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SIM900 alternative

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FreddieChopin:
Then maybe you could use USB-OTG host library and use LTE modem? They are very very fast.

hussamaldean:

--- Quote from: FreddieChopin on September 10, 2019, 08:13:14 pm ---Then maybe you could use USB-OTG host library and use LTE modem? They are very very fast.

--- End quote ---
could you please elaborate ?

mikerj:

--- Quote from: hussamaldean on September 10, 2019, 05:45:57 pm ---
--- Quote from: mikerj on September 10, 2019, 05:15:46 pm ---I think you will be disappointed, GPRS is just slow with a maximum throughput of only 85.6 kbps for the SIM900 module.  If you are running the USART at 115.2 kbs you shouldn't have a bottleneck.

--- End quote ---
I tried to send the command without any delay and the results are the SIM didn't even start the HTTP connection

--- End quote ---

That doesn't sound like it's the fault of the UART.  Does your carrier even support GPRS, many do not?

A 4G USB dingle is cheap and very fast, but driving it from a microcontroller is much harder and requires one with USB OTG.  Could you maybe use something like a Raspberry Pi?

hussamaldean:

--- Quote from: mikerj on September 13, 2019, 07:10:14 am ---
--- Quote from: hussamaldean on September 10, 2019, 05:45:57 pm ---
--- Quote from: mikerj on September 10, 2019, 05:15:46 pm ---I think you will be disappointed, GPRS is just slow with a maximum throughput of only 85.6 kbps for the SIM900 module.  If you are running the USART at 115.2 kbs you shouldn't have a bottleneck.

--- End quote ---
I tried to send the command without any delay and the results are the SIM didn't even start the HTTP connection

--- End quote ---

That doesn't sound like it's the fault of the UART.  Does your carrier even support GPRS, many do not?

A 4G USB dingle is cheap and very fast, but driving it from a microcontroller is much harder and requires one with USB OTG.  Could you maybe use something like a Raspberry Pi?

--- End quote ---
great solution but we don't have 4G in Iraq
 ;D ;D ;D

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