[App_rpt-users] URI GPIO

[Bryan Fields]

On 6/3/18 11:42 PM, Scott Weis wrote:
> Isn’t the URI 5v logic?

GPIO on the chip is not, as the core runs at 3.3v.

You'll need a simple logic converter.  If you want a ready made one:
https://www.amazon.com/dp/B0148BLZGE/ref=cm_sw_r_cp_ep_dp_gbB2zbJRTFMKV

A FET and couple resistors will work too, you don't need to switch at anything
approaching a data rate.

I have some details on this here as part of interfacing a quantar to allstar.
http://wiki.w9cr.net/index.php/Allstar_and_P25_on_Quantar



-- 
Bryan Fields

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http://bryanfields.net