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Description
Arduino Leonardo (with headers)The Arduino Leonardo is a microcontroller board based on the ATmega32u4 (datasheet). It has 20 digital input output pins (of which 7 can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a micro USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC to DC adapter or battery to get
The Arduino Leonardo is a microcontroller board based on the ATmega32u4 (datasheet). It has 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a micro USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.
The Leonardo differs from all preceding boards in that the ATmega32u4 has built-in USB communication, eliminating the need for a secondary processor. This allows the Leonardo to appear to a connected computer as a mouse and keyboard, in addition to a virtual (CDC) serial / COM port. It also has other implications for the behavior of the board; these are detailed on the getting started page.
Summary
- Microcontroller ATmega32u4
- Operating Voltage 5V
- Input Voltage (recommended) 7-12V
- Input Voltage (limits) 6-20V
- Digital I/O Pins 20
- PWM Channels 7
- Analog Input Channels 12
- DC Current per I/O Pin 40 mA
- DC Current for 3.3V Pin 50 mA
- Flash Memory 32 KB (ATmega32u4) of which 4 KB used by boot loader
- SRAM 2.5 KB (ATmega32u4)
- EEPROM 1 KB (ATmega32u4)
- Clock Speed 16 MHz
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4.5 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 4
Close...but not quite the length.
Size: XL (16 in), Style: 2 Knot Rope Bone, Size: XL (16 in), Style: 2 Knot Rope Bone
I will admit, I thought their picture was off, because when I saw 16" in the title I was expecting the distance between the knots to be 16 inches in length. So if you're looking for a good length tug-of-war rope for a medium to large dog, look somewhere else. I'm not returning it, it's good quality cotton rope asides that. My dog needs a new toy and cotton ones are harder to find. Next time I'm going to their amazon store directly to look for what I wanted though. I will buy from them again, I like the quality and the fact that, for once, cotton is actually cotton.
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Reviewed in the United States on February 12, 2025
★★★★★ 5
Great toy
Size: Small (9 in), Style: 2 Knot Rope Bone
I got this because my puppy chews through the other kinds of rope toys. This one is laying though. Only thing is, she's eating off the loose strings. Lol So she's pooping strings all the time
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Reviewed in the United States on February 14, 2026
★★★★★ 5
The strings on the end are super engaging and the rope itself holds up really well
Size: Small (9 in), Style: 2 Knot Rope Bone
Super cost effective way to redirect chewing!! Our 4 month old corgi quickly made this is favorite toy. He loves the strings on the side and tugs on it endlessly, and the main rope was pretty firm at first but has softened up while maintaining its strength. Highly recommend as an interactive toy or just something for your dog to chew on their own so you can take some time to chill on your own!
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Reviewed in the United States on July 25, 2024
★★★★★ 3
Not for aggressive chewers!
Size: Large (14 in), Style: 2 Knot Rope Bone
At first glance, this rope toy seemed sturdy and well made. However, within an hour of my Vizsla chewing on it, she had already bitten off and unfortunately swallowed several of the fringes. The center of the rope also began to unravel.
This toy may be suitable for smaller dogs or those that aren’t aggressive chewers, but I wouldn’t recommend it for large dogs or heavy chewers. Additionally, while it may measure 14 inches before being knotted at the ends, the total length is shorter than advertised.
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Reviewed in the United States on April 5, 2026
★★★★★ 5
Two knots, Not 3…
Size: Large (14 in), Style: 2 Knot Rope Bone
Been subscribed & saving on 3 knot version for years. My dogs gnaw through the center knot and they quickly unravel. This 2 knot version seems to last much longer.
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Reviewed in the United States on October 19, 2025
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