These DotStar LED strips are a great upgrade for people who have loved and used NeoPixel strips for a few years but want something even better. DotStar LEDs use generic 2-wire SPI, so you can push data much faster than with the NeoPixel 800 KHz protocol and there’s no specific timing required. They also have much higher PWM refresh rates, so you can do Persistence-of-Vision (POV) and have less flickering, particularly at low brightness levels.
Like NeoPixels, DotStar LEDs are 5050-sized LEDs with an embedded microcontroller inside the LED. You can set the color/brightness of each LED to 24-bit color (8 bits each red green and blue). Each LED acts like a shift register, reading incoming color data on the input pins, and then shifting the previous color data out on the output pin. By sending a long string of data, you can control an infinite number of LEDs, just tack on more or cut off unwanted LEDs at the end. The PWM is built into each LED-chip so once you set the color you can stop talking to the strip and it will continue to PWM all the LEDs for you
However, unlike NeoPixels, these LEDs have 2 wires (input and output) for sending data – one clock pin and one data pin. That means you need two pins, not one, to control DotStars. Because the clock and data is seperated, you can use any processor speed or type to control these strips, and you don’t have to worry about being careful with the timing. Hardware SPI support is handy but not required. This makes them excellent for use with any microcontroller or microprocessor, including Arduino, Raspberry Pi, BeagleBone, Propeller, SparkCore, and any ‘raw’ microcontrollers/microprocessors. It’s very easy to port the library, and you can send data to the pixels at up to 32MHz clock rate!
Another nice thing about DotStars is their high PWM rate. You only have to set the 24-bit color data for each pixel LED once, and then the LED+built-in-chip will handle the PWMing of the red, green and blue. On NeoPixels, this PWM rate happens 400 Hz, which works well but is noticably at lower brightnesses and if the strip is moving in any way. DotStars have a 20 KHz PWM rate, so even when moving the strip around, you won’t see the pixelation, the color blending is very smooth.
This is the 30 LED-per-meter version of our DotStar strips, on white flex PCB. The strip is made of flexible PCB material, and comes with a weatherproof sheathing. You can cut this stuff pretty easily with wire cutters, there are cut-lines every 1.3″/3.4cm (1 LED each). Solder to the 0.1″ copper pads and you’re good to go. Of course, you can also connect strips together to make them longer, just watch how much current you need! We have a 5V/2A supply that should be able to drive 1 meter, a 5V 4A that can do a couple meters, and a 5V/10A supply that can drive up to 10 meters (depending on use) You must use a 5V DC power supply to power these strips, do not use higher than 6V or you can destroy the entire strip!
These strips come in 5 meter reels with a 4-pin JST SM connector on each end. These strips are sold by the meter! If you buy 5 meters at a time, you’ll get full reels with two connectors. If you buy less than 5m, you’ll get a single strip, but it will be a cut piece from a reel which may or may not have a connector on it. To wire up these strips we suggest picking up some JST SM plug and receptacle cables for the signal wires For the power wires, you will also probably want a 2.1mm DC jack to wire in so you can connect one of our 5V wall adapters to power it.
Adafruit has a tutorial showing wiring, power usage calculations, example code for usage, etc. Please check it out!
TECHNICAL DETAILS
Please note: we are currently shipping a version that has DOTSTAR_BGR color order. You can select the color order in your Arduino sketch. Check the DotStar tutorial for details on how to do this! The LED colors are otherwise identical, you just have to pipe the data to it in a slightly different order.
Technical specs (for the strips):
- Width (with weatherstripping): 14mm / 0.55″
- Width (w/o weatherstripping): 10mm / 0.4″
- Thickness (with weatherstripping): 4mm / 0.16″
- 30 LEDs per meter
- Pixel pitch: 33.3mm / 1.3″ between LEDs
- Operating temperature: -40°C – 40°C
- Storage temperature: -10°C – 50°C
Technical specs (for the LEDs):
- SK9822 Datasheet
- Light source: Epistar 5050 SMD LEDs
- LED Brightness: Red ~600mcd, Green ~500mcd, Blue ~150mcd
- Beam angle: ~160°
- Max current draw per RGB LED: ~60mA (20mA max per Red, Green & Blue LED)
Note: Strips come with 4 solder points per segment, but the arrangement may vary depending on the supplier, so please check when soldering/powering!
Fast Shipping and Professional Packing
We offer a broad range of shipping options due to our long-standing partnerships with UPS, FedEx and DHL. Our warehouse staff is highly trained and will pack the goods according to our precise and exact specifications. Before shipping, all goods will be thoroughly examined and securely secured. We deliver to hundreds of thousands of customers every day in different countries. The fact that we are determined to become the largest online retailer in the world is evident. Warehouses and distribution centres can be located in Europe as well as the USA.
Note: Orders with more than one item will be assigned a separate processing time for each item.
Before shipment, all ordered items will be thoroughly examined. Most orders are now shipped within 48 hrs. Delivery is expected to take between 3 and seven days.
Returns
Stock is dynamic, and cannot be fully controlled by us because of the involvement of multiple parties including the factory and our warehouse. This means that the actual stock could alter at any time. It's possible that the stocks could be depleted after your order has been processed.
The policy is for 30 days. Unfortunately, if 30 days have passed from the date you purchased the item, we will not be able to provide a refund or exchange.
The item must not be in use and must be in the original packaging. You must have the item in the original packaging.
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