Posts by Ben
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We are having a big Memorial Day sale now through Tuesday, with discounts on over 1000 products when you use the coupon code MEMORIALDAY17. Stock up on robot parts now so you can build cool things all summer long! Note that we will be closed on Monday, so orders will not ship until Tuesday, May 30.
For more information, including all of the sale items, see the sale page.
Get a FREE copy of Circuit Cellar magazine’s April 2017 issue issue with your order, while supplies last. To get your free issue, enter the coupon code CIRCUIT0417 to your shopping cart, or click the link. The magazine will add 6 ounces to your order weight when calculating your shipping options.
For back issues and more information, see our free Circuit Cellar magazine offers.
We’re happy to announce that our previously discontinued addressable through-hole RGB LEDs are once again part of our catalog and in stock! While these might look like ordinary RGB LEDs, each one contains its own integrated WS2811 LED driver that lets you chain them together and individually control them all with a single digital output from a microcontroller. The interface is very similar to that of our SK6812-based LED strips, so there is a variety of sample code available for the Arduino, AVR, and mbed microcontroller platforms.
Two different sizes of addressable RGB LED. From left to right, their diameters are: 5 mm (#2535) and 8 mm (#2536).
Our newest step-up/step-down voltage regulator, the S9V11F5, takes input voltages between 2 V and 16 V and increases or decreases that voltage as necessary to produce a fixed 5 V output with a typical efficiency of over 90%. (Note that it requires a minimum of 3 V to start up, but it can operate down to 2 V once it is running.) It can temporarily deliver peaks of around 2 A, and the maximum continuous output current depends on the input voltage as shown in the graph below:
The ability to raise or lower the input voltage makes this regulator especially well suited for battery-powered applications where the nominal battery voltage is close 5 V, such as when using four NiMH cells, since the battery voltage transitions from above 5V to below as the battery discharges. The wide input voltage range is also great for applications where you want a lot of flexibility in power supply choice or for systems powered by alternative energy sources like solar or wind, where the output voltage can vary a lot.
With a wider input voltage range and its ability to deliver more current, the S9V11F5 is a higher-performance alternative to our popular S7V7F5 buck-boost regulator, all while being even smaller in size thanks to its double-sided assembly.
For more information on this regulator, visit the S9V11F5 product page, and for other regulator options, you can take a look at our full selection of step-up/step-down regulators, step-up voltage regulators, and step-down voltage regulators.
Our vast assortment of metal gearmotors has gotten even bigger! With over 100 micro metal gearmotor options and nearly 100 25D mm metal gearmotor versions to choose from, the next step seemed clear: expand our offering of 20D mm metal gearmotors, which fit nicely between the smaller micro metal gearmotors and larger 25D mm metal gearmotors. We have replaced our initial four 20D mm options with twelve entirely new gear ratios that feature more efficient gearboxes and much longer output shafts.
The motor portion is unchanged, and we now also offer versions with an extended motor shaft that rotates at the same speed as the input to the gearbox and can be used to add an encoder, such as our new magnetic encoder for 20D mm metal gearmotors, for closed-loop speed or position control.
The table below shows our current offering of 20D mm metal gearmotors:
@ Rated Voltage
@ Rated Voltage
@ Rated Voltage
(Gearbox & Motor)
|6 V||3.2 A||560 RPM||30 oz-in||25:1 6V||25:1 6V dual-shaft|
|450 RPM||35 oz-in||31:1 6V||31:1 6V dual-shaft|
|225 RPM||60 oz-in||63:1 6V||63:1 6V dual-shaft|
|180 RPM||75 oz-in||78:1 6V||78:1 6V dual-shaft|
|140 RPM||90 oz-in||100:1 6V||100:1 6V dual-shaft|
|110 RPM||100 oz-in||125:1 6V||125:1 6V dual-shaft|
|90 RPM||115 oz-in||156:1 6V||156:1 6V dual-shaft|
|70 RPM||125 oz-in||195:1 6V||195:1 6V dual-shaft|
|55 RPM||140 oz-in||250:1 6V||250:1 6V dual-shaft|
|45 RPM||150 oz-in||313:1 6V||313:1 6V dual-shaft|
|35 RPM||160 oz-in||391:1 6V||391:1 6V dual-shaft|
|29 RPM||170 oz-in||488:1 6V||488:1 6V dual-shaft|
We also have 12V versions on the way, so stay tuned for more information!
We will be closed for Christmas on Monday, December 26 and for New Year’s Day on Monday, January 2, so orders placed after 2 PM Pacific Time on the 23rd or 30th will be shipped on the following Tuesday. Additionally, FedEx Ground does not ship on the 23rd (today).
Merry Christmas and happy New Year!
We have had a lot of fun with this year’s Black Friday/Cyber Monday sale so far, and I hope many of you have, too. The sale isn’t over yet, but it will be soon, so make sure you get any last-minute orders placed in the next eight hours!
Also, a big thank-you to the shipping department for getting all the orders out (especially to those who came in on the weekend to make sure everything went smoothly)!
Our Black Friday / Cyber Monday sale is going strong, and we have been working hard to make and ship the products that people are getting great deals on. If you have already placed an order, thank you! If you are still trying to decide if you want to take advantage of our amazing deals, don’t wait too long—the sale ends Monday night.
We’re less than two days away from our annual Black Friday/Cyber Monday sale, our biggest sale of the year! This year, in addition to our usual doorbuster deals (limited total quantity promotions at extreme discounts) and large discounts, we are offering up to $7 off of shipping for those who claim their coupon before the sale begins. For many of our smaller items shipping within the US, that discount will be enough to make shipping free, and it should also make a meaningful reduction in shipping costs for our international customers who want to participate in this American tradition. To take advantage of this offer, just log in to your account and follow this link, which will generate a coupon code just for you. You must get your coupon before the sale begins, and you can then use it during our sale, which will run from Wednesday, November 23 through Monday, November 28. Keep an eye on our Black Friday/Cyber Monday sale page for all the latest about the sale!
We are now carrying the Raspberry Pi Model A+ 512MB, which is just like the previous Model A+ but with double the RAM, so it also works with our various Raspberry Pi expansion boards. In particular, it can be combined with our A-Star 32U4 Robot Controller with Raspberry Pi Bridge to make a powerful control center for a small robot (check out this tutorial).
A-Star 32U4 Robot Controller SV with Raspberry Pi Bridge on a Raspberry Pi Model A+.
And speaking of small robots, stay tuned for some fun new products that will also work with the Raspberry Pi!