Stellaris® LM4F120 LaunchPad for $5 - Page 1
Forum section: electronics / general

author: andyg
author_rank: Regular Contributor
timestamp: September 06, 2012, 12:52:54 am
content: Thought some of you might be inerested. TI is offering this board for $5, max 2 per person. It uses one of their newLM4F120H5QRARM Cortex-M4 microcontroller. (80MHz, 256kB flash, 32kB RAM, USB). Here is the linkhere.

author: poorchava
author_rank: Super Contributor
timestamp: September 06, 2012, 09:23:47 am
content: And i thought MSP430 launchpad was a high value for money. Ordered two of those new boards. Piety that they start shipping on 25th.

author: T4P
author_rank: Super Contributor
timestamp: September 06, 2012, 04:56:03 pm
content: Quote from: poorchava on September 06, 2012, 09:23:47 amThanks for the confused spamActually 29th

author: poorchava
author_rank: Super Contributor
timestamp: September 12, 2012, 09:28:21 am
content: I've checked one more time and it still says 25th (but delivery time has elongated to 2-6 weeks). I guess it probably depends on your location (?)

author: Pariah_Zero
author_rank: Newbie
timestamp: October 01, 2012, 05:54:51 pm
content: Well, I ordered one; it'll be interesting to play with.

author: tokuro
author_rank: Newbie
timestamp: October 03, 2012, 04:10:52 am
content: I just got mine... I can't install drivers for my Win8 (64bit) box....

author: KedasProbe
author_rank: Frequent Contributor
timestamp: October 05, 2012, 08:33:00 pm
content: I ordered 2 from Farnell, I expect them Monday (I didn't noticed a max. quantity of 2)My first ARM µP to 'play' with, that I think will be used in my (to be designed) PCB.There is no DAC, but I don't think I will need it (via I2C->BT->Phone Apps can make a sound)To start:http://processors.wiki.ti.com/index.php/Getting_Started_with_the_Stellaris_EK-LM4F120XL_LaunchPad_Workshop?DCMP=Stellaris&HQS=stellarislaunchpadworkshop

author: westfw
author_rank: Super Contributor
timestamp: October 06, 2012, 04:17:09 am
content: QuoteThanks! That's looking like a better-than-average set of videos...

author: rsjsouza
author_rank: Super Contributor
timestamp: October 08, 2012, 12:06:12 pm
content: Quote from: KedasProbe on October 05, 2012, 08:33:00 pmIf you can spare the slightly higher cost ($17.00), you can even try theF28027 Launchpad, which sports PWM outputs (and a slightly higher speed of 60MHz).--Rafael

author: Mechatrommer
author_rank: Super Contributor
timestamp: October 08, 2012, 01:17:46 pm
content: Quote from: KedasProbe on October 05, 2012, 08:33:00 pmbad luck! i ordered 2. but anyway just for fun its cheap, the site says 2-8 weeks delay, bugger, i'll wait.

author: T4P
author_rank: Super Contributor
timestamp: October 08, 2012, 02:29:55 pm
content: Quote from: rsjsouza on October 08, 2012, 12:06:12 pmHuh? Isn't their M4 80MHz? It has PWM pins if i read correctly.

author: rsjsouza
author_rank: Super Contributor
timestamp: October 08, 2012, 03:26:03 pm
content: Quote from: T4P on October 08, 2012, 02:29:55 pmWell, the LM4F description says its Flash memory runs as single-cycle up to 40MHz sustained or slightly higher due to the presence of a prefetch buffer. You will get 80MHz if running your entire code from RAM or if your code calls some Stellarisware libraries (for the peripherals) stored in its internal ROM (single cycle as well).The F28027 flash memory runs at full clock speed (60MHz) but does not have any library stored in ROM.Yep, you are right regarding the PWM outputs...Another interesting thing on this F28x Launchpad is the presence of an isolated JTAG - probably that is what the price difference comes from.