Vello FreeWave Captain Wireless TTL Triggering System for Canon E-TTL SLRs
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Description
SparkFun Line Follower Array Infrared, Sparkfun OriginalsThe SparkFun Line Follower Array is a long board consisting of eight IR sensors that have been configured to read as digital bits! We have designed the SparkFun Line Follower Arrays to follow a dark line of about inch width or smaller (spray paint or electrical tape) on a light background. Each array features visible LEDs that point upward when the board is attached (properly) so you can see what the robot sees, brightness control right on the board,
The SparkFun Line Follower Array is a long board consisting of eight IR sensors that have been configured to read as digital bits! We have designed the SparkFun Line Follower Arrays to follow a dark line of about � inch width or smaller (spray paint or electrical tape) on a light background. Each array features visible LEDs that point upward when the board is attached (properly) so you can see what the robot sees, brightness control right on the board, and an I2C interface for reading and power control. Here at SparkFun, the RedBot Shadow Chassis was used as a test platform but really this was designed as an add-on for almost any bot.
The line follower functions by taking an 8-bit reading of reflectance for use with following lines or reading dark/light patterns and can see from about ¼ to ¾ inches away. The IR brightness control and indicator can be adjusted with the on-board potentiometer and is capable of showing you the strength of the IR LEDs. Illumination can be turned on and off with software to conserve power, or left on all the time for faster readings. The SparkFun Line Follower Array requires 5V of power with a supply current range of 25-185mA with strobing disabled and 16-160mA with it enabled. Additionally we have added six mounting holes to the line follower with the two inner holes designed to fit our Shadow Chassis while the other four are general purpose.
Note: As you know our Sun emits quite a bit of infrared light, making the SparkFun Line Follower Array much less effective in direct sunlight. Plan your projects accordingly!
Features:
- 8 sensor eyes (QRE1113, like in our line sensor breakout)
- I2C interface
- Adjust IR brightness on the fly with a knob
- Switch IR on and off with software
- Switch visual indicators on and off with software
- Invert dark/light sight with software
- Based on the SX1509 I/O expander
Documents:
- Schematic
- Eagle Files
- Hookup Guide
- Datasheet (QRE1113GR)
- GitHub (Design Files)
- GitHub (Library & Example Code)
- Product Video
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
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- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
La Roche-Posay Toleriane Cleanser: Gentle Care for Sensitive Skin 💧✨
Size: 13.52 Fl Oz (Pack of 1), Style: 13.52 Fl Oz (Bottle)
The La Roche-Posay Toleriane Cleanser is a fantastic skincare product for anyone with sensitive or easily irritated skin. Its gentle formula effectively removes dirt, oil, and makeup without leaving the skin feeling dry or tight. The lightweight texture feels refreshing, and it helps maintain the skin’s natural moisture barrier. The large bottle with pump packaging is convenient for daily use and lasts a long time. Overall, it’s highly recommended for those looking for a reliable, dermatologist-inspired cleanser that leaves skin feeling clean, soft, and balanced.
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Reviewed in the United States on May 12, 2026
★★★★★ 5
Finally a Cleanser That Doesn’t Trigger My Breakouts
Size: 13.52 Fl Oz (Pack of 1), Style: 13.52 Fl Oz (Bottle)
I've been using this facewash twice a day for about a month now and out of all the cleansers I've tried this is definitely one of the few that have not made my acne worse. Usually my skin reacts within a week or two of trying new products but with this product it remained calm while still providing assistance for excess oil and little breakouts on my face.
After cleansing with this product, it leaves my skin feeling clean but without that "overdried" feeling which is something that very rarely happens for me. The texture of the product is a thin gel that foams easily after using only a small amount, and it will rinse off completely and leave no residue behind when you're done using it. The product has no noticeable scent and feels extremely gentle even on days when my skin is more irritated or sensitive.
The price of this product is slightly higher than some of the other basic drugstore cleansers, but the amount of time I have been able to use this product has been remarkable. If you're someone who wears heavy makeup on a daily basis, you may think that this product is not strong enough or you may feel like it's too gentle; however, it has proven to be a reliable and low-maintenance product for anyone with acne prone/sensitive skin types.
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Reviewed in the United States on April 3, 2026
★★★★★ 5
Gentle, Effective Cleanser That Leaves Skin Feeling Clean Without Drying
Size: 13.52 Fl Oz (Pack of 1), Style: 13.52 Fl Oz (Bottle)
I’ve been using the La Roche-Posay Toleriane Purifying Foaming Facial Cleanser for a bit now, and it’s been a really solid addition to my routine.
The cleanser has a light, foaming texture that spreads easily and does a great job removing dirt and oil without being harsh. It leaves my skin feeling clean and refreshed, but not tight or overly dry, which is something I’ve struggled with using other face washes.
I also appreciate that it’s gentle enough for sensitive skin. There’s no strong fragrance, and it hasn’t caused any irritation or breakouts. It feels like a good balance between being effective and still mild enough for daily use.
The bottle is simple and easy to use, and a little goes a long way, so it should last a while.
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Reviewed in the United States on May 24, 2026
★★★★★ 5
Gentle, Effective Cleanser With Great Value Refills
Size: 13.52 Fl Oz (Pack of 1), Style: 13.52 Fl Oz (Refill)
Very reliable cleanser with clean formula and refill option. Fragrance-free, and doesn't irritate my skin. Excellent for daily use. The refill bag is a bit hard to navigate though, kind of floppy to pour from, and the cap broke of for me the first time.
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Reviewed in the United States on April 30, 2026
★★★★★ 4
Good Option for Sensitive Skin.
Size: 13.52 Fl Oz (Pack of 1), Style: 13.52 Fl Oz (Bottle), Size: 13.52 Fl Oz (Pack of 1), Style: 13.52 Fl Oz (Bottle)
I've been using this foaming facial cleanser for a few months and overall, I've had a good experience with it so far. I usually use it at night, and I start by removing my makeup with micellar water, then use this cleanser in the shower, followed by moisturizer.
One thing I will say is that even though my skin tends to lean oily, this cleanser does leave a bit of a tight, slightly dry feeling on my skin after washing. I wouldn't really describe it as super moisturizing, but it's not a dealbreaker for me since I always follow up with moisturizer and it fixes that feeling right away. It also hasn't caused any irritation or breakouts for me, which is a big plus since I do have sensitive skin. It definitely feels non-greasy and very lightweight. The texture comes out as a gel, but it foams up really easily once you start using it. I also don't notice much fragrance in it, which makes it a good option for sensitive skin overall.
Overall, I'd say it's a good product to try out. Just be aware that it can feel a little drying afterward!
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Reviewed in the United States on May 19, 2026
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