Everything nRF52840
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So, 8dBm built-in, plus 20dBm PA, plus 12dBi for the feedhorn, plus 20dBi for the dish. Add the coded PHY on top of this. Does anybody want to set a record? =)
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In a meanwhile, here is
the nRF52840 range test with Johanson 2450AT18D0100 chip-antenna and SAFFB2G45MA0F0A 1dB attenuator
the nRF9160 range test: https://www.youtube.com/watch?v=p1_0OAlTcuY (spoiler - 14 km).@Mishka said in Everything nRF52840:
In a meanwhile, here is the nRF52840 range test with Johanson 2450AT18D0100 chip-antenna and SAFFB2G45MA0F0A 1dB attenuator: https://www.youtube.com/watch?v=p1_0OAlTcuY (spoiler - 14 km).
typo?? from the video, it seems to be nRF9160
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@Mishka said in Everything nRF52840:
In a meanwhile, here is the nRF52840 range test with Johanson 2450AT18D0100 chip-antenna and SAFFB2G45MA0F0A 1dB attenuator: https://www.youtube.com/watch?v=p1_0OAlTcuY (spoiler - 14 km).
typo?? from the video, it seems to be nRF9160
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@Mishka I meant nrf52840 does not do LTE/NB-IOT. 52840 is used as controller/bridge to bluetooth (14km range isn't for bluetooth). but yes their NB-IOT sip looks nice
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Adafruit now has an alpha release nRF52840 offering in a BBC microbit form factor:
https://www.adafruit.com/clue
The listing says it's programmable from the Arduino IDE.
The original micro:bit seems locked in time, with no official mcu upgrades from micro:bit itself, but nonetheless by the end of 2018 over two million micro:bits had been distributed globally. Pretty amazing for such a minimalist, barebones platform.
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Adafruit now has an alpha release nRF52840 offering in a BBC microbit form factor:
https://www.adafruit.com/clueThe listing says it's programmable from the Arduino IDE.
The original micro:bit seems locked in time, with no official mcu upgrades from micro:bit itself, but nonetheless by the end of 2018 over two million micro:bits had been distributed globally. Pretty amazing for such a minimalist, barebones platform.
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@NeverDie Ya Adafruit's Clue looks great. I just wish they would have added one more button to the front so up/down/select could be used for a menu system on the display.
@Jon-Raymond said in Everything nRF52840:
@NeverDie Ya Adafruit's Clue looks great. I just wish they would have added one more button to the front so up/down/select could be used for a menu system on the display.
Maybe you could program one of pads #0, #1, or #2 to be a capacitive touch equivalent of the extra button you wish it had?
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@Jon-Raymond said in Everything nRF52840:
@NeverDie Ya Adafruit's Clue looks great. I just wish they would have added one more button to the front so up/down/select could be used for a menu system on the display.
Maybe you could program one of pads #0, #1, or #2 to be a capacitive touch equivalent of the extra button you wish it had?
@NeverDie Yes that is a good option or use the accelerometer to sense an input.
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A datasheet for the new nRF5340 is now available: https://infocenter.nordicsemi.com/pdf/nRF5340_OPS_v0.5.1.pdf
It has some improvements, but some of its competition seems to be much lower power.
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Reading all of this, I think I made a mistake buying the e73-2G4M08S1C and a Deb board. I doubt I have the capabilities to solder this board properly. Since I have no experience designing boards, is there any simple breakout board design available I can order from pcbway so I can at least solder the outer pins?
The only board I found was this one:
https://www.openhardware.io/view/745/Light-and-shock-sensor-or-nRF52840-or-MySensors-or-ZigBee -
Reading all of this, I think I made a mistake buying the e73-2G4M08S1C and a Deb board. I doubt I have the capabilities to solder this board properly. Since I have no experience designing boards, is there any simple breakout board design available I can order from pcbway so I can at least solder the outer pins?
The only board I found was this one:
https://www.openhardware.io/view/745/Light-and-shock-sensor-or-nRF52840-or-MySensors-or-ZigBee -
@NeverDie doh! I glossed over that one and just assumed it wasn't possible for me due to the pads. Now on 2nd viewing I see that the inner pads are actually through holes, so I can solder them from the other side :-)
Thanks! Has anyone tried that one and has any tips? -
I would also be interested in hearing tips for this type of soldering (thru-hole to pads)
I tried the thru-hole method with the LGA pads on the back of an BT832. It wasn't very successful, I was only able to get one of the 5 holes in my pattern to connect. These look larger and more widely spaced, so it probably works better. -
I would also be interested in hearing tips for this type of soldering (thru-hole to pads)
I tried the thru-hole method with the LGA pads on the back of an BT832. It wasn't very successful, I was only able to get one of the 5 holes in my pattern to connect. These look larger and more widely spaced, so it probably works better.@nagelc Not sure, but here's a guess: maybe generously tinning some braided wire so as to wick up the solder, dipping it in lots of flux, and then feeding it through the hole? Then when you apply heat from a soldering iron hopefully enough of the wicked solder would melt onto the pad to make a connection.
However, I presume the better way would be to apply solder paste on the pads before sticking on the module and then reflow it in an oven.
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@nagelc Not sure, but here's a guess: maybe generously tinning some braided wire so as to wick up the solder, dipping it in lots of flux, and then feeding it through the hole? Then when you apply heat from a soldering iron hopefully enough of the wicked solder would melt onto the pad to make a connection.
However, I presume the better way would be to apply solder paste on the pads before sticking on the module and then reflow it in an oven.
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Hi everyone,
I'm a bit a newbie in hardware and need your help. I'm a PHD student and I actually work on ZigBee networks. For a POC, I need to have an hardware device able to capture and send ZigBee messages from a "true" physical device. (An old philips Hue or maybe an Ikea smartbulb for example - normally, 2.4GHz).
The idea is to make a false ZigBee Gateway to work on the secrurity of the enrolment in ZigBee 3.0 within software.
My issue is that I'm unfortunately a bit newbie in on-board programming and thus can't be sure if it's feasible and if it's really complicated or not. I'm posting my message here because the nrf52840 seems to fit my needs with a ZigBee compatibilty.
Thanks by advance for your answers ! -
hello @TruiteCendrée :grin:
yes this is possible with nrf52840, but unfortunately zigbee is not compatible with mysensors. Mysensors is a software stack like zigbee is.
I think you'll get more infos if you take a look on nordic semi forums. They have a zigbee stack for nrf52840.
