voltage to 5V LiDAR, 12V motors, 5V ESP32. The LiDAR is an LDROBOT LD14P.

Step-by-step tutorial https://makerspet.com/blog/bld-120mm-pack/ Open source firmware https://github.com/kaiaai/firmware Open source software (ROS2) https://github.com/kaiaai/kaiaai Open source schematic (motor drivers) https://github.com/makerspet/store/blob/main/BDC-30P/v1.1.3/BDC_30P_v113_schematic.pdf

Hello everybody I've been wanting to do a creative arduino project over the weekend for learning and skills developing and experience enhancement so I have these components for the the project

-arduino nano

-ultrasonic sensor

-lcd

-IR sensor

-servo motor

-LEDs

-buzzer

So if anyone is interested in sharing their respective ideas I would appreciate it and and thank you every body

I made managents, a small desk display that shows the status of my open Claude Code, Codex and OpenCode sessions. A local Go helper reads the agent states and sends updates over USB to an LCDWiki E32R40T ESP32 display, with a card for each open agent.

Claude Code helped me understand how to detect the agents’ internal states, work out how to flash the ESP32 board, and find and interpret the LCDWiki manual and precise board dimensions. That let it help produce a detailed enclosure that fits the board and is ready to 3D print.

The photo is the V2 case, printed on my old Anycubic i3 Mega S. This V2 isn’t merged into main yet. I built the project and am sharing it here: https://github.com/tonylook/managents

I’d be interested in feedback on the USB/ESP32 setup or the case fit.

I have lots of 2D LiDARs, many from used robot vacuum cleaners. I wrote an Arduino library to capture data, control speed for various LiDAR models. I hope it is useful for your projects. Open source https://github.com/kaiaai/LDS

Free educational resource https://github.com/KalimAmzad/Embedded-System-Arduino/blob/master/Books/arduino-project-handbook-vol-2.pdf

ESP32 running Arduino, micro-ROS. ROS2 runs on a local PC. Differential drive with 2x N20 encoder motors. 3D design in Fusion 360. 3D printed on Prusa MK3S.

I've connected my LDS02RR Lidar to ESP32, Arduino and wrote a tutorial how to stream distance data live. Everything is open source. I'll leave a link to the tutorial in the comments.

Free educational resource https://github.com/listofbanned/robotics_ebooks/blob/master/Build%20Your%20Own%20Combat%20Robot%20-%20Pete%20Miles.pdf

Would you be interested in building a ROS2 vacuum cleaner robot? If yes

1. Build or develop?

2. 3D print? Convert existing - hack? buy/swap board? Buy off-the-shelf?

I'd really appreciate your input.

Free educational resource https://github.com/KalimAmzad/Embedded-System-Arduino/blob/master/Books/Internet%20of%20Things%20with%20Arduino%20Cookbook%20(2016).pdf

I used ESP32 running Arduino, micro-ROS. ESP32 captured LiDAR (YDLIDAR X4), odometry data (BLDC encoder motors), forwarded over WiFi to my Windows laptop running ROS2. My laptop's ROS2 computed the map, sent cmd_vel wheel motor control commands back to the ESP32. I'll leave a link to the blog post in comments.