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Sixteen new micro metal gearmotor versions!

Posted by Ben on 22 April 2016
Tags: new products
Sixteen new micro metal gearmotor versions!

We just added 16 new micro metal gearmotors to our already huge selection, including three totally new MP (medium power) gear ratios: 5:1 MP, 210:1 MP, and 250:1 MP. With these new additions, we now have dual-shaft versions available in any combination of our 11 gear ratios and four motor types, giving you 44 different options that work with encoders like our magnetic encoder pair kit.

Magnetic Encoder Kit for Micro Metal Gearmotors assembled on a micro metal gearmotor with extended motor shaft.

In all, this increases our total selection of micro metal gearmotors to 85 unique options:

Motor Type Stall
Current
@ 6 V
No-Load
Speed
@ 6 V
Approximate
Stall Torque
@ 6 V


Single-Shaft
(Gearbox Only)


Dual-Shaft
(Gearbox & Motor)
high-power,
carbon brushes
(HPCB)
1600 mA 6000 RPM 2 oz-in 5:1 HPCB 5:1 HPCB dual-shaft
3000 RPM 4 oz-in 10:1 HPCB 10:1 HPCB dual-shaft
1000 RPM 9 oz-in 30:1 HPCB 30:1 HPCB dual-shaft
625 RPM 15 oz-in 50:1 HPCB 50:1 HPCB dual-shaft
400 RPM 22 oz-in 75:1 HPCB 75:1 HPCB dual-shaft
320 RPM 30 oz-in 100:1 HPCB 100:1 HPCB dual-shaft
200 RPM 40 oz-in 150:1 HPCB 150:1 HPCB dual-shaft
140 RPM 50 oz-in 210:1 HPCB 210:1 HPCB dual-shaft
120 RPM 60 oz-in 250:1 HPCB 250:1 HPCB dual-shaft
100 RPM 70 oz-in 298:1 HPCB 298:1 HPCB dual-shaft
32 RPM 125 oz-in 1000:1 HPCB 1000:1 HPCB dual-shaft
high-power
(HP)


(same specs as
HPCB above)
1600 mA 6000 RPM 2 oz-in 5:1 HP 5:1 HP dual-shaft
3000 RPM 4 oz-in 10:1 HP 10:1 HP dual-shaft
1000 RPM 9 oz-in 30:1 HP 30:1 HP dual-shaft
625 RPM 15 oz-in 50:1 HP 50:1 HP dual-shaft
400 RPM 22 oz-in 75:1 HP 75:1 HP dual-shaft
320 RPM 30 oz-in 100:1 HP 100:1 HP dual-shaft
200 RPM 40 oz-in 150:1 HP 150:1 HP dual-shaft
140 RPM 50 oz-in 210:1 HP 210:1 HP dual-shaft
120 RPM 60 oz-in 250:1 HP 250:1 HP dual-shaft
100 RPM 70 oz-in 298:1 HP 298:1 HP dual-shaft
32 RPM 125 oz-in 1000:1 HP 1000:1 HP dual-shaft
medium-power
(MP)
700 mA 4400 RPM 1.5 oz-in 5:1 MP dual-shaft
2200 RPM 3 oz-in 10:1 MP 10:1 MP dual-shaft
730 RPM 8 oz-in 30:1 MP 30:1 MP dual-shaft
420 RPM 12 oz-in 50:1 MP 50:1 MP dual-shaft
290 RPM 17 oz-in 75:1 MP 75:1 MP dual-shaft
220 RPM 21 oz-in 100:1 MP 100:1 MP dual-shaft
150 RPM 28 oz-in 150:1 MP 150:1 MP dual-shaft
100 RPM 36 oz-in 210:1 MP dual-shaft
90 RPM 41 oz-in 250:1 MP dual-shaft
75 RPM 46 oz-in 298:1 MP 298:1 MP dual-shaft
22 RPM 80 oz-in 1000:1 MP 1000:1 MP dual-shaft
low-power 360 mA 2500 RPM 1 oz-in 5:1 5:1 dual-shaft
1300 RPM 2 oz-in 10:1 10:1 dual-shaft
440 RPM 4 oz-in 30:1 30:1 dual-shaft
250 RPM 7 oz-in 50:1 50:1 dual-shaft
170 RPM 9 oz-in 75:1 75:1 dual-shaft
120 RPM 12 oz-in 100:1 100:1 dual-shaft
85 RPM 17 oz-in 150:1 150:1 dual-shaft
60 RPM 27 oz-in 210:1 210:1 dual-shaft
50 RPM 32 oz-in 250:1 250:1 dual-shaft
45 RPM 40 oz-in 298:1 298:1 dual-shaft
14 RPM 70 oz-in 1000:1 1000:1 dual-shaft

