A few years ago, I started wondering if there is a way to program an AVR microcontroller without the Arduino IDE which is slow on older computers that I have. This was the starting point for the projects ucmf and yauclib:

While ucmf is a framework for compiling microcontroller projects similar to CMake, yauclib is for hardware abstraction similar to the Arduino software library. Both are in development and only support a few AVR microcontrollers so far (and Arduinos based on them).

I consider ucmf to be ready to use. yauclib still needs a lot of work, especially drivers and hardware-independent interrupt handling mechanisms.

The code for both projects is on Codeberg:

https://codeberg.org/ncc1988/ucmf

https://codeberg.org/ncc1988/yauclib

"The tiny new MSPM0C1104 [$.20 #microcontroller] measures just 1.38 mm², which TI says is about the same size as a black pepper flake" http://search.app/4rnny

Getting #WiFi to work in #Zephyr can be a bit tricky...so, I'm here to help! In my latest video, I show how to configure a WiFi driver for the #ESP32 and make simple HTTP requests. Check it out!

https://www.youtube.com/watch?v=0ONIU4JRnHE

#IoT #microcontroller #embedded @zephyr

Exploring the RP2350’s UART-Bootloader https://hackaday.com/2025/05/11/exploring-the-rp2350s-uart-bootloader/ #Microcontrollers #microcontroller #UARTbootloader #rp2350 #uart

Exploring the RP2350’s UART-Bootloader - The RP2350 has a few advantages over its predecessor, one of which is the ability ... - https://hackaday.com/2025/05/11/exploring-the-rp2350s-uart-bootloader/ #microcontrollers #microcontroller #uartbootloader #rp2350 #uart

From this week's Linux Update newsletter: @BruceByfield shows you how to get started with the Arduino IDE
https://www.linux-magazine.com/Online/Features/Getting-started-with-the-Arduino-IDE?utm_source=mlm
#Arduino #IDE #microcontroller #firmware #OpenHardware

Want to program an Arduino microcontroller on the command line? Koen Vervloesem shows you how with Arduino CLI
https://www.makerspace-online.com/arduino-development-on-the-command-line/?utm_source=mms
#Arduino #microcontroller #CommandLine #programming #CLI #IDE

Thursday...and that means a new #Zephyr video I cover using LCD drivers and LVGL to make basic GUIs. Check it out!

https://youtu.be/Kfgln6RdoYc

#IoT #microcontroller #electronics #embedded #RTOS @zephyr

Update on the Finder and UF2 files... it can also cause slowdowns as well as lockups.

https://rasterweb.net/raster/2025/05/04/macos-finder-and-usb-flashing-format-uf2/

Connomore64 - a modern remake of the #Commodore #c64 using multiple rp2040 microcontrollers in parallel.

It features HDMI out, a compatible interface to original hardware such as floppy drives and cartridges, and more.

https://github.com/c1570/Connomore64

I wrote up a post about the issues I've been having with macOS and the USB Flashing Format (UF2) file type.

https://rasterweb.net/raster/2025/05/04/macos-finder-and-usb-flashing-format-uf2/

#strangethings happen if one has wrong #assupmtions... Currently I've #code running on a #microcontroller using unsigned integer variables (16 bit), calculating a bitwise or with these values (hexadecimal, language C):
v = 0x0400;
r = 0x03c2;
r |= v;
...but it seems I get r = 0x0fc2. So there must be anything I currently don't see...
(Correct would be 0x07c2)

New #Zephyr episode! Interrupts can be tricky, so I cover using Zephyr's built-in software timers and connecting Zephyr's abstracted functions to hardware interrupts via the Devicetree. Check it out!

https://www.youtube.com/watch?v=nidpvkzVYGU

#IoT #microcontroller #ESP32 #embedded #rtos @zephyr

Description: "[A] new series focusing on how to build computers [from scratch] using simple electronic devices such as microcontrollers (MCU) and system-on-chips (SoCs) to achieve meaningful and concrete computing capabilities... [Y]ou will also be able to come up with your own computer designs, tailored around your computational needs."

https://www.youtube.com/watch?v=CoUSDWLZC-s

Design and construct a battery-powered GPS receiver and recorder with firmware and a Linux-based GUI application for visualizing the data recorded
https://www.makerspace-online.com/making-a-tiny-gps-position-recorder/?utm_source=mms
#microcontroller #firmware #Linux #GUI #GPS #STM32 #OpenHardware

New #Zephyr video! One big benefit of using an #RTOS is the ability to run multiple threads, and that's exactly what I cover. Check out the full video!

https://www.youtube.com/watch?v=3OSKV2jrAHM

#embedded #microcontroller #ESP32 #IoT @zephyr

Tomorrow is the day! Come hang out and learn about writing device drivers in #Zephyr. Even if you don't have hardware, you can still follow along. And yes, the webinar will be recorded.

https://event.on24.com/wcc/r/4870160/B0654D058D6BC12D5A08B9607370682A?partnerref=sh3

Dmitry is back again with another minimal computer. Last time he managed to boot #Linux on an #Intel4004¹. Now he wants to run #vi, #gcc, and #make, ends up doing it on a tiny #STM #microcontroller with a luxurious 32K of flash and 8K of RAM. The 4004-based machine took a *week* to boot, this one takes just a minute!

It's again made possible w/ #MIPS #emulation. The overclocked host CPU emulates a MIPS #R3000 at 1.65MHz with FPU disabled.

https://dmitry.gr/?r=05.Projects&proj=36.%208pinLinux

¹) https://indieweb.social/@data0/113169928781632253