A development board for the STM32F042 TSSOP package

Andy Brown designed a development board for the STM32F042 in the TSSOP20 package: Development board features USB. The 042 series supports USB and although 32Kb is not a lot of space to include a USB driver and your application logic it does make sense to hook up those USB data lines and thereby enable USB device development. […]

Raspberry Pi garage door controller

As a follow up to yesterday’s Raspberry Pi and ARM uC Breakout + DirtyPCBs mini-review post,  hipfan75 has posted the completed Raspberry Pi-based Garage Door controller project: Right now, all of the sensors and actuators are connected to Raspberry Pi GPIOs. At some point I may move them to the STM32. I have disabled I2C […]

A GUI and CLI utility for EFM32’s UART bootloader

Mario writes: I’ve been doing mostly sensor-based systems and I think these microcontrollers are the perfect fit. ARM Cortex (they go from M0 to M4, and their series seem to keep growing), an architecture that was specially designed for low-power sensor-based embedded systems, allowing to measure “stuff” while the CPU is stopped, a nice set […]

tinyK20: New board with micro-SD card

Erich of MCU on Eclipse has posted an update on his open source tinyK20 project. We wrote about it previously: Changes from the earlier version (see “tinyK20 Open Source ARM Debug/Universal Board – First Prototypes“): 1.Replaced the K20 crystal with one having a smaller footprint. 2.Added Micro SD card socket on the back (same socket as […]

TinyK20 open source ARM debug/universal board

Erich has posted an update on his open source ARM debug/universal board project. We wrote about it previously: After the proof of concept phase (see “Proof of Concept: Open Source ARM SWD Debug and General Purpose Board“), the first prototypes are ready I had the first prototypes of the board we have produced internally in my […]

Proof of concept: Open source ARM SWD debug and general purpose board

Erich of MCUonEclipse writes: The Freescale FRDM boards are using a Kinetis K20 based circuit (see “OpenSDA on the Freedom KL25Z Board“): However, that firmware is not open: the K20 is secured and protected, so the firmware cannot be changed. Newer Freescale FRDM boards like FRDM-K22F2 and FRDM-K64F do have an open source bootloader and debug […]

TI releases the MSP432 microcontroller

Introducing MSP432: MSP’s new low-power 32-bit ARM® Cortex®-M4F MCUs TI is announcing an expanded MSP portfolio including a new family of 32‐bit processors built on the ARM Cortex‐M4F core. The first family includes the MSP432P401x MCUs with 48MHz speed, 1MSPS 14‐bit ADC, up to 256KB flash, up to 64B RAM and low‐power operation of only […]

ARM PRO MINI, an open source ARM M0 microcontroller board

Zapta designed this open source ARM M0 microcontroller board, that is available at Github: ARM PRO MINI is a small barebone open source ARM M0 microcontroller board that is great for quick prototyping and as a starting point for your own ARM based custom designs. It was designed and named after the venerable Arduino Pro […]

Audible frequency chirp sonar with the Stellaris Launchpad

Jason Bowling writes: Over the last year I’ve been working towards an underwater sonar system for ROVs and surface boats. In order to learn the basic signal processing required to detect the echoes, I initially got a simple sonar working in air with a desktop conferencing USB speaker/mic running on Windows. A writeup, including source, […]

Atsam3u + SDCard + USB cdc/msd + fat32 with at91lib & Chan’s fat code

Limpkin writes: This development platform is primarily aimed at facilitating the realization of high speed (several GHz) functions that quantum physicist need for their experiments, as well as providing data collection capabilities. Without going into many details, it will physically be a 3U rack where users can plug different eurocard modules that perform specific functions. […]

Freedom freescale KL25Z board

Jan Henrik posted another Instructables, an introduction to the Freedom Freescale KL25Z board: Hello, today I want intoduct you to the Freescale Freedom Board with the KL25Z processor. It is a development board, builded and selled by Freescale. It features a ARM® Cortex™-M0+ , working on 48Mhz. Features: 48Mhz 128KB Flash 16KB SRAM USB OTG An […]

Electromagnetic Field camp August 29-31, 2014

The 2014 Electromagnetic Field camp is set for August 29-31, 2014. This annual gathering will be held in Bletchley, UK, and feature a camping festival with a power grid and high-speed internet access; a temporary village of geeks, crafters, and technology enthusiasts that’s lit up by night, and buzzing with activity during the day. Previous […]

Implementing an all digital phase-locked loop

Kalle Hyvönen of DGKelectronics writes: I’m currently building an induction heater. I’ve already built one controller based on an analog PLL so this time I decided to go all digital and use an ARM Cortex-M4 microcontroller (STM32F303). For this I needed to implement a digital phase-locked loop running on the MCU. Principle An ADPLL is […]

An open letter to NXP Semiconductors about LPC1114FN28

ytsuboi  wrote an open letter to CEO of NXP, and get replied: I sent this e-mail to the CEO of NXP Semiconductors. (23 July 2014, 4:36am JST) To: NXP Semiconductors N.V‎ Richard L. Clemmer, Executive Director, President and CEO Dear Mr. Clemmer, About a week ago, I found an unbelievable information about LPC1114FN28 on Digikey and Mouser. […]