New version of the Wixel Shield for Arduino

Posted by Kevin on 14 April 2016
Tags: new products
New version of the Wixel Shield for Arduino

We’ve updated our Wixel Shield for Arduino with a few minor improvements. The Wixel Shield provides an easy way to connect a Wixel wireless module to your Arduino or A-Star 32U4 Prime, enabling wireless communication and even wireless programming (on some Arduinos). However, the original version of the shield was released many years ago, so it was not designed with the modern pinout of the Arduino Uno R3 in mind.

The Wixel Shield v1.1 adds pass-throughs for the four new pins—SCL, SDA, IOREF, and an unused pin—introduced by the R3 and present on all newer Arduinos, making it easier to stack other shields with it (especially ones that make use of the new I²C pin location). It also features improved level shifter circuits that make use of the IOREF voltage provided by the Arduino, allowing the shield to work automatically with both 5 V and 3.3 V Arduino boards.

The Wixel Shield for Arduino v1.1 is available by itself and as part of a combination deal that includes a pair of Wixels and a USB cable. See the user’s guide for the shield for additional information.

New product: MP3 Trigger V24

Posted by Ryan on 11 April 2016
Tags: new products
New product: MP3 Trigger V24

The updated MP3 Trigger V24 from SparkFun is now for sale. This new version features improved firmware that can read a configuration file from the SD card, making it much easier to use without a microcontroller. We posted previously about a project using an A-Star 32U4 and an MP3 Trigger to make a Scary shaking tombstone. The MP3 trigger also pairs nicely with the Maestro Servo Controllers because you can use a Maestro servo controller’s scripting capability to trigger sounds to play in sync with motion. You can see examples of how people are using them on our forum here and here.

New product: DRV8880 Stepper Motor Driver Carrier

Posted by Claire on 1 April 2016
Tags: new products
New product: DRV8880 Stepper Motor Driver Carrier

I’d like to introduce our latest addition to the Pololu stepper motor driver carrier family, the DRV8880 Stepper Motor Driver Carrier. This carrier for the Texas Instruments DRV8880 driver has the same form factor and basic layout as our A4988 carrier, which makes it a drop-in replacement in many systems. It also has a lot of the same features, like potentiometer adjustable current control and microstepping down to 1/16-step. In addition, the DRV8880 has many new features like inputs for dynamically scaling the current limit to 25%, 50%, 75%, or 100% of the limit set by the potentiometer, nine decay mode combinations, and autotune (insert Daft Punk joke here), which automatically selects the decay mode each PWM cycle for optimal current regulation performance.

The DRV8880 carrier has a maximum current of 1.6 A, and in our tests it could handle about 1 A per phase continuously. It has a 6.5 V to 45 V input voltage range, which is the widest of any of our stepper motor drivers, and it supports both 3.3 V and 5 V logic. For more information about our DRV8880 stepper motor driver carrier, please see its product page.

New products: APA102C-based addressable RGB LED panels

Posted by David on 31 March 2016
Tags: new products
New products: APA102C-based addressable RGB LED panels

We’re excited to offer a series of APA102C-based addressable RGB LED panels, which make it easy to add colorful images, text, or lighting effects to your project. These panels use the same integrated APA102C LED driver as our APA102C-based addressable RGB LED strips, which means that you can control the LEDs using a standard SPI interface that works over a wide range of communication rates.

