EcoRenovator - View Single Post - Designing a General Purpose Heat Pump Controller

NiHaoMike · 07-14-14, 08:13 PM

The classic Arduino only has one UART. That's enough for a very basic controller, but it seems like you wanted two independent RS485 ports. You'll want a Mega or Due for that. Actually, you'll want more GPIOs than the classic Arduino provides if you want to avoid using port expanders, which can be confusing for a beginner.

07-14-14, 08:13 PM	#115
NiHaoMike Supreme EcoRenovator Join Date: Oct 2008 Location: Austin, TX Posts: 1,154 Thanks: 14 Thanked 257 Times in 241 Posts	The classic Arduino only has one UART. That's enough for a very basic controller, but it seems like you wanted two independent RS485 ports. You'll want a Mega or Due for that. Actually, you'll want more GPIOs than the classic Arduino provides if you want to avoid using port expanders, which can be confusing for a beginner. __________________ To my surprise, shortly after Naomi Wu gave me a bit of fame for making good use of solar power, Allie Moore got really jealous of her...