nRF5 action!
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Really? So something like:
- Upload gateway sketch to it (how?)
- Select "serial connection" in Domoticz?
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i don't think you need extraordinary soldering skills, pads on bottom looks easy ;) (pretty sure these are the programming pads)
The right question, imho, would be: can you expect from this dongle the range you would expect from a gateway ?? regarding chip antenna performance and maybe its gnd counterpoise..
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i don't think you need extraordinary soldering skills, pads on bottom looks easy ;) (pretty sure these are the programming pads)
The right question, imho, would be: can you expect from this dongle the range you would expect from a gateway ?? regarding chip antenna performance and maybe its gnd counterpoise..
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@Toyman yep, this confirms what i said, not difficult to access.
I didn't read the description..just looking at the pcb layout was enough to tell me poor rf range + no basic usb spec design rules (latter point is maybe not the most critical for most of people, but it just shows 1) designer wasn't aware ?? 2) this is what you get for cheap money, whereas missing parts would have cost few cents..).
Just saying, because maybe this dongle can work well enough for some people. -
@Toyman yep, this confirms what i said, not difficult to access.
I didn't read the description..just looking at the pcb layout was enough to tell me poor rf range + no basic usb spec design rules (latter point is maybe not the most critical for most of people, but it just shows 1) designer wasn't aware ?? 2) this is what you get for cheap money, whereas missing parts would have cost few cents..).
Just saying, because maybe this dongle can work well enough for some people. -
Looks as though there is also a new DK for the nRF52840 as well:
https://www.digikey.com/product-detail/en/nordic-semiconductor-asa/NRF52840-DK/1490-1072-ND/8593726
just not in stock.Looks like HolyIOT is ahead of the curve on this chip.
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@jokgi said in nRF5 action!:
@neverdie I would suggest holding off on purchasing a new nRF52840-PDK until the final silicon is released.
Oh! It's still not?
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i don't think you need extraordinary soldering skills, pads on bottom looks easy ;) (pretty sure these are the programming pads)
The right question, imho, would be: can you expect from this dongle the range you would expect from a gateway ?? regarding chip antenna performance and maybe its gnd counterpoise..
@scalz
I would be interested in any range testing in regard to this dongle. For ground it has whatever it is that it is plugged into. (PC, SBC, USB extention cable, etc) There will be a nRF52840 based dongle out soon. See picture above. This dongle will need to be programed over the SWD lines. No Segger on board this one..! -
@Nca78
Getting rid of the ground plains around the entire module hugely improved the range. Had to stap back to AAA batteries to fit on the board. But I'm happy with the way it's going (AA is still possible but not soldered on it just doesn't fit enough in the wall socket) -
Very nice. Looks professional!
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@toyman said in nRF5 action!:
Very nice indeed. I thought ground plains improve the range
He's talking about the ground plane around the nrf5 module, not on the full board ;)
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@toyman said in nRF5 action!:
@neverdie said in nRF5 action!:
I didn't have good enough technique dispensing manually directly from a solder paste syringe,
what did you have issues with?
It was very hard to extrude it, so I always seemed to either underextrude or overstrude. I found it very hard to get the right amount exactly where it should go by just manually pressing the plunger on the solder paste syringe that the material came in.
What about moving the PID-related discussion to a dedicated thread as this one is already excessively long and useful information will get lost soon ?
@neverdie said in nRF5 action!:
It was very hard to extrude it, so I always seemed to either underextrude or overstrude. I found it very hard to get the right amount exactly where it should go by just manually pressing the plunger on the solder paste syringe that the material came in.
Yes I had the same problem too... added with too old solder paste from my local shop :(
I just ordered a stencil together with my test PCB, I guess it's the way to go given the now very low prices of stencils (mini-stencils at 9.9$ at Seeed and I just paid 7$ + 2$ PCB at JLCPCB, same company than EasyEDA). -
@gohan said in nRF5 action!:
I think we should open a dedicated thread about smd
We had the same idea at the same time.
I moved the related posts here => https://forum.mysensors.org/topic/9412/smd-reflow-oven-pidNot sure the title is the best, feel free to suggest a better one in the other thread :)
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Hello guys. Finally I've got some nrf51288 boards, like used here: https://www.openhardware.io/view/510/Button-cell-Temperature-Humidity-sensor I've hooked it up to ST Link, uploaded test sketch and everything worked fine. Then I tried to put it to sleep and measure power consumption. The best number I'm getting is 550uA... And it seems like something is completely wrong with this. Either my readings, or some bug in new version of Mysensors library or nrf5 arduino core.
To be sure it's not particular chip's bug I've checked both I've got, no differences. I've also checked current on stock BLE firmware from manufacturer it was running when they came. It was around 120uA - 200uA while presenting via bluetooth. So I guess it can't be that my readings are completely wrong. But then how can it be that bluetooth presenting consume less current than sleeping?
For now I couldn't find a solution or any hint for this, so I apologize If I am missing something, but I need help.EDIT: I might just delete this post, but maybe someone will search for the same solution. Long story short 600uA extra is due to the lack of low frequency crystal onboard. It makes HFCLK to not shutdown and draws current during a sleep. I knew, that synth RTC will take more current but I didn't expect it to be that much.
Another question is why sleep that depends on pin change and seems doesn't require RTC consumes 1ma? I'm confused...