We offer APA102C LED panels in three different sizes:

For more information about our APA102C-based LED panels, including links to example code, see their product pages.

Addressable RGB 8×32-LED Flexible Panel, 5V, 10mm Grid (APA102C) showing an animated rainbow.

An addressable RGB 16×16-LED panel with a plastic diffuser (not included) showing the Pololu logo.

New product: Pololu USB AVR Programmer v2

Posted by David on 4 March 2016
Tags: new products
New product: Pololu USB AVR Programmer v2

I am excited to announce the release of the Pololu USB AVR Programmer v2, a programmer for the popular AVR microcontrollers from Atmel.

Here at Pololu, we have been making AVR programmers for over eight years in order to support products like our Orangutan robot controllers and the 3pi robot. These programmers are used to transfer a compiled AVR program from your computer to the target AVR’s flash memory, allowing it to run the program.

From left to right: the original Orangutan USB Programmer, the Pololu USB AVR Programmer, and the Pololu USB AVR Programmer v2.

The new Pololu USB AVR Programmer v2 is our third-generation AVR programmer. It is an updated version of our Pololu USB AVR Programmer (product #1300) with many improvements and changes.

To support programming AVR microcontrollers running at 3.3 V, we added an adjustable voltage regulator that allows the programmer to set its own power voltage to either 3.3 V or 5 V. By default, the programmer will operate at 3.3 V, but it measures the voltage on its VCC pin and will automatically switch to 5 V if it detects a high-enough voltage on VCC. You can also disable the automatic switching and just set the programmer to always be 3.3 V or always be 5 V using our configuration software.

With the Pololu USB AVR Programmer v2, we made an effort to increase the programming speed for commonly-used types of AVRs, such as the ATmega328P. With the older Pololu USB AVR Programmer, if you wanted to program all 32 KB of the AVR’s flash memory, it would take about 6.8 s using the maximum ISP frequency of 2 MHz. With the Pololu USB AVR Programmer v2, it takes only about 4.8 s to do the same thing. Also, if your ATmega328P has a high-enough clock speed, you can increase the ISP frequency to 3 MHz and then it would only take 4.3 s. (These numbers are from tests done using AVRDUDE 6.2 in Windows.)

The Pololu USB AVR Programmer v2 has 470 Ω resistors on all of its I/O lines, which will help protect the programmer and your target system from damage in case there is a voltage mismatch or a short circuit.

Programming the fuse bits on an AVR has always been scary because you can accidentally program the wrong clock settings and brick your AVR. With the new Pololu USB AVR Programmer v2, it is a little less scary: the programmer provides a 100 kHz clock output that can be used to send a clock signal to your AVR, which can help you revive it when it has the wrong clock settings. We tested this on the ATmega328P and it probably works on many other AVRs as well. You should still be careful when setting the fuse bits though!

Like its predecessor, the Pololu USB AVR Programmer v2 can act as a USB-to-TTL serial adapter, so you can use it to debug or communicate with your projects over serial. We arranged the serial pins in a more standard arrangement that is similar to commonly-available FTDI USB-to-serial cables and breakout boards. The pins also come with a female header soldered in, so you can plug the programmer directly into a variety of Arduino boards and use it upload sketches via a serial bootloader.

The Pololu USB AVR Programmer v2 is compatible with commonly-used AVR programming software such as Atmel Studio, AVRDUDE, and the Arduino software (IDE).

You can use our open source configuration software for Windows, Linux, and Mac OS X, to change the configuration of your programmer and see useful information about it. We provide both a graphical user interface (GUI) and a command-line interface (CLI). Here is a screenshot of the GUI in Windows:

The Pololu USB AVR Programmer v2 Configuration Utility in Windows 10.

