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To connect raspberry pi 3 with RS232 module
Posted: Wed Sep 27, 2017 9:58 am
by connectororconductor
Hi, I have a RS232 to TTL Serial Interface Module, I would like to know the steps to connect it to raspberry pi 3. Are there any instructables or series of steps to connect these two.
Re: To connect raspberry pi 3 with RS232 module
Posted: Wed Sep 27, 2017 12:32 pm
by drgeoff
If it is genuinely a "TTL" one then it uses 5 volt logic levels and should not be connected to a RPi as the GPIOs on RPis use 3.3 volt logic levels. RPi GPIO inputs are not 5 volt tolerant and fatality of the complete RPi can result.
Some modules do use 3.3 volt levels.
Re: To connect raspberry pi 3 with RS232 module
Posted: Wed Sep 27, 2017 12:48 pm
by klricks
connectororconductor wrote: ↑Wed Sep 27, 2017 9:58 am
Hi, I have a RS232 to TTL Serial Interface Module, I would like to know the steps to connect it to raspberry pi 3. Are there any instructables or series of steps to connect these two.
Make sure the chip on the module is MAX3232 and not MAX232. If MAX232 then you will need to add a level shifter circuit between.
Give a link to your module specifications.