Hi Mamech, Welcome to EasyEDA. You can find a 16mm pot by clicking on any editor canvas and doing **SHIFT+F** and then searching for: `POT_BITech-TTE_P160KN` You will find an example of this in use in the **Tesseract guitar amplifier** project. :)

thank you for your help, but I have 2 problems now: 1- first, the footprint seems not the same as 16mm Pot. I made the scale 100% (1:1), and I found that the footprint is bigger than 16mm pot. 2- the pot appears as pcb component only, it does not appear in schematic.

The pot I identified for you is a 16mm part. You can check out the datasheet: http://www.bitechnologies.com/pdfs/p160.pdf A footprint will always be slightly bigger than the physical part. It has been proven to fit in the Tesseract project. You can check out the photo and video there. Are you sure you understand what the 16mm refers to in the definition of a 16mm pot? :) 2) You can choose any schematic symbol for a pot and then edit the package and any other attributes in the right hand panel. :)

thank you for your answer 1) yes I understand what the 16mm refers in pot. it refers to its diameter. I used a pc based pcb designer and the drawing on screen was really 16mm and the pins also fits the pcb. 2) yes, I already know that I can choose any pot in schematic and I can edit its footprint. but when I tried to do this , the attribute refused the "POT_BITech-TTE_P160KN" when I pasted it.

1) "I used a pc based pcb designer and the drawing on screen was really 16mm and the pins also fits the pcb." The pins do fit the PCB: have a look at the attachments in the Tesseract project. That said, I think I see your concern about the size of the outline. The width of the pot body outline in the `POT_BITech-TTE_P160KN` footprint is about 20mm so it is about 2mm wider either side than the actual 16mm width of the pot body. OK, so look carefully at the datasheet given for the footprint in EasyEDA: http://www.bitechnologies.com/pdfs/p160.pdf The body is actually 17mm wide! There is no tolerance given on this dimension so maybe we should allow say +/-0.5mm. There's also no tolerance on the pin widths. There is also a little sideways slop in the PCB mounting holes so the outline need to be a little wider than the 17mm maybe allow up to another +/-0.5mm to allow for the pin width and the hole slop. So now the outline needs to be 18.5mm wide to allow for a 17.5mm diameter body sliding +/-0.5mm either side. Now put two pots right next to each other and you don't want the cases to touch. So add another 0.5mm so that the the left edge of the silkscreen of one pot could overlap the right edge of the silkscreen of the other. We're up to 19mm now. What the heck, 20m means any misalignment in the silkscreens or anything else gets allowed for and it's just a nice round number. If you really want a narrower silkscreen outline for a so-called `16mm` pot then that's easy to fix. You can take the `POT_BITech-TTE_P160KN` footprint and edit it to make it whatever width you want. I just did: POT_16mm_PCB_MOUNT https://easyeda.com/andyfierman/component/POT_16mm_PCB_MOUNT-9RdI4OWi2 to demonstrate the point. It's easy! https://easyeda.com/Doc/Tutorial/PCBLib.htm#Creating-The-PCB-Libs 2) Sorry but I don't understand "but when I tried to do this, the attribute refused the "POT_BITech-TTE_P160KN" when I pasted it." If I choose any pot from the library and place it into a schematic I can then paste `POT_BITech-TTE_P160KN`into the `package` attribute in the right hand panel. ![enter image description here][1] Can you not do this? If you can't then please post a Bug Report including your browser and OS so we can investigate. [1]: /editor/20160111/5692df9e7ed23.png

Hello.. I, too, ran into this problem... I'm making my first schematic, to test-drive easyeda for the first time, it's a simple circuit for a 220v light dimmer... which includes a rotary pot, yesterday I searched without success, but today I found this post.. that's the pot I need, but when I paste "POT_BITech-TTE_P160KN" in the package of my pot, when I try to make the PCB, I get "verify the packages" with only one row: the pot, status "error". What info do you need to help me? I'm using Google Chrome under Debian Linux. When I try to correct the package error, I get a long list of packages (with no explanation, only the code) but I don't see any related to "pot" or "potentiometer", and it would be impracticable to click each and every one to see the "preview" in the little window, until I find the right one, if there is...

Can you make your project public so we can look to see what the problem might be? Have you checkedc to make sure the pin names and numbers on the schematic symbols match those on the packages? You can edit either but they must match, pin for pin.