Starting With ARM - Page 1
Forum section: electronics / beginners

author: Precious Roy
author_rank: Contributor
timestamp: November 10, 2015, 01:12:55 pm
content: Hello,i am pretty new to electronics and have done some projects with the arduino. i quickly moved to direct(no arduino bootloader) programming for the avr. Now i want to start to broaden my horizon and try to use a arm in one of my project. The only problem is that there are so many and i cant make pcbs with foot prints smaller than TQFP.i did find the LPC1114FN28 that Hack-a-day talks abouthttp://hackaday.com/2015/10/09/arming-a-breadboard-everyone-should-program-an-arm/its just i cant find a source for it, and when i do its quite expensive for a noob who has released the magic smoke in the passed.so i was wondering what would you recommend for a good starter arm that is easy to use and make pcb's for :}

author: daybyter
author_rank: Frequent Contributor
timestamp: November 10, 2015, 01:19:11 pm
content: http://www.stm32duino.com

author: zapta
author_rank: Super Contributor
timestamp: November 10, 2015, 01:40:48 pm
content: Quote from: Precious Roy on November 10, 2015, 01:12:55 pmMay I ask why?Also, search for Arm Pro Mini, it's a simple ARM based open source board design.

author: Cliff Matthews
author_rank: Unknown
timestamp: November 10, 2015, 03:05:01 pm
content: Quote from: Precious Roy on November 10, 2015, 01:12:55 pmHow about this?http://www.ebay.com/itm/NXP-LPC11C14-LPC11C14FBD48-ARM-LPC-Cortex-M0-Development-Evaluation-Board-/251173121623In fact, the whole store looks yummy!http://stores.ebay.com/Development-Tools-Store?_trksid=p2047675.l2563

author: Precious Roy
author_rank: Contributor
timestamp: November 10, 2015, 03:46:22 pm
content: zapta: my cnc can do a lot but anything smaller is just impossible.Cliff Matthews: that does indeed look like a cool chip let me do some more research on that one thanks

author: zapta
author_rank: Super Contributor
timestamp: November 10, 2015, 04:18:04 pm
content: Quote from: Precious Roy on November 10, 2015, 03:46:22 pmLPC11C14 comes 0.5mm pitch, right?The LPC11U35 (the one used in the Arm Pro Mini) goes are to 0.65mm pitch and you get more ROM/RAM, USB including a great USB bootloader.Another option is to pick your ideal MCU, design an adapter PCB for it, including essentials such as caps and crystal, (small PCB so should be very cheap on OshPark) and then mount it on your home made PCBs.

author: Precious Roy
author_rank: Contributor
timestamp: November 10, 2015, 04:45:33 pm
content: zapta: i have never had a pcb made but for that price i might have a try, thanks. also how does the LPC11U35 comunicate over usb? is it serial(something like ftdi on arduino) or does it use its own driver for that?

author: zapta
author_rank: Super Contributor
timestamp: November 10, 2015, 04:56:49 pm
content: Quote from: Precious Roy on November 10, 2015, 04:45:33 pmI am using it in serial mode. Look at the hello world example on github. mBed also has drivers for it for serial, keyboard, mouse, etc. I use it with Max OSX, didn't have to install drivers.To upload a new program you wrote, connect to your computer, click on the ISP button, it will get into the USB bootloader mode and will mount a disk drive on your computer. Drag the new binary file to that drive and click on the RST button.If you use lpcxpresso/exlipse, it also has a script that does the copying automatically at the end of the build. You just press ISP for the bootloader mode and RST to run your program.The bootloader is in a factory ROM so it's is protected. The chip is ready to go as soon as you solder it, no need to preprogram bootloader, etc.(I was in your exact situation a year ago and my research lead me to the LPC11U35. It works great for me and already done a few custom boards with it)

author: Precious Roy
author_rank: Contributor
timestamp: November 10, 2015, 07:10:16 pm
content: zapta: thank you so much, the more i am reading the more i like it.Edit:Just wondering where did you buy your arm pro mini? well souring the parts is not to expensive ether.

author: zapta
author_rank: Super Contributor
timestamp: November 11, 2015, 02:53:54 am
content: Quote from: Precious Roy on November 10, 2015, 07:10:16 pmI build them at home. I have a few spares, can mail you one if you will PM me with your shipping address.

author: Precious Roy
author_rank: Contributor
timestamp: November 11, 2015, 11:32:34 pm
content: Quote from: zapta on November 11, 2015, 02:53:54 ammessage sent :}