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can I connect A8S to Touchscreen by TTL Serial connection

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can I connect A8S to Touchscreen by TTL Serial connection
Ksirirux Offline
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#1
Photo  07-24-2023, 01:47 AM
How can I connect A8s to Touchscreen pass TTL Serial ? 
Please suggest....


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admin Offline
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#2
07-24-2023, 02:59 AM
A8S no free gpio for use serial port, unless you can use RS485->serial TTL converter module.
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Ksirirux Offline
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#3
07-24-2023, 03:42 AM
(07-24-2023, 02:59 AM)admin Wrote: A8S no free gpio for use serial port, unless you can use RS485->serial TTL converter modu


May I use tx rx for gsm module to connect  is it possible?
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#4
07-24-2023, 03:48 AM
sure, but the level is 3.3v, your LCD maybe need 5v TTL level, you can try to test.
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