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# Posts tagged “new products” (Page 5)

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# New product: Raspberry Pi 3 Model B+

Posted by Jan on 25 July 2018

We are now carrying the Raspberry Pi 3 Model B+. The Raspberry Pi is a popular credit card-sized computer that can run ARM Linux distributions. The Raspberry Pi 3 Model B+ has many performance improvements over the Pi 3 Model B including a faster CPU clock speed (1.4 GHz vs 1.2 GHz), increased Ethernet throughput, and dual-band WiFi. It also supports Power over Ethernet with a Power over Ethernet HAT. Continued…

# New Product: Jrk G2 21v3 USB Motor Controller with Feedback

Posted by Jan on 20 July 2018
Tags: new products

Our Jrk G2 family is growing! Today we released the Jrk G2 21v3 USB Motor Controller with Feedback, which you can think of as the baby version of the new Jrk G2 motor controllers we released a few months ago or the updated version of our original Jrk 21v3. I already wrote about the history of the Jrk motor controllers in the blog post announcing the Jrk G2 motor controllers, so for today’s announcement I just want to quickly go over how small this motor controller is and how much we packed into it.

First off, this latest controller is small! Here it is next to the original Jrk 21v3:

We managed to reduce the size by more than a third, which is quite an achievement given that connectors and mounting holes already took up a pretty good portion of the board area, and we did not want to reduce those. If you looked closely at that picture above, you probably noticed that the motor driver and microcontroller are not visible on the G2, and that’s because they’re now on the back side. Here is that back side, with a quarter for scale:

Because the Jrk G2 21v3 is based on the same foundation as our bigger controllers, you get all the same convenient configurability over USB using our software utility that is available for Windows, macOS, and Linux (if you are interested, you can read more details in this post about the Jrk G2 software).

You also get all the great features and interfaces of the Jrk G2 family:

• Easy open-loop or closed-loop control of one brushed DC motor
• A variety of control interfaces:
• USB for direct connection to a computer
• TTL serial operating at 5 V for use with a microcontroller
• I²C for use with a microcontroller
• RC hobby servo pulses for use in an RC system
• Analog voltage for use with a potentiometer or analog joystick
• Feedback options:
• Analog voltage (0 V to 5 V), for making a closed-loop servo system
• Frequency, for closed-loop speed control using pulse counting (for higher-frequency feedback) or pulse timing (for lower-frequency feedback)
• None, for open-loop speed control
• Note: the Jrk does not support using quadrature encoders for position control
• Ultrasonic 20 kHz PWM for quieter operation (can be configured to use 5 kHz instead)
• Simple configuration and calibration over USB with free configuration software utility (for Windows, Linux, and macOS)
• Configurable parameters include:
• PID period and PID coefficients (feedback tuning parameters)
• Maximum current
• Maximum duty cycle
• Maximum acceleration and deceleration
• Error response
• Input calibration (learning) for analog and RC control
• Optional CRC error detection eliminates communication errors caused by noise or software faults
• Reversed-power protection
• Optional feedback potentiometer disconnect detection

Here is a quick comparison of the different Jrk versions, including the original ones that we do not recommend for new designs:

# New Product: Dual TB9051FTG Motor Driver Shield for Arduino

Posted by Jan on 13 July 2018
Tags: new products

I am happy to announce the Dual TB9051FTG Motor Driver Shield for Arduino. It gives you two of our favorite integrated motor driver (you can read more about why I like it in my TB9051FTG carrier blog post) in the convenient Arduino shield form factor. You can also think of it as a lower-cost, slightly higher-performance version of our popular Dual MC33926 Motor Driver Shield for Arduino.

With a 4.5 V to 28 V operating range and the ability to deliver up to a few amps per motor, the TB9051FTG is great for a huge range of small hobby and toy motors that you might have available in your parts box or classroom.

For those who don’t need all the power that the TB9051FTG can support, we also have the smaller (and lower cost) Dual MAX14870 Motor Driver Shield for Arduino.

# Updated product: A-Star 32U4 Mini SV

Posted by Jan on 10 May 2018

I think of our new A-Star 32U4 Mini SV as more of an update than a genuinely new product. For those of you not already familiar with our A-Star 32U4 Minis, they are a series of ATmega32U4-based, USB-programmable controllers with integrated switching regulators that offer operating voltage ranges not available on typical Arduino-compatible products; the “SV” variant features a step-down converter that enables efficient operation with inputs as high as 40 V. The slight PCB update for this latest product was done primarily for manufacturing reasons (e.g. reset button footprint change, addition of a test point, and switching to an ENIG finish that has worked better for us for double-sided assembly), but I figured that while we were updating all our internal records for the new PCB, we might as well also upgrade the regulator.

