T-SIM7600G-H R2 questions
Hi all and @zhang-LILYGO
Im currently looking into the T-SIM7600G-H R2 board and have a few questions:
- Does that board need a manual reset if the battery is empty but the solar panel fully recharges the battery? Assume that board operates remotely - i cannot go there and press a reset button...
- Can I use a different battery than a 18650? I would like to connect this one instead: https://www.adafruit.com/product/353 - this one has more mAh than a standard 18650 battery... - if not what needs to change to make it work?
- I plan to connect the following solar cell - would that be ok with the battery above? https://www.adafruit.com/product/3809 - any problem you see with this one - too slow charing?
- How many mA does the board use when its powered on and not in sleep mode?
- What nano sim do you suggest to get - any provider is good for LTE and GSM in the US? I also plan to use it in Europe...
- Is there a way to connect a video camera to that board and use it for live streaming? what about the waveshare OV5640 Camera Board? anything else better?
- Is there a way to provide support for doing voice calls in future - or why is that feature currently not available? Any future plans for adding that feature when you release a new board?
- Is there a waterproof antenna i can use? I think the one which is included with that board is not waterproof?
- Im also looking for a case/box to protect the board from water and sun/heat - any recommendation?
@gerald10 Nice question I would like an official anwer on the point #1, I would like to deplot SIM7000G to the field also, wondering to know the same, the old T-call sim800 needs to be reset sometima being not the best for unattended situations.
i have the A7608 board, which is quite similar to what you have.
- I do not know, but it would be best to implement some logic where if the battery is below a threshold you keep deep sleeping.
- That battery also costs a lot of money. You might want to first try a standard 18650, e.g. with 2-3 Ah and see how it goes. Connecting to wifi every 15 minutes and using proper deep sleep gives me a month of battery time without any charge.
- I think the open circuit voltage of that panel is to high. The board has a CN3065 charging chip (search the datasheet online), and accept up to 6.5V max. Search a "5V" solar panel. Again, I do not know the specifics of your application, but a 1w solar panel can do miracles in many applications.
- this will depend on the cpu frequency you set for the esp32. At 240MHz, my board sucks 40 mA, but at 40 or 80 MHz you can go down to 10 mA. For battery powered applications you need to learn to deep sleep as much as possible.
- not sure
- not sure, but I would suspect live streaming 24/7 requires a different thinking for the power system
- not sure
- the antenna can stay in the enclosure you use for the board
- i use standard abs or polycarbonate enclosure boxes. There are tons of models available for ~10$