Time for another #ROS video! In the 8th episode, I cover parameters and how to use them in nodes. Check it out! 👇👇👇 www.youtube.com/watch?v=-Thr... #robotics #programming @openrobotics.bsky.social

At @hackadayofficial.bsky.social #Supercon this year, I gave a workshop on embedded #Rust. Some loved the language, some didn't, but everyone enjoyed the experience. Check out my latest blog for a full tutorial + code along with my thoughts on #embedded Rust: shawnhymel.com/3042/embedde...

Writing notes by hand has been proven to increase learning and retention over e.g. typing/recording a lecture [Van der Meer & Van der Weel, 2017]. It forces us to slow down and actively engage with the material, as we often need to summarize/paraphrase. #education #tech

New #ROS video 📺 ROS messages require strongly typed, explicit types for the data being passed back and forth. While it comes with some message types out of the box, you can define your own with interfaces. 👇 www.youtube.com/watch?v=INpG... #robotics #programming #embedded @openrobotics.bsky.social

I had an amazing time at #Supercon this past weekend 😍 The workshops and talks were, as always, top-notch, and I certainly enjoyed making new friends and meeting old ones. Keep doing excellent work, @hackaday-feed.bsky.social ❤️

Transport Layer Security (#TLS) is the backbone of secure communication across the internet, and it's crucial for #IoT device development, too. In my latest video and blog post, I break down how TLS works. 👇 shawnhymel.com/3000/what-is... #CyberSecurity #InfoSec #embedded #programming #SSL

Building the crommeter! All 3 worked and performed the blinky test 😁 There are some mistakes on the board that will be fixed for v02. The RP2350 Stamp worked great—thank you, @arturo182.bsky.social ❤️ You can find the code and #PCB files here: github.com/ShawnHymel/c... #maker #RaspberryPiPico

Happy Halloween! 🎃 If anyone is at #Supercon, I’ll be dressed as Captain Hammer. “It's not enough to bash in heads, you've got to bash in minds!”

New issue of #Make Magazine is out! If you’re looking for a primer on #ROS, definitely check it out 🤖 www.makershed.com/products/mak... #maker #robotics #programming

New #ROS video out 📺📺📺 I revisit services (requests and responses) but with C++ this time! Check it out if you're curious about ROS. 👇👇👇 www.youtube.com/watch?v=zuwU... #robotics #programming #embedded #cpp @openrobotics.bsky.social

Running deep learning models on microcontrollers has gained mainstream popularity among silicon vendors and #firmware developers. My latest article examines the state of the #TinyML runtime offerings in 2025. 👇👇👇 shawnhymel.com/2994/deep-le... #microcontroller #embedded #AI #MachineLearning

New toy! I’m interested to see what the dev experience is like. #Arduino

New #ROS video is out today! While topics are great for the pub/sub model, ROS also supports a client/server model with "services." Check out my tutorial creating custom client and server nodes in #Python: www.youtube.com/watch?v=lxg1... #robotics #programming #embedded @openrobotics.bsky.social

New tutorial and video! I show how to build an HTTP client for the #ESP32 using low-level BSD sockets and ESP-IDF: no high-level libraries, just the core concepts so you can see how it all works. 👇👇👇 shawnhymel.com/2983/esp32-h... #IoT #embedded #programming

Time for another #ROS video 📺 I revisit nodes, topics, publishers, and subscribers...but with C++ this time. Check it out! 👇👇👇 www.youtube.com/watch?v=g4iY... #robotics #Cpp #programming @openrobotics.bsky.social

"What skills do I need for edge AI?" is a question I often get. #EdgeAI requires a unique blend of #ML math, #Python for training/optimization, and #embedded or #mobile development. Check out my full blog post to learn more (and recommended courses): 👇 shawnhymel.com/2976/how-to-... #TinyML

Pippin taking a break in the leaves after a rousing round of fetch 🐶

If you are headed to @hackaday-feed.bsky.social #Supercon later this month and you've been curious about #Rust, check out my workshop! There are still seats available. You'll get a #RaspberryPiPico kit to take home and continue your embedded Rust journey 🦀 👇 hackaday.io/superconfere... #embedded

My latest tutorial is out! How to write a custom #WiFi driver from scratch on the #ESP32 using ESP-IDF. It involves a lot of event-driven code! 👇👇👇 shawnhymel.com/2967/esp32-c... #IoT #microcontroller #embedded #programming #firmware

New #ROS video out! In it, I walk through the process of creating custom publisher and subscriber nodes in Python to communicate over topics. Check it out! 👇👇👇 www.youtube.com/watch?v=9_Aa... #robotics #Python #programming @openrobotics.bsky.social

I'm just now learning about @meshtastic.org, an open-source project that uses #LoRa radios to create off-grid text networks. I wrote a blog post about it and ordered a @seeedstudio.com T1000-E to play with at @hackadayofficial.bsky.social #Supercon! shawnhymel.com/2962/what-is... #IoT #embedded

SHOW ME WHAT YOU GOT

Progress! #PCB #KiCad

My latest tutorial is out! How to use I2C on the #ESP32. I show how to talk to a real TMP102 sensor using #ESPIDF (and a virtual TMP105 sensor with #QEMU). 👇👇👇 shawnhymel.com/2954/esp32-h... #IoT #microcontroller #embedded #programming #firmware

It's been YEARS since I've done a board layout. It feels good to use these skills again! 💪 I'm making something fun for @hackaday-feed.bsky.social #Supercon 🤓 And of course, I have to use #KiCad 😁 #PCB #SAO #BadgeLife

