SKU: 7810925774

SparkFun SparkFun RedBoard - Programmed with Arduino

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Description

SparkFun SparkFun RedBoard - Programmed with ArduinoAt SparkFun we use many Arduinos and were always looking for the simplest, most stable one. Each board is a bit different and no one board has everything we want, so we decided to make our own version that combines all our favorite features. The SparkFun RedBoard combines the simplicity of the UNOs Optiboot bootloader (which is used in the Pro series), the stability of the FTDI (which we all missed after the Duemilanove was discontinued) and the R3

At SparkFun we use many Arduinos and we’re always looking for the simplest, most stable one. Each board is a bit different and no one board has everything we want, so we decided to make our own version that combines all our favorite features. The SparkFun RedBoard combines the simplicity of the UNO’s Optiboot bootloader (which is used in the Pro series), the stability of the FTDI (which we all missed after the Duemilanove was discontinued) and the R3 shield compatibility of the latest Arduino UNO R3.

The RedBoard can be programmed over a USB Mini-B cable using the Arduino IDE: Just plug in the board, select “Arduino UNO” from the board menu and you’re ready to upload code. RedBoard has all of the hardware peripherals you know and love: 14 Digital I/O pins with 6 PWM pins, 6 Analog Inputs, UART, SPI and external interrupts. We’ve also broken out the SDA, SCL and IOREF pins that showed up on the UNO R3, so the RedBoard will be compatible with future shields. This version adds an SMD ISP header for use with shields.

You can power the RedBoard over USB or through the barrel jack. The on-board power regulator can handle anything from 7 to 15VDC. Check out the related items below for a compatible wall-wart power supply.

Not sure which Arduino or Arduino-compatible board is right for you? Check out our Arduino Buying Guide!

Features:

  • ATmega328 microcontroller with Optiboot (UNO) Bootloader
  • USB Programming Facilitated by the Ubiquitous FTDI FT231X
  • Input voltage - 7-15V
  • 0-5V outputs with 3.3V compatible inputs
  • 14 Digital I/O Pins (6 PWM outputs)
  • 6 Analog Inputs
  • ISP Header
  • 32k Flash Memory
  • 16MHz Clock Speed
  • All SMD Construction
  • R3 Shield Compatible
  • Red PCB!

Documents:

All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
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SKU: 7810925774

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4.7 ★★★★★
Based on 29 reviews
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A
Verified Purchase
Amazon Customer
Natrona Heights, US
★★★★★ 5
Perfect fit
Color: Black, Size: 9.4*4.1*5IN
Perfect size!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 12, 2025
D
Verified Purchase
Diann
Carnegie, US
★★★★★ 5
Love this sink organizer
This fits really well alongside our sink. Keeps the soap containers off the counter so the water drains off and keeps things much neater. When the tray is full, simply pour the water out, rinse, and put back.
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Reviewed in the United States on November 30, 2024
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Verified Purchase
Amazon Customer
Waukegan, US
★★★★★ 3
Missing Dividers
Color: Black, Size: 9.4*4.1*5IN
Disappointed it was missing the adjustable dividers. Not great to hold dishwashing brushes. They slip right threw the side.
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Reviewed in the United States on June 3, 2026
D
dr
San Leandro, US
★★★★★ 4
Sturdy. Built to last. It solves all the problems my old organizer had. Very satisfied.
Review for ARTLEO Kitchen Sink Caddy with Super Water Absorbent Diatomite Stone Sink Tray, Fast Drying Sink Organizer with High Dish Brush Holder Sponge Holder for Kitchen Sink, Stainless Steel This appears to be a sturdy organizer of stainless steel painted with a good amount of black protective paint. I ordered it to replace an inferior organizer of the same material (made by a different company altogether). This one solves the problems I had with my previous organizer which had begun to rust and break apart after six months of use. The narrow steel bars on the bottom shelf of this new organizer are supported by wider steel flats in the frame that will prevent them from breaking off the frame. (My old organizer bars broke because they were barely welded onto the frame and the repeated "pushing down" of my soap pump-bottle eventually broke them apart from the frame). The pads that prevent it from sliding across my counter in big waves (we live and travel on a boat) are secured around the steel legs as opposed to just being glued onto the bottom (like the pads of my previous organizer were, which fell off). There is no metal hanging over onto the sink edge to cause rust (like the metal that had caused rust with my old organizer.) The dish-brush holder can fit on the inside of the frame or it can hang on the outside of the organizer, which is nice because it makes more room if you have many tools that you like to use at the sink. And it can be compact if you don't. Be cautious not to remove the hanging part (dish-brush holder) too often because repeated wear can cause the paint to rub off and it could begin to rust. The "Water Absorbent Diatomite Stone" is new to me but it seems to be working just fine. I assume I will have to clean out the ridges of it as gunk forms there, but that would be the case with any sink organizer tray. I am very satisfied with this organizer, it is robust and it solves all the problems I had with my previous one. The price is on the higher side of similar organizers, currently priced at $23.99. All the best, Mrs. dr
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Reviewed in the United States on June 16, 2025
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Verified Purchase
Orlando J.
Natrona Heights, US
★★★★★ 5
Great design for a kitchen sink organizer -- will not tip or accumulate water
We've had an Oxo kitchen sink organizer for years, and it's been fine, except 1) tall brushes (for example, Oxo brushes) make it tippy, stray elbows or imperfect placement of the brush would knock it into the sink and 2) it built up a soapy sludge in the bottom that that had to be drained and wiped down constantly. This item solves both issues perfectly. Likes: Size - I think it's about 5 inches deep, which is just right to fit the strip of countertop that runs behind the sink, up against the backsplash Weight - The drying stone in the bottom gives the baskets some real heft, so there is no tipping it over by bumping a brush handle -- it really stays put Drying stone -- The diatomaceous drying stone that slides into the bottom of the main basket is a great idea. These are porous stones that will absorb water and then allow it to evaporate fairly quickly. So far, it seems to be doing its job well. I'm sure the stone will need a wipe down now and then to stay clean, but no puddles of sludgy soapy water in the bottom is a big plus Overall Design/Build quality -- The unit seems solid. It's a simple design, but there are no sharp edges or unfinished bits. Once in place it doesn't wobble a bit. I wasn't sure about the black powder-coated finish, but installed it looks clean and it's unobtrusive. I appreciate that the smaller basket for tall brushes sits on hooks and can be hung inside or outside the main basket. Ours sits inside, but there's plenty of room left over for sponges . And there's still room to stand up a bottle of liquid detergent or counter-top spray. NOT SO LIKES Nothing so far. I notice a lot of this style of sink organizer on Amazon, so presumably they're selling well. It's a great improvement over the older kinds. Five big, clean, well-organized stars. Highly recommended.
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Reviewed in the United States on December 6, 2025

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