Hi all,
New to Fritzing but hooked. Already done one project with a dimmer.
Now looking at building a thermostat using amongst other a DIP reed relay, HE721. Cant seem to find that part anywhere, nor anything with same pins.
http://m.littelfuse.com/~/media/electronics/datasheets/reed_relays/littelfuse_reed_relays_he700_datasheet.pdf.pdf
Any tips on where to find one, or get one created 
Thanks,
Richard
Actually I think it works as intended, at least on my system. In PCB view you get a double row header. In Breadboard and schematic you get a single row because a double would not work in breadboard and a single row is easier to work with in schematic.
A simple work around for making a PCB would be to use 2 mystery parts set to double row and 4 pins.
If you want a custom part you could start with the mystery part set to double row and 16 pins. Then open it in the editor and save it as a new part. Then you would have to make changes to all the SVGs (with Inkscape or Illustrator), meta data and pin definitions. Making a new part is a lot of work for little advantage over using 2 mystery parts.
Parts creation is complex and poorly documented (as you may have noticed ) so please don't hesitate to ask for help, we all win if we help you to make more parts. As I thought from your first post, you are %90 there. Two problems: you are missing the definition for connector6terminal (that is why the wire in to pin 7 on the switch in schematic is in the center of the pin instead of the end like the others) and you need to resize the document in Inkscape. To do that with the schematic svg loaded in Inkscape, click edit->select all and then file->document properties->page->Resize page to content (in the middle of the window), click on that and then on the Resize page to drawing or selection which appears and it will fix up your problem with the missing line by adjusting the viewbox. Although it isn't hurting anything, you can also shrink the box around the switch by deleting some of the unused elements still present from the original part (which is what is causing the view box to be so large). That is
a little more complex because it is heavily grouped which makes finding the offending elements harder. Luckily Inkscape has an extension that ungroups (usually but not always) everything , so edit->select all then Extensions->Arrange->deep ungroup then click apply and it will ungroup the whole thing. Now you can drag a selection box (by click and drag) around the area at the top of the part where there is view box for no apparent reason. That will show a series of small lines from the original part. With them selected the delete key will remove them. Now edit->select all and resize document gets the viewbox to a more appropriate size. You now need (with the entire document selected) to click object->group then use xml editor to change the id of the created group to schematic to set the correct layerId that the ungroup removed,
file-->save as plain svg and you should be away (you do need to use a text editor to delete the px from the font-size statements in the xml though, Inkscape won't do this and Fritizing won't accept them, I usually just delete all instances of px in the file). Hope this helps!
Peter
You may be correct, I was thinking it is broken (and surprised that something so basic was broken) because some breadboads do use dual headers but this explaination makes more sense. Thanks!
Peter
I'm throwing together my first Fritzing project, and can't seem to find the Generic DIP-16 part in the library. I've searched several different ways, to no avail. Point me in the right direction to find the generic parts?
To make your own part I'd start from the dip-relay 1 in core parts which appears to be the correct package but possibly not the correct pin out. It is relatively easy to modify it if you supply the exact model of he721 you want since they come in several versions with different contacts.
Peter
Core parts ICs first icon. Drag it to a view (such as breadboard) and use inspector (right bottom window) to change the pins from 8 to 16. You can't change it while in the parts bin only in a sketch.
Peter
I now found OP482, it has the correct spacing and position of pins - just 14 instead of the 8 I need.
I'll see if I can edit that.
Thanks! A quick newbie-appropriate answer for a newbie question. I couldn't ask for more.
The Op482 is an op amp. Both breadboard and schematic are wrong. You would be better off starting from the dip relay (search for dip-relay in core parts with the magnifying glass icon) which has the correct number and I think spacing of pins and a relay in schematic (rather than 4 op amps) ...
Peter
The dip-relay 1 unfortunately have the wrong pin spacing both horizontally and vertically. The OP482 seems to be a much better match.
This is what I got after 30 mins of editing the OP482.
https://www.dropbox.com/s/spnw2dgcfjax1rp/HE721.fzpz?dl=0
I had to watch some Eagle tutorials because I couldn't get it to do what FZ does, and now I don't have Eagle envy. Talk about doing things the long way - I was getting repetitive strain just watching all those extra button presses -. To move a group you click group button, box that parts, select move group button, and move it. Also their nets aren't as good as FZ's pointy box, because they use plain floating text - I thought they were just text labels, not actual nets -. It also has the "pay attention to junctions" like FZ, ie wires touching aren't connected until you put a junction dot on it. Thankfully the views are connected, unlike KiCad. Like I thought, after seeing an Altium expert stumbling through KiCad, you can't just jump from EDAs without watching tutorials because they all have idiocentrics. Next week I'm going to have to do EasyEDA, so it starts all over again.
I'm not seeing your problem. Below are images of your part (which other than pcb looks reasonable) and the identical in package (but with a correct pcb and more detailed schematic) dip relay from core. Both are .3in wide (as is the data sheet for your relay) in breadboard but the schematic from core (with 0 effort) shows the relay coil and contacts in schematic. Your pcb appears to have a scaling problem and be incorrect according to the datasheet. It isn't .3 in wide in a standard IC format as the relay is according to the supplied data sheet.
Peter
Yep that looks to have got it!
Peter
I realize this is an old topic but since it comes up in Google searches and there actually is a proper solution, I'll add it here.
You can put an "overline" on top of any character by following it with Unicode character 'COMBINING OVERLINE' (U+0305). The overline will merge with the character. To do this with a whole word, insert the overline after each character in the word.
eg. RESET becomes R̅E̅S̅E̅T̅
This works everywhere you would want it to — unfortunately, the official "Droid Sans" font doesn't render it very well. It's an imperfect but practical solution.
Alternately, Unicode character 'COMBINING MACRON' (U+0304) can also be used. It works in very much the same way but may not combine with multiple characters as well. I also don't think it is as semantically correct.
Hope that helps someone.
Thanks Peter for putting time and effort in helping a beginner
The D31A relay I had found before in fritzing app and even used that in my complete Thermostat design. Until I printed it the first time and tried to match components, then it was clear it had the wrong size and pin layout.
Exactly as your PCB image above shows the D31A is bigger, and that is what I see when printing as well and trying to fit a real HE721 to it, scale is off.
Maybe I'm doing something wrong (since I'm learning as I go along), but I guess the printed pcb needs to fit a real component for it to make sense?
On a printed paper with HE721 relay on top.
/Richard
The FZ DIP relay is 17x10mm, and the datasheet you supplied is 19x7.5. Did you link the wrong datasheet or is your printed out drawing not 17x10mm.
That relay looks like a DIP16 x 0.300". I vaguely remember Peter making one of those.
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