The Pololu USB AVR Programmer v2 uses a relatively new PIC microcontroller, the PIC1825K50. We sell a user-programmable break-out board for this microcontroller called the P-Star 25K50 Micro. One of the exciting features of this microcontroller is that it can do full-speed USB without needing an external crystal or resonator. The USB specification requires devices to have a clock that is accurate to within ±0.25%. On previous products, we usually had to add an external resonator or crystal to the board to meet this requirement. However, the PIC18F25K50 has a neat feature called Active Clock Tuning, which means that it can automatically tune its internal oscillator by monitoring the timing of the USB signals from the computer. This allows the internal oscillator, which is normally not very accurate, to achieve the accuracy needed for USB. This feature allowed us to make the programmer a little smaller and a little less expensive.

For more information, see the Pololu USB AVR Programmer v2 product page.

New products: G2 High-Power Motor Driver 18v25 and 24v21 (and price drops for other G2 drivers)

Posted by Kevin on 3 March 2016
New products: G2 High-Power Motor Driver 18v25 and 24v21 (and price drops for other G2 drivers)

Our second-generation family of high-power motor drivers continues to grow with the release of our G2 High-Power Motor Driver 18v25 and G2 High-Power Motor Driver 24v21, discrete MOSFET H-bridges that can supply a brushed DC motor with up to 25 A of continuous current at up to 30 V or up to 21 A of current at up to 40 V, respectively. In addition, we’ve lowered the prices of the 18v17 and 24v13 versions to make them even more affordable.

The new G2 18v25 and G2 24v21 drivers’ double-sided design allows them to retain the same board dimensions as their 18v17 and 24v13 siblings, even though they can deliver significantly more power. The G2 drivers are half an inch shorter and can handle the same (or slightly more) current compared to the original 18v25 and 24v20 they are designed to replace, and they are less than half the size of the original 18v25 CS and 24v23 CS while offering basic current sensing functionality that can eliminate the need for a dedicated current sensor in some applications. As with previous G2 drivers, they also include reverse-voltage protection and a current limiting feature.

Pololu G2 High-Power Motor Driver 24v21 next to original high-power motor driver 24v20 and 24v23 CS.
Pololu G2 High-Power Motor Driver 24v21 and 24v13.

For more information about the G2 motor drivers, see their product pages at the links below.

New product: A-Star 32U4 Robot Controller SV with Raspberry Pi Bridge

Posted by Kevin on 5 February 2016
New product: A-Star 32U4 Robot Controller SV with Raspberry Pi Bridge

Our A-Star 32U4 Robot Controller SV with Raspberry Pi Bridge is now available, joining the LV version we released six months ago.

Similar to its lower-voltage sibling, the Robot Controller SV is a general-purpose robot controller that includes dual motor drivers and other useful peripherals like pushbuttons and a buzzer. It also has the same level shifters and power circuit that allow it to easily power and communicate with a Raspberry Pi when mounted as an auxiliary controller. Like our other A-Star controllers, the A-Star Robot Controller SV built around an ATmega32U4 microcontroller and ships preloaded with an Arduino-compatible USB bootloader.

This SV version of the A-Star Robot Controller uses an efficient step-down switching regulator, enabling it to operate (and optionally supply power to an attached Raspberry Pi) with input voltages from 5.5 V to 36 V. Compared to the LV version, the Robot Controller SV can also supply substantially more current across its wide operating voltage range:

We’ve been working on some (long-awaited) I²C software to allow the A-Star to be used as a slave controller with a Raspberry Pi master, as well as an example project that shows how to build a robot with this setup. They’re nearly ready, so watch for them on the blog in the coming weeks. But don’t forget that the A-Star board can also be used by itself as a capable robot controller, as my recent sumo robot demonstrates.

To facilitate both of these uses, the A-Star 32U4 Robot Controller SV is available either assembled for use as a Raspberry Pi add-on or in a more barebones configuration that is suitable for customized assembly or standalone use. See those product pages and the user’s guide for more information about the robot controller.

New products: MinIMU-9 and AltIMU-10 v5 IMU boards

Posted by Ben on 4 February 2016
Tags: new products
New products: MinIMU-9 and AltIMU-10 v5 IMU boards

We have released new versions of our MinIMU-9 and AltIMU-10 inertial measurement unit (IMU) modules, which use an I²C interface to provide nine independent rotation, acceleration, and magnetic measurements that can be used to calculate the sensor’s absolute orientation (the AltIMU also includes an altimeter). These v5 editions feature ST’s new LIS3MDL 3-axis magnetometer and LSM6DS33 3-axis accelerometer and gyro, which allow them to offer improved performance over previous versions at lower prices. The new versions are pin-compatible with the previous ones, though software written for older IMU versions will need to be changed to work with the v5 since the sensor ICs have changed.

