💬 In Wall AC/DC Pcb for MySensors
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Hi @sundberg84, really appreciate the quick reply!
Thanks for the explanation - I'll check Itead out.
Regarding the safety - I completely understand, but after reading all the 360+ posts in the thread, I gained confidence both in the HLK-PM01 as well as the general circuitry when using the fuses and varistor. I'm not electrical engineer as well, and learning as I go/read.Thanks again for the contribution, waiting for the 4th rev. ! :)
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Great, I will try to release it tonight or tomorrow :)
Yea, i have a great confidence in the HLK as well, its my PCB and the AC traces i have learned more about and need to update.
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Hi,
thanks for your great work..
great to have chosed a pwm output for the relay (ssr can be used as a dimmer)
but is it possible to add a fuse on the ssr output too ?thanks
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Hi @vil1driver!
This pcb does not contain any relay. -
roh sry :D bad thread lol, i was think it was the http://forum.mysensors.org/topic/1540/110v-230v-ac-to-mysensors-pcb-board/72
too much windows opened =)
I can delete it if needed
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Ok - updated to 3.1. Its mainly changes on the AC side to decrease risk of creepage and increase clearance.
See changes.txt for more detailed info.
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Playtime...
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Sweeet!!!!
Say @sundberg84, have you considered also adding one or two relays to the mix?
I know it'll probably increase it's size footprint but in terms for height, if you position them next to the HLK unit then there shouldn't be a noticeable height increase. SSRs are very small. -
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.
