frob wrote:There's no such thing as a 3-layer board- the next step up is 4-layer, then 6, etc. they're done in pairs to prevent board warp, and the process just works out better that way- 3-layers would be more expensive than 4 and cause issues as a result.
frob wrote:That's an interesting idea to sell it as kit with through-hole parts unmounted.
i'll consider doing that for the initial run but not sure what if any savings it may produce ,because only a few of the optional connectors are actually through hole,
Oli wrote:I think it should offer holes for the stepstick / polulu.
Oli wrote:- I am very against having an LCD and even to an extent the microSD slot- these are features the bulk of people won't use, but will add significant cost and complexity.
dzach wrote:...The ideal would be to be able to simply cut the copper traces around the SMT chip and use some existing holes to mount a spare polulu, like in the following picture (it's a stepstick):
orcinus wrote:...(graphic) LCDs typically require more processing power from the host MCU and can be fussy about timings.
Dealing with a character display is much much easier....
dzach wrote:I like very much this community driven hardware development. It's like a dream come true
dzach wrote:I interpreted the drawing on page 9 in the Allegro A3988 Datasheet as a 3-layer PCB. Is it not?
dzach wrote:I have recently purchased a full RAMPS kit (including the Arduino) at $133 to accommodate the ORD Bot. The RAMPS came with the PCB and all components (SMT and thru hole) unsoldered. The assembled kit was at $173, that's 30% more. I believe it's a good idea to present a couple of options to the users to choose; some may find the price attractive, others, driven by captivating motos like "If you didn't build it, you will never own it", follow that spirit. You'll never know.
butterfingers wrote:Came across this that might be of interest:
http://www.kickstarter.com/projects/365 ... f=category
Users browsing this forum: No registered users and 33 guests