The STM32 dev boards already make this pretty easy. (Although setting up a free toolchain is a bit of a pain.)
ARMing a Breadboard – Everyone Should Program an ARM
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Re: ARMing a Breadboard – Everyone Should Program an ARM
#12The STM32 dev boards already make this pretty easy. (Although setting up a free toolchain is a bit of a pain.)
Really?, it's pretty easy in my opinion on Debian/Ubuntu at least.
I just installed gcc and use openocd to program.
I'm fairly sure I just did "sudo apt-get install gcc-arm-none-eabi" for the compiler.
http://libopencm3.org/wiki/Main_Page is worth looking at too, in case you haven't seen it.
Re: ARMing a Breadboard – Everyone Should Program an ARM
#13I too am often surprised at how often people reach for an Atmel 8 bit AVR chip rather than an ARM. It is a testament to the momentum that Atmel built, the avr-freaks community and the amazing cost effectiveness of it all.
But now we're seeing ARM chips with built in clocks, and fewer base components required and I think the end of that AVR dominance is on the horizon. And that is why Dialog is buying Atmel[1].
Getting started with ARM is easy with one of ST's Nucleo boards (which are kinda Arduino Shield compatible, the biggest issue I have hit is that i2c at 3.3v is an issue on some boards). Their Discovery boards are even more capable but can be a bit more work to breadboard with.
Once ARM put out a supported GCC on launchpad.net it really made it easy to get a development environment up (no more crosstool or other package for building a cross compiler).
Re: ARMing a Breadboard – Everyone Should Program an ARM
#14An an electronics hobbyist wannabe, may I please have the links for parts / assembling the 5v to 3.3v circuit needed to power this thing ?
Re: ARMing a Breadboard – Everyone Should Program an ARM
#15Earlier quoted context omitted.
You can also use a voltage divider if you are willing to suffer a bit of leakage current. That's just 2 resistors.
The linear regulators we are talking about are basically voltage dividers with feedback. They aren't significantly more efficient than your design, though they are ton less noisy.
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Re: ARMing a Breadboard – Everyone Should Program an ARM
#16An an electronics hobbyist wannabe, may I please have the links for parts / assembling the 5v to 3.3v circuit needed to power this thing ?
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Re: ARMing a Breadboard – Everyone Should Program an ARM
#17The STM32 dev boards already make this pretty easy. (Although setting up a free toolchain is a bit of a pain.)
Maybe 3-4 years ago. With the Launchpad version of gcc for ARM controllers, OpenOCD and gdb, it is a breeze now.
Re: ARMing a Breadboard – Everyone Should Program an ARM
#18An an electronics hobbyist wannabe, may I please have the links for parts / assembling the 5v to 3.3v circuit needed to power this thing ?
Look at the application notes for any LDO 3.3V linear regulator i.e., MCP1702. Or you can power it from a 3.3V USB Serial cable...
Re: ARMing a Breadboard – Everyone Should Program an ARM
#19You can buy Arduinos on Aliexpress for USD1.80[1] and there are no comparable offers for ARM boards.
[1] aliexpress.com/item/Free-Shipping-Nano-3-0-Controller-Board-Compatible-with-Arduino-Nano-CH340-USB-Driver/2021663360.html
Re: ARMing a Breadboard – Everyone Should Program an ARM
#20An an electronics hobbyist wannabe, may I please have the links for parts / assembling the 5v to 3.3v circuit needed to power this thing ?
If you're interested in a higher-power version, I just used the SC189 3.3V switching power supply in a design of ours. It can supply 1.5A (provided of course your upstream power can too).
The datasheet (at http://www.semtech.com/images/datasheet/sc189.pdf) has several example circuits.