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Ships within 48 hours · Estimated delivery Jul 29 - Aug 3
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Description
Makeblock Quad RGB SensorThe quad RGB sensor uses visible light as fill lights, which significantly reduce the interference of ambient light. In addition, it provides the function for recognizing colors. The new ambient light calibration function also reduces the interference of the ambient light in line following. With four light sensors, it can support more programming scenarios. The detection range is from 515 mm from the object. Working Steps: Double press: When the
The quad RGB sensor uses visible light as fill lights, which significantly reduce the interference of ambient light. In addition, it provides the function for recognizing colors. The new ambient light calibration function also reduces the interference of the ambient light in line following. With four light sensors, it can support more programming scenarios. The detection range is from 5–15 mm from the object.
Working Steps:
- Double-press: When the button is double-pressed, the quad RGB sensor starts to learn the background and line for line following.
- Place the light sensors on the background of the line-following track map and double-press the button. When you see the LEDs indicating the line-following state blink quickly, sway the sensors from side to side above the background and line until the LEDs stop blinking. It takes about 2.5 seconds. The parameter values obtained are automatically stored. If the learning fails, the LEDs blink slowly, and you need to start the learning again.
- Long-press: When the button is long-pressed, the quad RGB sensor switches the color of the fill lights. Generally, you don't need to change the color. The color is set automatically after the learning is complete.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.4 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 5
Good Reading
Format: Paperback
The third book we chose to read for our summer reading program was Not That Pet! I am a nanny of a six-year-old girl going into first grade. It’s fun seeing a child’s eyes light up when a book or story engages their imagination. This story was another hit.
This was an entertaining read! This is a rhyming read-aloud story that had us both giggling from the beginning of the story to the end. The main character, Mabel, is allowed to pick the family pet. She is determined to find the perfect pet. Her choices had us groaning, ‘oh nooo’ while shaking our heads and laughing out loud. We couldn’t read fast enough to see Mabel’s next choice. Her final decision was unpredictable. We couldn’t believe the final choice was a…. well, you’ll just have to read the story yourself to find out.
The illustrations themselves had us smirking. We took the time to really look at the pages and discovered small details that really added to the enjoyment of the story. We read this story several times which is an indicator that this book is a keeper.
Enjoy reading Summer 2023!
originally posted at long and short reviews
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Reviewed in the United States on July 13, 2023
★★★★★ 5
So much fun!
Format: Hardcover
A hilarious book that keeps pages turning to see which wild pet will be next
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Reviewed in the United States on February 26, 2023
★★★★★ 5
As good As It Get
Format: Kindle
I read the second book in this cottage series about smart town/village life in the Cotswolds before this first one. Both are so very very good and touching. Can't wait to read the third one in this series. These sapphic HEA romances are as good as it gets.
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Reviewed in the United States on November 11, 2025
★★★★★ 4
Sweet, Escapist, and Good Characters
Format: Kindle
I enjoyed the setting of this book. I love a book with a good sense of place. The chemistry between the characters was good and built through the story, I thought the book could have benefited from heavier editing. I appreciated the good dialogue, but it seemed unnecessarily copious at times, putting a drag on the forward motion of the story. Worth my time - absolutely.
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Reviewed in the United States on September 18, 2019
★★★★★ 5
Bravo!
Format: Kindle
"For two people who love words, we f***ing suck at communication." These words, uttered near the end of the book, really describe the relationship between Josie and Harriett (Harry). They have both built their careers on the crafting of words, but when it comes to them communicating with each other, there are many misunderstandings, foot-in-mouth moments, and missed opportunities to say how they feel. That, along with each one's hesitation to make the first move, causes the sexual tension to build and build, so when they finally do get together... well, you don't want to miss that!
The contrast of Josie, the American, and Harry, the Brit, is fun. The story is heart-warming. The banter is enjoyable and doesn't seem like it's just filling space in the book. The supporting characters are colorful and have depth. I really enjoyed it, so I say, "Bravo, TB Markinson! A standing ovation from me!"
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Reviewed in the United States on November 3, 2019