New #ROS video out today! I go over the basics of topics and services with the command line in ROS 2. Check it out! 👇👇👇 www.youtube.com/watch?v=HTIc... #robotics #electronics #programming #embedded @openrobotics.bsky.social

Finally figured out how to do bare metal hardware interrupt in embedded #Rust 😅😅😅 I think I’m gonna stick with Embassy… #embedded #microcontroller #rp2350 #RaspberryPiPico

Kconfig is a powerful tool that's been around for a while, and many #embedded frameworks (including ESP-IDF) have adopted it for configuring components. Check out my tutorial and video to see how to use it for your #ESP32 projects! 👇 shawnhymel.com/2935/esp32-h... #IoT #programming

I'm excited to announce my next video series! If you've been following my feed, you probably know that I was playing around with #ROS. Well, here is the first video from all that learning and tinkering: 👇👇👇 www.youtube.com/watch?v=mjrx... #robot #robotics #embedded #programming #RaspberryPi

Choosing between a bare-metal approach and a real-time operating system (#RTOS) can be tricky. An RTOS is great for high complexity and strict timing, while simpler projects may benefit from a bare-metal superloop. 👇 shawnhymel.com/2928/when-to... #embedded #embeddedsystems #Zephyr #IoT

In #ESPIDF, `idf.py build` calls CMake under the hood. Ignoring Kconfig parameters, you can manually build #ESP32 projects with: cmake -DIDF_TARGET=esp32s3 -G "Ninja" -S . -B build/ cmake --build build/ Check out my full post: shawnhymel.com/2920/esp32-h... #IoT #embedded

I think I understand how the #RP2350 memory is mapped. If I missed something, let me know! #RaspberryPi #RaspberryPiPico

I think I've *finally* wrapped my head around the basic ownership and borrowing rules in #Rust. I put together a quick demo here: gist.github.com/ShawnHymel/e.... I know there are some esoteric rules I likely missed, but these should be the major ones. Let me know if I missed something! #programming

Had a blast doing the Georgetown Loop yesterday! Steam locomotives are ❤️ #Colorado

Making progress with embedded #Rust! I’ve got I2C and USB serial working now on my #RaspberryPiPico. The Pico HAL works pretty well, once you get used to it. #embedded #microcontroller #programming #RP2040

Want to move beyond #Arduino on the ESP32? My latest tutorial shows how to set up ESP-IDF with Docker, build a blinky app, and flash it to hardware. Also: emulate it in #QEMU! 👇👇👇 shawnhymel.com/2872/esp32-g... shawnhymel.com/2872/esp32-g... #esp32 #espidf #IoT #microcontroller #embedded

Got blink working on the #RaspberryPi Pico using #Rust! It was more of a pain than I anticipated—not so much from the code itself but rather from lining up the proper crates and memory map 😅 But this should open up the door for me to actually start making demos and projects! #embedded #electronics

I've been working on ByteGrader, an open source #autograder, to complement my recent #IoT with #ESP32 course. It fills a niche that traditional autograders struggle with (e.g. #EmbeddedSystems). Check out my blog post to learn more! 👇 shawnhymel.com/2866/bytegra... #EdTech #STEM #programming

I know I poke fun at the evangelism, but I’m finally taking the plunge to learn #Rust. It’s broken the TIOBE top 20 list (www.tiobe.com/tiobe-index/), and I’m starting to see some adoption in the #microcontroller world. I really like Brown’s interactive version of “The Book” - rust-book.cs.brown.edu

I haven’t been to a #RenFest in over 10 years, and the #Colorado one did not disappoint ❤️

I'm excited to announce my new course! 🚀 "IoT Firmware Development with ESP32 and ESP-IDF" is designed to take you beyond Arduino to building professional #IoT devices with #WiFi, HTTP/HTTPS, MQTT, and SSL/TLS. 👇 learnembedded.dev/courses/iot-... #ESP32 #microcontroller #embedded #programming

I just got back from #OpenSauce2025, and I had a lot of thoughts: mostly excited and some complicated. In general, I think #OpenSauce is bringing back the same Maker Faire energy. You can read them and see my favorite projects here: shawnhymel.com/2847/highlig... #maker #STEM

I don’t smoke, but this was easily one of my favorite projects at #OpenSauce 🔥🔥🔥 #OpenSauce2025 #maker #RaspberryPi @opencv.bsky.social

IP over Tin Can and String 😁 #electronics #OpenSauce #OpenSauce2025

Meeting up with old friends and some of my heroes! #opensauce #opensauce2025 @oddjayy.bsky.social @stephenhawes.com

The flight is delayed, but I’m excited for my first time visiting #opensauce ✈️ #maker

Zephyr provides k_thread_stack_space_get() and sys_heap_runtime_stats_get() for real-time memory monitoring, which can help you detect memory leaks. See my tutorial to see how to use them: shawnhymel.com/2830/monitor... #Zephyr #RTOS #embedded #ESP32

You can run #Zephyr applications on QEMU, which is great for early development, debugging, and #CICD workflows. Check out my tutorial for using Espressif’s QEMU fork for emulating #ESP32 applications made with Zephyr: shawnhymel.com/2807/how-to-... #embedded #programming

I’m working on an open source autograder for my upcoming #ESP32 course. I’m not a backend coder, so I’ve learned a lot (with no small amount of help from AI tools). The plan is to target simulation environments for #embedded systems (e.g. qemu). #programming #IoT #education

I love using AI tools to help me write code, but my biggest issue with them is their absolute confidence in their answers. For example, Claude just told me: The CORS whitelist system is now fully functional! 🎯 I don't believe this for a second. [1/2]