Logic voltage first, then pins, then the wireless it really has · review
The classic Arduino Nano in a compact shape, with an ATmega328P, 14 digital and 8 analog pins and a mini-USB port.
Same chip, smaller shape.
Mini-USB is old.
About $26 at our reading.
Prices quoted in this text are dated readings and can differ from the live price in the buy box.
| MCU | ATmega328P |
|---|---|
| I/O | 14 digital, 8 analog |
| USB | Mini-USB |
| Size | Breadboard friendly |
| Amazon ASIN | B0097AU5OU |
The title says 22 digital pins; the bullets say 14 digital and 8 analog.
Mini-USB.
8.3/ 10
Good, but the Nano ESP32 costs less at our reading.
workshop machines from the same category, at nearby prices. Only what all of them publish is shown: a column with holes compares nothing.
| Model | Price | MCU |
|---|---|---|
| Arduino Nano A000005 | $26 | ATmega328P |
| Arduino UNO R4 WiFi | $28 | Renesas RA4M1 + ESP32-S3 |
| Arduino Uno REV3 | $28 | ATmega328P, 16 MHz |
| ELEGOO ESP-32 3-Pack | $20 | ESP32, dual core, 240 MHz |
A builder placing an Uno-class chip in a small project.
Amazon reports what buyers took in the month before this page was last checked: at least 500.
The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.
Specifications: the manufacturer sheet for maker machines and tools and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
Small board · ESP32-S3, 240 MHz · Wi-Fi, Bluetooth 5.0 · USB-C · HID · MicroPython · headers
A Nano-sized board with an ESP32-S3 at 240 MHz, Wi-Fi and Bluetooth 5.0, USB-C and MicroPython support, with headers fitted.
Best for: A builder fitting wireless into small projects.
≈ $19
Board · Renesas RA4M1 + ESP32-S3 · Wi-Fi, Bluetooth 5.0 · USB-C · CAN · 12-bit DAC · Qwiic · 12 × 8 LED matrix
A modern Uno pairing a Renesas RA4M1 with an ESP32-S3 for Wi-Fi and Bluetooth, plus USB-C, CAN, a 12-bit DAC and an LED matrix.
Best for: A learner who wants wireless with Arduino support.
≈ $28
Board · ATmega328P, 16 MHz · 32 KB flash, 2 KB SRAM · 14 digital I/O, 6 analog · USB
The original Arduino Uno: an ATmega328P at 16 MHz with 32 KB of flash, 14 digital and 6 analog pins, and full IDE support.
Best for: A beginner learning electronics.
≈ $28
