U ruler - Page 1
Forum section: electronics / general

author: electrolux
author_rank: Regular Contributor
timestamp: February 16, 2014, 12:16:06 pm
content: I was thinking it would be a good idea if Dave could place the relevant pads and tracks on the micro ruler for an SMD electronic level. Who thinks It's a good Idea?PS: It's just an idea.

author: con-f-use
author_rank: Unknown
timestamp: February 16, 2014, 09:32:11 pm
content: Quote from: electrolux on February 16, 2014, 12:16:06 pmDo what now? What is an "SMD electornic level"?

author: kizzap
author_rank: Unknown
timestamp: February 16, 2014, 10:42:27 pm
content: what he is referring to is the pads under where the sizes of the SMD 0805s, etc are. I'm going to assume it is a bad idea, because:a) not every CAD package is the same, thus they might have natively different pad sizes.b) some CAD packages have alternate pad sizes for the same device, andc) you are not always going to want to use a standard footprint size.just my $0.02

author: EEVblog
author_rank: Unknown
timestamp: February 16, 2014, 10:52:10 pm
content: Quote from: kizzap on February 16, 2014, 10:42:27 pmYes, I don't understand what value having the footprints is. There are a couple of other rules that do this already.I included physical size SMD "shapes" on my uRuler as I figured that might be useful to show physical size differences. But actual footprints is a bit pointless IMO because they can vary so much.

author: nitro2k01
author_rank: Frequent Contributor
timestamp: February 17, 2014, 09:10:44 am
content: For the record, subtract one vote for "good" and add one vote for "garbage". I voted before realizing what the question said.

author: Jon Chandler
author_rank: Frequent Contributor
timestamp: February 17, 2014, 01:22:51 pm
content: I think what the OP is asking for is a circuit with an accelerometer and LEDs to indicate when the ruler is level?

author: hans
author_rank: Super Contributor
timestamp: February 17, 2014, 03:39:33 pm
content: A ruler with design data from somebody else isn't going to help screwing up footprints. If you're not sure about footprints, pin pitches, scale, etc., print a test sheet with your footprints on paper 1:1 scale (make sure to set A4 etc. correctly) and fit the actual part.Not to say about density options in some EDA's (like Altium) where you can specify how much "oversize" you want on particular parts.So I don't think this will help a great deal.

author: rdl
author_rank: Super Contributor
timestamp: February 17, 2014, 04:06:26 pm
content: Most of the electronic levels I've seen start at around $50 and they all seem to use digital displays. Might be cheaper using just LEDs, but how accurate would it be? I don't see it adding enough value to be worth the time it would take for someone to design the circuit. Best to just buy a standalone device.

author: electrolux
author_rank: Regular Contributor
timestamp: March 02, 2014, 11:16:07 am
content: Quote from: nitro2k01 on February 17, 2014, 09:10:44 amoh yeah great!

author: electrolux
author_rank: Regular Contributor
timestamp: March 02, 2014, 11:18:11 am
content: Quote from: con-f-use on February 16, 2014, 09:32:11 pmDon't confuse anyone!

author: electrolux
author_rank: Regular Contributor
timestamp: March 02, 2014, 11:20:46 am
content: Iv'e added 'Bad' Just in case, hmm. The poll will close in approximately 1 week. Accuracy plus/minus 4 days.

author: all_repair
author_rank: Frequent Contributor
timestamp: March 02, 2014, 12:23:31 pm
content: The uRuler is more of a service than a product for Dave unless he is a PCB house. You may want to look at Adafruit pcb ruler, and another one by makePCB on ebay. They have your liking.