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Read our last post: Modems and RaspberryPI 5. RaspberryPI OS [Debian 12 bookworm] notes.. Order u-GSM modems.

gsm and 3G shields tutorial :: c-uGSM & d-u3G how to start tutorial - part 2


 

SOLDERING THE "POWERING, SERIAL AND CONTROL INTERFACE" PINHEADER and the BATTERY CONNECTOR

What u need for this step.

c-uGSM d-u3G shield PINHEADERS AND CONNECTORS SOLDERING - what you will need

 

Solder the "POWERING, SERIAL AND CONTROL INTERFACE" connector.

c-uGSM d-u3G shield POWERING and CONTROL INTERFACE CONNECTOR SOLDERING
You can use straight or 90 degree 0.1" (2.54mm) pinheaders. Also, there are two option for mounting: horizontal and vertical mounting. Above it is presented the horizontal option.

DO NOT FORGET: c-uGSM use 12xheader and d-u3G 13xheader.

 

Solder the LiPOL BATTERY connector (only if you intend to use the shield with LiPOL).

c-uGSM d-u3G shield LiPOL BATTERY CONNECTOR SOLDERING
Above are presented the horizontal and vertical mounting option for the JST connector. Also, there is an other option: two option for mounting: just solder the LiPOL battery wires on the corespondent PCB pads.

WARNING:
BE VERY CAREFUL AT LiPOL BATTERY POLARITY and/or SHORT-CIRCUITED. TAKE IT SERIOUSLY! You may ask for proffesional assistance!

DO NOT FORGET:
Use (as) low (as possible) power soldering tools.
After each soldering procedure, double check for short-circuites and cold(false) soldering contacts.

 

 

 

 

 

Dragos Iosub & itbrainpower.net team original how to.

 

 

 

 

document version 1.011 / 2015-10-27 © R&D Software Solutions srl