Hi all, I am interested by Heltec HT-M01 LoRa concentrator board for €100 and have been reviewing the documentation from Heltec and @xgarb ’s blog. All the descriptions describe connecting the device to a Pi, either by SPI or USB. But I am interested to connect it (via USB) to a small server runnin…

Would this is be suitable? [41PeEDu-TpL]

Yes this is what I mean but we need to check that it’s actually compatible because it needs USB on the mini PCIe Header and I think USB is not available on the PCI bus. This card here for example has it through a separate connector: https://www.peak-system.com/PCIe-miniPCIe-Adapter.337.0.html?&L=1…

This one is cheap and should work: [image] SilverStone ECWA2-LITE interface cards/adapter Internal Mini PCIe,USB 2.0, Wi-Fi... Mini PCI-E to standard PCI-E x1 adapter card Support Mini PCI-E at 1.5V and 3.3V Support USB 2.0 signal (Wi-Fi & BT combo card) and one additional USB 2.0 port…

[image] Heltec HT-M01 LoRa concentrator board for €100 his one is cheap and should work Cool. Will the pigtails that come with that card be suitable for LoRa? i.e. is the impedance required the same as is used for WiFi? I understand impedance changes with frequency, and Lora uses a lower frequ…

I’m not sure what pigtails ship with this device, maybe the IPEX connector does not even fit. So if you want to be sure, just order a pigtail from our website with the device.

[image] Heltec HT-M01 LoRa concentrator board for €100 I’m not sure what pigtails ship with this device Are you referring to the PCIe adaptor card or the n-fuse card?

I mean the adaptor device. In the picture you can see that there are pigtails but I don’t know whether they fit.

Got it. So cost-wise, this solution, including the pigtail, antenna, PCIe adaptor, tax & shipping is similar to the Heltec device. It would be a slightly neater solution, being installed into my server case. What other advantages, if any, would the n-fuse card have over the Heltec USB device? Does…

Don’t buy this kind of PCI adapter. It adapts PCI lanes to MiniPCIe lanes only. n-fuse uses USB interface over the MiniPCIe pins. n-fuse is better quality than chisese Heltec. both are USB devices, both follow the same pico-gw reference design and can use the same software.

[image] Heltec HT-M01 LoRa concentrator board for €100 n-fuse uses USB interface over the MiniPCIe pins Thanks @nestorayuso . How can I identify PCI/PCIe adaptor with the required capability?

PCI/mini PCIe concentrator boards

Gateways

PaulRB2 (PaulRB) March 12, 2019, 4:27pm 12

Are you referring to the PCIe adaptor card or the n-fuse card?