Electronics > Projects, Designs, and Technical Stuff
SIM900 alternative
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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