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What is the difference between arduino uno and arduino smd?


Asked by Karla Chandler on Nov 29, 2021 Arduino



The builtin LED is marked L on the PCB. In the picture of the Arduino UNO you see a large chip. This is the AVR-chip, the heart of the Arduino. You might see a smaller chip in the center of your Arduino. This is the SMD variant of the chip.
Also Know,
The Arduino Uno SMD is a version of the Arduino Uno, but uses an surface mount version of the Atmega328P instead of the through-hole version. This version was made in response to a shortage in supply of the through-hole Atmega328P. The board is based on the ATmega328 ( datasheet ).
Furthermore, As their names state, the Uno SMD has a SMD microcontroler while the UNO R3 (the "normal" one) has a DIP version of the microcontroleur. I don't think there is any other difference.
In respect to this,
There are two versions of Arduino UNO currently available: The difference between the two is just physical and lays on the AVR chip package used.
Accordingly,
SMD vs PTH. The Arduino Uno comes in two forms: surface mount (SMD) and through-hole (PTH). Both versions are very similar, the only significant difference comes from what package the ATmega328 processor comes in.