gwdeveloper 275 Posted February 29, 2012 Share Posted February 29, 2012 No prob. The CC2500 module weighs .72 grams. Quote Link to post Share on other sites
MattTheGeek 99 Posted February 29, 2012 Share Posted February 29, 2012 I don't have a precision scale, but my guess is few grams (without the CC2500 module or a battery.) 3 grams is about right. ~1.50 or so for the PCB. The MSP430G2553 should be around 70mg... Quote Link to post Share on other sites
RobG 1,892 Posted March 1, 2012 Share Posted March 1, 2012 I am using small utility knife to score, then just snap with pliers. Those are 1mm boards BTW. Excellent. Probably much cleaner than the rotary tool I was thinking of using. :? Here's the tutorial GeekDoc, bluehash, krzyk2 and 4 others 7 Quote Link to post Share on other sites
fatihinanc 14 Posted March 1, 2012 Share Posted March 1, 2012 Here's the tutorial Sweeet Quote Link to post Share on other sites
kff2 22 Posted May 5, 2012 Share Posted May 5, 2012 Rob, a silly question if you don't mind. If I am to use this board without a voltage regulator and external memory, what passive components do I need? Do I need anything beyond one or two small decoupling capacitors? Can you please explain what the various items on your BOM are for? Thanks again for designing this board. I'll try to assemble one as soon as my 2553 arrives. Quote Link to post Share on other sites
RobG 1,892 Posted May 6, 2012 Share Posted May 6, 2012 If I am to use this board without a voltage regulator and external memory, what passive components do I need? Do I need anything beyond one or two small decoupling capacitors? Can you please explain what the various items on your BOM are for? The only thing that you need for the 2553 board to work is 0.1 decoupling cap, 1n reset cap, and 47k reset resistor (C2, C1, R1 or C6, C5, R4.) Quote Link to post Share on other sites
zeke 693 Posted May 6, 2012 Share Posted May 6, 2012 Uhm... I haven't received my breakout boards yet. Can someone tell me if they've been sent out yet? Quote Link to post Share on other sites
larsie 121 Posted May 7, 2012 Share Posted May 7, 2012 I got mine. Quote Link to post Share on other sites
krzyk2 11 Posted May 7, 2012 Share Posted May 7, 2012 I've received my 10 boards about 2 weeks ago Quote Link to post Share on other sites
MattTheGeek 99 Posted May 7, 2012 Share Posted May 7, 2012 Uhm... I haven't received my breakout boards yet. Can someone tell me if they've been sent out yet? I sent your boards around march 26th, but they were erroneously returned for postage (They claimed that the postage stamps were taped on, even though you could feel them and peel them off :problem: ). So I resent your boards on march 28th. https://tools.usps.com/go/TrackConfirmA ... 61336050us I hope it's not being held at customs. :-| Quote Link to post Share on other sites
kff2 22 Posted May 8, 2012 Share Posted May 8, 2012 If I am to use this board without a voltage regulator and external memory, what passive components do I need? Do I need anything beyond one or two small decoupling capacitors? Can you please explain what the various items on your BOM are for? The only thing that you need for the 2553 board to work is 0.1 decoupling cap, 1n reset cap, and 47k reset resistor (C2, C1, R1 or C6, C5, R4.) Thanks for the explanation. By listing two sets of capacitors / resistors, are you saying that either combination will work (i.e. the 47k resistor can go into either the R1 or R4 spot for reset)? If so, what was the reason for mirroring traces? Also, I understand what the 47k resistor does (allows programming), but why is a reset cap also needed? I saw the Launchpad diagram once and assumed that the reset cap was there for debouncing the reset button. Does it also serve a purpose for starting the microprocessor? On breadboards, I simply pull reset high, and that has always worked fine. Quote Link to post Share on other sites
RobG 1,892 Posted May 8, 2012 Share Posted May 8, 2012 By listing two sets of capacitors / resistors, are you saying that either combination will work (i.e. the 47k resistor can go into either the R1 or R4 spot for reset)? If so, what was the reason for mirroring traces? There are two versions of the CC2500 board, the red one has two identical msp430 boards (but the component names are different,) the green one has only one (C1, R1.) Also, I understand what the 47k resistor does (allows programming), but why is a reset cap also needed? I saw the Launchpad diagram once and assumed that the reset cap was there for debouncing the reset button. Does it also serve a purpose for starting the microprocessor? On breadboards, I simply pull reset high, and that has always worked fine. The capacitor assures proper power-up and filters the noise that might cause unwanted resets. MCU will work with just a pull-up resistor, but this is what's recommended by TI. Keep in mind that values larger than 1nF will cause Spy-Bi-Wire issues. Quote Link to post Share on other sites
fatihinanc 14 Posted May 13, 2012 Share Posted May 13, 2012 My package was arrived two days ago. PCB's are looks great And well packaked Thanks for doing this MattTheGeek... Quote Link to post Share on other sites
zborgerd 62 Posted June 23, 2012 Share Posted June 23, 2012 Was there a manufacturing problem with these red boards? I just ordered a few from the 43oh store and they are missing the most of the silkscreening. Otherwise, they look very nice. Quote Link to post Share on other sites
bluehash 1,581 Posted June 23, 2012 Author Share Posted June 23, 2012 I'll take a closer look and report. Quote Link to post Share on other sites
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