Jaycar is probably getting someone to reverse engineer it now.
Other stuff to add/remove?
Maybe do away with the voltage spacing table and add pads for more SMD dimensions?
I'm thinking of some schematic symbols?
Maybe a Raspberry Pi and Arduino pinout
How about some of the formulas/constants as per vintage HP mug?
And I'm still none the wiser as to how to source them direct from Dave.
If you could buy one then you'd know about it.
The things on the German ruler, and to some extent Dave's, would be better served printed single sided on acetate (or a more modern equivalent). Easier to lay the footprints over the top of a PCB to see what size they are. Maybe the ultimate version would have several, pinned together at one end like a set of feeler gauges. That would free up more area to include all the good ideas that everyone has come up with. And to do things like showing voltage spacings physically, so you could put the ruler over a board and see directly what voltages were supportable.
It would help in resolving a fundamental conflict with this ruler, which is trying to be two things - a measuring device and a pocket reference.
Other stuff to add/remove?
Wavelength in vacuum along the ruler. On the other hand on a 20cm ruler the first tick would be at 1.5GHz. I know what you need: a longer ruler ;-) Anyways, when it comes to tables (which consume a lot of space unfortunately), frequency and time vs wavelength would be nice.
Tables are easy to print on paper or to view on a monitor. I think most practical for such a ruler are different pad sizes, distances, foot prints, Rack Unit heigts, drill sizes for bolts and clearance for nuts, ... that sort of thing.
Or embed a button cell and some different color LEDs with known wavelengths.
Tables are easy to print on paper or to view on a monitor. I think most practical for such a ruler are different pad sizes, distances, foot prints
I don't understand PCB rules covered in PCB footprints, what real use are they?
Tables are easy to print on paper or to view on a monitor. I think most practical for such a ruler are different pad sizes, distances, foot prints
I don't understand PCB rules covered in PCB footprints, what real use are they?
To have a reference of the real world scale after being working on a scaleless IDE in a monitor or digital datasheet, etc. At least that's for me. I check every once in a while to a real part to realize the actual scale I'm working on.
JS
I don't understand PCB rules covered in PCB footprints, what real use are they?
I have the ADAfruit ruler and it has a good assortment of footprints. It is somewhat useful when etching your own boards at home to have a professional made board to compare with. The thing I use the most are the hole table/ wire gauge and your existing ruler is more comprehensive in that regard. Selfishly I would ask you not to include footprints as I already have the Adafruit for that. I do want to order something close to your last ruler so get busy making them! (please!) vox populi has spoken!
Dave, I'm currently studing electronics and I suggested to my teacher to give one of your uRuler 3 to each student at the end of first year, he thought it was a great idea and asked how much would 150pcs cost?
Oscar
I'm pretty close to finishing the new version...
Any update on the design?
Following this post and looking forward to the new one! Ready to buy...
.... and uPhone is new thing for a social peoples.
I had to ..sry.
Not to mock uRuler, but the i-age.
I want one, especially if it is blue.