There’s a difficulty to making small improvements to products when we have hundreds of distributors around the world since even if we clear out our inventory of older versions before shipping newer units, we cannot control the inventory at distributors’ warehouses. We’re all usually tolerant of products being a little better than advertised, but when we try out a product, and then buy another one, and it ends up being worse than the one we already had, it just doesn’t feel right. (That’s one reason we sometimes do not reveal exact components we use, to avoid over-specifying some aspect of a product that we feel is not that important and that we do not want to commit to.) Once the regulator was different (and better!) enough to merit changing the product specifications, we needed to change the product number, and hence we have a new product.

The regulator change is from the ISL85415 to the ISL85418, both made by Renesas (which acquired Intersil). The ISL85415 was the first of a great regulator family by Intersil, and they expanded the family with several pin-compatible versions with various current specifications. These new parts could also operate to 40 V instead of the 36 V of the original ISL85415, but even as various aspects of the datasheets got updated, the maximum voltage rating on the ISL85415 in particular did not.

I asked our Intersil contact about why only the ISL85415 wasn’t rated to 40 V. It sounded like it was getting made on the same process as the other parts, and that the higher voltage rating of the later parts in the family was more the result of better characterization (and thus confidence) in the process than in any modifications to the process. In other words, new ISL85415 parts can probably do 40 V just like the other parts, and the older ISL85415 parts probably the same; they just weren’t confident about calling them 40 V parts then. But who knows what the inside story is. Maybe they did tweak their recipes a bit, and once they had parts out in the world with the 36 V spec, they didn’t want to change it without changing the part number, just like we couldn’t just keep our old A-Star part number and also talk about the higher maximum input voltage.

In case you’re wondering why we didn’t just put the even better ISL85410 or ISL854102 with 1.0 A and 1.2 A outputs on the new board, it’s because the performance limit moved more to the inductor, and even if the better regulator chip takes up the same space, we would need a bigger inductor to take advantage of that. And the A-Star Minis are pretty packed designs, so there’s not much room for a bigger inductor.

So, to make a long story short, the main new feature of the updated A-Star 32U4 Mini SV is that it can now take up to 40 V input and give you up to 800 mA to work with. This chart shows you what the new regulator (in darker green) can do compared to the older one (lighter green) on the A-Star Mini. It looks like the old one already provided well over its 500 mA specification.

To make this new product a little more exciting, we reassessed our costs and cut some of our margins in keeping with our push this year to be more competitive in our manufacturing. We have reduced the unit price from $19.95 to$14.95. And as usual for our new product releases this year, we’re offering an extra introductory discount: use coupon code ASMINISVINTRO to get up to three units for just $9.95. (Click to add the coupon code to your cart.) Our promotion banner shows the usual limit for the first 100 coupon uses, but since we’re also having our Arduino Day sale, we’re removing that restriction for the duration of the sale. If we run out of stock during the sale, you can still backorder with the discount, and we should be able to catch up with production within a few days. # New product: TB67H420FTG Dual/Single Motor Driver Carrier Posted by Jan on 9 May 2018 Tags: new products Hey! We have a new dual motor driver carrier for Toshiba’s exciting TB67H420FTG that offers quite the power jump from the TB6612FNG we popularized over a decade ago. This chip has a recommended operating range of 10-47 V and can deliver peaks of 4.5 A per channel. In our tests on this carrier, without additional heat sinking or airflow, the maximum continuous current is about 1.7 A per channel. One of the most common questions we get about our motor drivers is whether the outputs can be paralleled to drive a single bigger motor. The TB67H420FTG specifically has that feature built-in so that you can safely do that while only requiring control signal connections for one channel. This brings the available current for single-motor operation to 9 A peak and about 3.4 A continuous. The TB67H420FTG has a maximum supply voltage of 50 V, making it one of the highest-voltage drivers we have available. Please note that we populated with 50 V capacitors on the supply line, so there is less margin there than on our usual products if you want to push the upper voltage limits of this chip. As with most of our carriers, we also added reverse voltage protection. The MOSFET we use for that is a 40 V max MOSFET, so the maximum reverse voltage that it protects you from is that same 40 V. If you’re wondering why we didn’t use higher-voltage parts, it’s because the next standard voltages are much higher, 100 V in the case of the capacitors. Getting the same capacitance at that rating would require bulkier, more expensive capacitors for almost no benefit. I’m telling you here in case you are one of those people who like to put 55 V on a 50 V max part just to see what will happen. Be among the first 100 customers to use coupon code TB67H420INTRO (click to add the coupon code to your cart) and get up to three units at the introductory special price of$5.95 each. The first batches are just coming out of production, so even if the available stock goes to zero, you can still backorder with the coupon price and chances are that we will be able to fill your order the same day.

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