The hard RAK831 cafe part 1

Does RAK831 support LBT mode?

I’ve found that, more than the power supply, it’s the cord that make RPi-based installation fails. Most of the time they’re only rated for USB, i.e. 5V +/- 10% @ 500mA. If you draw 2.5A you may have only have 2.5V at the end of the cord…

That, and the USB connectors are only rated for 500mA in most cases…

Workaround: cut the cord as close to the wall wart as possible, and replace it with sturdier wires. Also, avoid using the USB power connector on the RPi, and plug it right into the 5V pin (note that by doing so you will bypass a polyfuse).

Be careful with RPi and I2C… the silicon can’t handle repeated start nor clock-stretching.
You have to use GPIO pins and some bit-banging-library to get this working on the Pi.

http://www.advamation.com/knowhow/raspberrypi/rpi-i2c-bug.html

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I see Stretch Light has popped up on this thread in a couple of places. Any reasons why I shouldn’t use Stretch Light if I was to bake a couple of SD cards this morning?

TIA

Garry

I ordered the RAK with RPi couple of hours ago and stuff usually takes 2-3 weeks till it arrives, but I’d like to hit the ground running, thus…

I’m located in Oz = ISM 915MHz

I’ve seen 2-3 questions in regards to that frequency and the RAK.
Has anyone got it working on that frequency yet?

Thx for sharing!

no it doesn’t.

Contact the manufacturer? the feedback regards their support for hardware seems to be good so far

Edit: what are your concerns about 915mhz? you ordered the right model I take it :slight_smile: the new TTN packet forwarder picks up your config from the backend - cant see you should have any issues out of the box?

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It’s just that a couple of people who seem to have them did ask as they didn’t get it working, so I was just wondering if that had been solved already :wink:

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Just FYI - I now have my RAK831 connected to a NanoPi Neo running the go-version of TTN packet-forwarder. xenial and go version 1.9. RAK831 reset is connected to PG11 on the Neo. Power is provide by 12V PSU into LM2596 DC-DC converter See below a pic:

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My Board is now finally available! https://www.tindie.com/products/kilobyte/rak831-raspberry-pi-breakoutbackplane/

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I drop this here in case someone else needs it, as the dwg file was missing the connector location - so I made one that states them as they appear in that file:

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4 posts were merged into an existing topic: The WORKBENCH

For comparison, RHF0M301 draws 1.66 watts when idle / RX. (At 5.34V, 0.31A) Very nice the RAK831 draws about 1.03 watts when idle / RX!

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Hi James… nice info.
That picture is from RAK … I will measure it myself also :wink:

tnx Jac. … it seems alive

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looks good

whats your aerial setup? aerial type/cable type/cable length/inline adapters?

@ the moment a typical indoor GP living room set up :sunglasses:
Yes I think a GP will give a better result (indoor/outdoor) then the supplied antenna … but I use the GP only for testing, I have an outdoor antenna.

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would you get the same distance from the RAK supplied aerial? :slight_smile:

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Do you know which lora gateway board support LBT?