Ill be testing with a neo-6 GPS module soon link. LoRa will be used to send the coordinates. (we will also try something like Geo-LoRa or trilateration with LoRa, but don't expect the accuracy to be anywhere near that of GNSS solutions). The metal is probably going to block the signal in your case, but ill let you know how sensitive it is.

Hi @jasonriedy There's nothing in the way of tooling at the moment but I'll have a chat with the team to see about putting out a benchmark script to verify power efficiency. Will let you know when I've heard back!

@farshadfirouzi Cat M1 has a much higher bandwidth and no duty cycle restrictions as it operates in a private band so I think it should work, but of course you'll pay a subscription to your carrier. Also the peak current consumption should be higher than LoRa so that's something to keep in mind if powering from batteries. If you really have an application using 10,000 nodes and consuming 40GB a day I can imagine Verizon would want to talk to you but really I can't say anything about that. Here in the UK it would definitely open some doors. You will need to work with your carrier to supply a base station because, unlike LoRa, they own the frequency spectrum.

Hi @smssms You could try a 2000 mAh LiPo Battery - https://shop.pimoroni.com/products/lipo-battery-pack I'm sure you can find these cheaper/closer to where you are located but I know these work well as I've used them before from this specific supplier.

Yes it did work, Thank you very much for your help.

@bucknall Thanks for getting back to me. I downloaded an exe file. It installed a large number of files, but didn't provide any messaging on what I needed to do next. There wasn't an executable in what was installed apart from the python.exe. I was hoping for a batch file that wrapped up a command line, or even an exe that launched the tool. Having worked out how to launch it, I must say I am impressed with the upgrade tool. It worked very smoothly and it is better than other ESP flashers I have encountered.

@jmarcelino Thank you for your fast and precise answer! Looking forward to get one of your boards to play with - C or not C :).

Seems a lot of new deep sleep modes have been added to ESP-IDF http://esp-idf.readthedocs.io/en/latest/api/system/deep_sleep.html as a fantastic example: https://github.com/espressif/esp-idf/blob/4745895e229d8e1ca4e6f4b601397c0ba0b3d2db/examples/system/deep_sleep/README.md The following wake up sources are configured: Timer: wake up the chip in 20 seconds EXT1: wake up the chip if any of the two buttons are pressed (GPIO25, GPIO26) Touch: wake up the chip if any of the touch pads are pressed (GPIO32, GPIO33) ULP: wake up when the chip temperature changes by more than ~5 degrees Celsius (this value hasn't been characterized exactly yet). Can't wait to see this in μPython :-)

@DongYin said in How to take the file 'ca.pem' to ‘/flash/cert/’?: By the way ,how to add my code with black backcolor? look here http://commonmark.org/help/

@livius Ah, I understand what you mean. Don't know this either... But I think it is indeed for WiPy 1.0 On this image it says GP16 is MOSI. I found the image according to this forum post.

@mkharibalaji that callback is not yet available, but it's planned to have it implemented.

Just thinking - if you would use helical or PCB antenna you could probably put coating onto it as well.

@omesa if you can catch this adv message then you can simple redirect it by wifi what problem you have encountered?

Hi, Could you please post your suggestions as a GitHub issue? Thanks

@livius I think I've not privileges to upload the file.