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Topic: Arduino Uno Rev3 pinouts photo (Read 251939 times) previous topic - next topic

cysign

Would you guys use an 8u2 or an 16u2 for own PCBs?
And why?

testato

It have usb inside, this is the most important difference respect 328.
It have also 2,5kB of ram, instead of 2kB
- [Guida] IDE - http://goo.gl/ln6glr
- [Lib] ST7032i LCD I2C - http://goo.gl/GNojT6
- [Lib] PCF8574+HD44780 LCD I2C - http://goo.gl/r7CstH

westfw

Quote
Would you guys use an 8u2 or an 16u2 for own PCBs?
No.  At the time Arduino switched to the 8u2, FTDI usb/serial chips were relatively expensive.  Since that time, FTDI has come out with a cheaper line of USB chips, competition has appeared in the form of Cypress, WCH, and low-priced "modules", and the AVRs have gotten more expensive.   On top of that, there are more chips with native USB (like the 32u4 used on Leonardo and Micro, or the SAMD21 on Zero)   The 8u2 change to Arduino allowed the older design to have new USB capabilities, but those usually aren't needed.  When they are needed, there are better solutions...


GolamMostafa

That mounting hole on the top left side was already hard to use and this time with the two additional pins it should be impossible to use now.
That mounting hole on the top left side was already hard to use and this time with the two additional pins it should be impossible to use now.
I would like to see redundant connectors (double connectors for DPin, APin and PPin Connectors) in the future manufacture of the ArduinoUNO Kits.

GolamMostafa

I am attaching a schematic diagram for ArduinoUNO board which I have made for myself, and it may be useful for others!

SebastianCeronV

How can I connect high voltage to an arduino?

westfw

Quote
How can I connect high voltage to an arduino?
Opto-isolators...

KhaibariA

I am about to make my graduation project. I want to know how to connect fan and also I face difficulties having the circuit diagrm for

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