Life, the universe and everything - Technical Ambitions

Open Source DragonFly II STM32 ARM MCU

Click here to go to http://dragonflymcu.com




Evaluation board.

Click here to view the User Manual for the DragonFly II

With example code compiled on CooCox



Features
• STM32F103RBT6 Arm Cortex MCU @ 72 MHz.
• On Chip RTC With Battery.
• 3 USARTS ( Com Ports ), COM1 can be TTL or RS232.
• Boot Mode selectable.
• Can be programmed through SWD 3 wire interface or via COM1 RS232.
• Many available I/O port bits including ADC Channels, CAN bus etc.
• Power supply can be 3.3V without onboard regulator or with onboard regulator input must
 be between 5V to 7V.
• Micro SD Card for data storage.
• 2 row 20 pin connector with standard 2.54mm spacing pins ( 40 pin socket ).
• Supplied with source code examples including working example of FAT FS in C.
• All examples compiled with free CooCox IDE with CodeSourcery.

Introduction
The DragonFly MCU is one of the few small 40 pin DIP socket STM32 MCU modules that has an
onboard micro SD socket.


There is a wealth of information on the internet about the STMicroelectronics www.st.com/stm32/
STM32 MCU.


This powerful yet cheap 32 bit microcontroller can be used in many applications from control to data
acquisition.


The DragonFly MCU is intended to be an easy start for beginners or hobbyist but the module can also
be incorporated into a user end product.


CooCox with Code Sourcery was chosen as it is completely free and easy to use for beginners to get
started using the STM32.


Several complete C code examples are supplied with the module that can be imported and compiled
with CoIDE out of the box and run as is or modified by the user.

Guest house - Caledon23 - George

I rarely promote a guest house even though I go regularly to them. I love just going out and spoiling myself and my partner every now and then and what better way than to go relax at a guest house where everything gets done for you. After the running around of the week there is a need to just relax and enjoy.

This December I had the good fortune to hit the road and just see where it takes us. It was great. NO planned stays anywhere. SO there was also no reason to rush anywhere. Everyone said we were mad to just go on the whim and yet we found places to stay even though December is a peak season. We ended up being referred to a guest house that had just been started by a lovely couple. Hendrik and Linda Aucamp.

Man what a pleasure. Hendrik is a builder and I think he spared no expense to make the place beautiful. He really went to town and as he says, "Why skimp on the little things since they are the things everyone notices." For the very first time in about 20 years I woke up feeling refreshed and without any stiff or sore back. I now realise the importance of an awesome bed. We tend to spend so much time in our beds yet we skimp on the one thing we really should splurge on.

I am really happy to recommend Caledon23 Guest house in George. Situated in Caledon street number 23 (the place to be apparently in George) it was a stay to remember. Hendrik and Linda are a really friendly and outgoing couple and I know that you will enjoy your stay there.

OH - and the best thing is the price. For a guest house that has all the finery that they have I was expecting to pay a fortune. However the price is almost the most attractive item. At under R800 for a couple bed and breakfast included it was amazing.

If you are ever in the neck of the woods in George, go look up Hendrik and Linda Aucamp at Caledon23 Geust house. You wont be sorry. -

johnkweber