DROK SIM800 GSM GPRS

[Stefano August 14, 2017 at 12:47 pm Post count: 0]

#20532 Reply |

Hello, I bought the GSM module on Amazon.

I hoped to find any documents, schematics or whatsoever in Your website but I’m not able to find absolutely anything even if the search has been extended to web.

Could You kindly tell me where I could find anything specific for Your module board?

Thank You in advance foe any suggestion and awaiting for it, I remain.

Best Regards,

Stefano

[DrokKeymaster August 15, 2017 at 8:17 am Post count: 2971]

#20556 Reply |

Hello Stefano,
Thanks for writing in.
Since ther are two kinds of similar product, we can’t ensure which one you are taling about.
Is it #200222 or #200221?
200222
200221
Best regards.

[Marco August 15, 2017 at 12:49 pm Post count: 0]

#20564 Reply |

Hi There,

I’ve just purchased the 200221 module board from Amazon.it and would appreciate a quick hint for wiring the device to Arduino and Raspberry Pi GPIO.

The kit includes 4 wires and one JUMPER, and searching Amazon reviews it looks like:

– GND to Arduino GND
– RXD to Arduino TX
– TXD to Arduino RX
– VCMU (=VDD in your leaflet) to Arduino +5V for matching Arduino TTL Voltage Level

Please confirm.

Also, the VIN (power input) pin can be fed with 5V power from Arduino: please confirm.

If affirmative, can the JUMPER be used for shorting 1 of 2 VIN pins with 1 of 2 VCMU pins, in order to have only one 5V wire from Arduino feeding both VIN and VCMU on the GSM board?

Regarding Raspebrry Pi wiring, can be VIN connected to external 5V supply while VCMU is wired to the PI 3.3V pin in order to match PI input level? Would this work?

Thank you in advance for your support

BR

Marco

 

[DrokKeymaster August 18, 2017 at 9:45 am Post count: 2971]

#20675 Reply |

Hello Marco,
Thanks for writing in.
Yes, what you said is right,But we need to correct one point.It is VMCU instead of VCMU.
– VMCU to Arduino +5V
Best regards.

[Marco August 18, 2017 at 11:00 am Post count: 0]

#20677 Reply |

Thank you very much for both confirmations: the VIN+VMCU jumper trick on Arduino but also the Raspberry +3.3 VMCU wiring is quite important for an improved use on the Pi

[Stefano August 19, 2017 at 12:48 pm Post count: 0]

#20729 Reply |

Hi, thanks for the answer.

I bought the #200221.

The leaflet has very very few details, so any other informations such as schematics and so on would be appreciated.

Thanks in advance.

Regards,

Stefano

[DrokKeymaster August 24, 2017 at 3:14 am Post count: 2971]

#20951 Reply |

Hello Stefano,
Sorry to keep you waiting.
Here is an instruction for your reference. Hope it can help you.
200221
Best regards.

[Stefano August 24, 2017 at 6:54 am Post count: 0]

#20959 Reply |

Hello,
thank You for the document.

Unfortunately it’s the same as attached to the item I bought.
My hope is to find schematics and so on.

Anyway, it seems very strange that leaflet is the only document available about that board.

Thanks and regards,

Stefano

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