C001 doesn't connect anymore

Hardware
1

The C001 breakout board works fine. The sudden imp disconnected and don’t connect anymore.
BlinkUp again doesn’t help.
Status LED just blinking red-orange.
LTE (Telia) network is okay, according to iPhone.
Any ideas? Don’t want to believe that imp is gone…

2

PM with your device ID and we’ll look?

3

Thanks, Hugo!
Now it works again!

4

Errr, I hadn’t actually got to looking at your device, as the ID only arrived last night! I’ll see if the black box had anything in it when it came back online though.

5

I can see you’re connected on 2G, not LTE; this requires higher current supply. I can see indications that maybe you have power issues (modem dropping off USB) - do you have a battery attached to the board, or just the USB supply?

6

I have powered it from “traditional” 230Vmain to 5V power supply, 2A is a nominal current.
Besides - I try different power supplies.
Why it is connected to 2G - I don’t know.

7

I use the following lines of code and I still get server.log:
local cellData = split(cellinfo, “,”);
local ACT = cellData[0];
if (ACT == “4G”) {
local rssi = "4G; " + cellData[12];
sendData.rssi <- rssi; // to send RSSI un simple webpage
server.log("Reference Signal Received Power: " + cellData[12]);
}

8

It was on LTE at 2019-12-04 09:25:17Z, but went back to 2G afterwards.

When it’s on 2G, having a battery present is recommended with the breakout.

10

…that’s for an imp006 though; the same approach isn’t possible with the impC001 breakout.