💬 Easy/Newbie PCB (RFM69 HW/W edition) for MySensors
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How's the compatability 5 V arduino and RFM69 achieved? As I understand the RFM69 inputs are not 5 V tolerable.
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Correct - 3.3v only - im redesigning the PCB for this.
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Ok, so it was just a copy-paste leftover in the feature description from the nrf version.
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Ok, so it was just a copy-paste leftover in the feature description from the nrf version.
@martinhjelmare - It wasnt meant to make the project visible but I did unfortunately. I will correct as soon as possible
I dont think its going to be that newbie friendly with a level converter for 5v so Im going to propose a 3.3v Pro mini only. Then I might add a voltage regulator with 5 and 3.3v in. -
Well, since I posted the thread without it was finished (not usually my way of working) I can keep you updated on the work i guess... get input on the way.
New schematics made... not final! Not implemented any booster yet.
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@gohan - looking better on that SMA connector...
Anyone knows if its possible to have a SMA and Hole for DIY antenna on the same PCB like this?
Edit:
Well, so far tonight... a couple of hours work and im happy :) some small stuff to fix before production.
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OK - beta release.
I have updated the description, bom, gerber files and kicad files on openhardware.io.
I have placed an order for fast delivery on pcbway.com but it will take some time before my RFM69 radios reach me from china-land. So I won't be able to test it for some time.IF you are curoius (and willing to debug and cut / resolder if there are errors) feel free to download the gerbers and place an order. I cant promise its 100% (or work as intended) and because of that I wont add them for sale on openhardware.io yet.
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@gohan - looking better on that SMA connector...
Anyone knows if its possible to have a SMA and Hole for DIY antenna on the same PCB like this?
Edit:
Well, so far tonight... a couple of hours work and im happy :) some small stuff to fix before production.
@sundberg84 I did this in my take of a SMA with a wire Antenna option:
, you can see more details here https://www.openhardware.io/view/388/RFM69HW-Arduino-Mini-Pro-Shield.
Haven't tried with the wire antenna trough. -
@sundberg84 I did this in my take of a SMA with a wire Antenna option:
, you can see more details here https://www.openhardware.io/view/388/RFM69HW-Arduino-Mini-Pro-Shield.
Haven't tried with the wire antenna trough. -
This post is deleted!
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So, this temporary GW is now connected to Domoticz and running at 34800 baud rate (had some problems to figure this out...) I have one (fake) node connected but still have some range issues to sort out. Most likley because of the DIY antenna...
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I now have a gw and node working together on 3.3v and 433mhz (not HW version). I would say its quite safe to order the PCB if someone wants to try it out.
Note to myself and others... the RFM69 is really sensitive to high power. I fried one because I tried it on a Nano which i think is using 5v on its gpio. I was just thinking... hmm 3.3v - nano got one of those!
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And now I also have a batterynode working... Power consumtion will come later... it works atleast :)
Someone that can guess what kind of power consumtion this setup would be (removing LED / regulator)?
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I now have a gw and node working together on 3.3v and 433mhz (not HW version). I would say its quite safe to order the PCB if someone wants to try it out.
Note to myself and others... the RFM69 is really sensitive to high power. I fried one because I tried it on a Nano which i think is using 5v on its gpio. I was just thinking... hmm 3.3v - nano got one of those!
@sundberg84 said in 💬 Easy/Newbie PCB (RFM69 HW/W edition) for MySensors:
I now have a gw and node working together on 3.3v and 433mhz (not HW version). I would say its quite safe to order the PCB if someone wants to try it out.
Note to myself and others... the RFM69 is really sensitive to high power. I fried one because I tried it on a Nano which i think is using 5v on its gpio. I was just thinking... hmm 3.3v - nano got one of those!
It's in datasheet that it is not 5v tolerant and absolute max voltage it's like 3.6v
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@sundberg84 said in 💬 Easy/Newbie PCB (RFM69 HW/W edition) for MySensors:
I now have a gw and node working together on 3.3v and 433mhz (not HW version). I would say its quite safe to order the PCB if someone wants to try it out.
Note to myself and others... the RFM69 is really sensitive to high power. I fried one because I tried it on a Nano which i think is using 5v on its gpio. I was just thinking... hmm 3.3v - nano got one of those!
It's in datasheet that it is not 5v tolerant and absolute max voltage it's like 3.6v
@gohan - I was fooled by that the Nano got a 3.3v output... stupid.
