# Communication with HL6528RD 2.8V using Uart1

**URL:** <https://mangoh.discourse.group/t/communication-with-hl6528rd-2-8v-using-uart1/436>\
**Category:** mangOH Green\
**Created:** [March 16, 2017, 9:46am UTC](https://mangoh.discourse.group/t/communication-with-hl6528rd-2-8v-using-uart1/436 "2017-03-16T09:46:05Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![kelpet](https://avatars.discourse-cdn.com/v4/letter/k/e68b1a/32.png) [@kelpet](https://mangoh.discourse.group/u/kelpet)\
**Post date:** [March 16, 2017, 9:46am UTC](https://mangoh.discourse.group/t/communication-with-hl6528rd-2-8v-using-uart1/436/1 "2017-03-16T09:46:05Z")

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Hi,

I would like to use mangoh green with HL6528RD 2.8V, please help me to make a basic settings.  
Which CF3 slot to use, how to set the pins to use UART for controlling the module?

Thank you for your help  
Peter