💬 In Wall AC/DC Pcb for MySensors
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I have and might in the future... at the moment I'm focusing on safety, test and size. Rev 4 is ordered today with smd components. Let's see how that evolves first.
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Hi @sundberg84,
I was talking with a friend of mine who has pcb design experience about your board, and he told me to tell you that it would be better to add creapage protection between the 220v and the 5v sections, by bigger distance at also a longated gap. He told me the term, but I can't remember it now... -
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@Sefi-Ninio - Yea I should. Im working on Rev 4 and there is more creepage both between primary (220) and secondary (5) and also internally in primary. Everything is ordered but nothing recieved yet, but let me give you a small peak:
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Looking good!
I see you went with the SMD path! did it allow for a smaller PCB?
Don't see how you handle the creepage though. -
Yes - smaller PCB.
Creepage is handled with:- Greater distance between components.
- Holes in PCB between components/parts that are close to each other.
Creepage distance is calculated here: http://creepage.com/
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Even though it's untested, would you mind publishing the Gerber and bom files?
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@Sefi-Ninio - Yea I should. Im working on Rev 4 and there is more creepage both between primary (220) and secondary (5) and also internally in primary. Everything is ordered but nothing recieved yet, but let me give you a small peak:
Very nice board !
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This post is deleted!
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SMD is easier with solder paste and hot air solder
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This PCB has been updated to Rev 4.1 with the following changes:
(Note that this thread contains the non SMD version)- Complete redesign of traces to improve size and stability.
- Nrf24l01+ now on the bottom side to make more room (with hope not RF disturbace from HLK or AC traces).
- Added silkmask with AC-DC seperation (Rev 4.1 > 5mm)
- AC clearance 2.5mm minimum
- Changed one AC trace from botton to top to increace creepage and changed milling
- MysX 2.3 + Analog IO
- Safety recommendations: This PCB meets the criteria of pollution level II (2,5mm (Basic) AC seperation and 5mm (Reinforced) AC-DC sepertion) and can be used "where only non-conductive contamination occurs. However, occasional temporary conductivity must be expected as a result of moisture condensation." Always use a sealed case to avoid contamination. Always read disclaimer.txt before using this PCB.
Images on https://www.openhardware.io/view/13/In-Wall-ACDC-Pcb-for-MySensors has been updated.
Please wait for PCB house to update to new gerber files before ordering (It should say M.Rev 2 (Manufacturer rev 2) for latest revision when selecting PCB house)
Im currently testing this rev...
If you want to be 100% sure, download and prev. revision. -
Hi,
Can someone please suggest replacement parts for the 110v variant of this board.
Thanks
Karthik@carthique - You need a 110 v varistor maybe something like: http://www.ebay.com/itm/321024816822?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT&rmvSB=true. Fuses and other components is the same.
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@sundberg84, when I go to the order form, the revision there is M.Rev3. Which version of PCB does that manufacturer revision correspond to - 3.1 or 4.1???
@ashway - this is correct/latest version. The manufacturer rev 3 equals the latest 4.1.
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Excuse the possibly silly question but the buy options is PCBs only? Or does it come with the housing too?
@shabba - PCB only.
I recommend using 3dhubs.com and find a local 3d printer for the case.
Files (.stl) attached in the project. -
@sundberg84 thanks - I had a look in the design files and I think I covered the comments but could not find a .stl file.
@shabba - sorry you are right.
If i remember right I removed it because I wasnt 100% sure it would be ok going from 4.0 to 4.1 on the pcb.
Let me have a look and post it asap. -