We think these new boards combine the best ST MEMS sensors into compact boards at great prices. However, our older MinIMU-9 v3, AltIMU-10 v3, and AltIMU-10 v4 are still available for now at reduced clearance prices, so if you don’t absolutely need ST’s newest sensors on your IMU, these previous versions are still very good sensor boards to consider.

Here’s an updated version of our diagram showing where the new v5 modules fit in:

Evolution and release dates of Pololu carriers for ST’s MEMS sensors through January 2016.

New products: 12V 25D mm gearmotors with encoders

Posted by Ben on 13 January 2016
Tags: new products

All of our 25D mm metal gearmotors, including the newest versions with 12V motors, are now available with quadrature encoders. That’s 37 new products in all! With five different motor winding options and gear ratios available from 4.4:1 through 499:1, our total selection of 25D mm metal gearmotors has grown to nearly 100 options:

Rated
Voltage
Motor Type Stall
Current
@ Rated Voltage
No-Load
Speed
@ Rated Voltage
Approximate
Stall Torque
@ Rated Voltage


With Encoder


Without Encoder
6 V high-power
(HP)
6.5 A 10,000 RPM 5 oz-in 1:1 HP 6V w/encoder
2150 RPM 20 oz-in 4.4:1 HP 6V w/encoder 4.4:1 HP 6V
990 RPM 39 oz-in 9.7:1 HP 6V w/encoder 9.7:1 HP 6V
460 RPM 75 oz-in 20.4:1 HP 6V w/encoder 20.4:1 HP 6V
280 RPM 90 oz-in 34:1 HP 6V w/encoder 34:1 HP 6V
200 RPM 115 oz-in 47:1 HP 6V w/encoder 47:1 HP 6V
130 RPM 150 oz-in 75:1 HP 6V w/encoder 75:1 HP 6V
97 RPM 210 oz-in 99:1 HP 6V w/encoder 99:1 HP 6V
56 RPM 350 oz-in 172:1 HP 6V w/encoder 172:1 HP 6V
6 V low-power
(LP)
2.4 A 6200 RPM 2 oz-in 1:1 LP 6V w/encoder
1300 RPM 8 oz-in 4.4:1 LP 6V w/encoder 4.4:1 LP 6V
590 RPM 17 oz-in 9.7:1 LP 6V w/encoder 9.7:1 LP 6V
290 RPM 33 oz-in 20.4:1 LP 6V w/encoder 20.4:1 LP 6V
170 RPM 50 oz-in 34:1 LP 6V w/encoder 34:1 LP 6V
120 RPM 65 oz-in 47:1 LP 6V w/encoder 47:1 LP 6V
78 RPM 95 oz-in 75:1 LP 6V w/encoder 75:1 LP 6V
58 RPM 130 oz-in 99:1 LP 6V w/encoder 99:1 LP 6V
34 RPM 200 oz-in 172:1 LP 6V w/encoder 172:1 LP 6V
25 RPM 220 oz-in 227:1 LP 6V w/encoder 227:1 LP 6V
15 RPM 300 oz-in 378:1 LP 6V w/encoder 378:1 LP 6V
11 RPM 400 oz-in 499:1 LP 6V w/encoder 499:1 LP 6V
12 V high-power
(HP)
5.6 A 10,200 RPM 5.5 oz-in 1:1 HP 12V w/encoder
2250 RPM 23 oz-in 4.4:1 HP 12V w/encoder 4.4:1 HP 12V
1030 RPM 44 oz-in 9.7:1 HP 12V w/encoder 9.7:1 HP 12V
500 RPM 85 oz-in 20.4:1 HP 12V w/encoder 20.4:1 HP 12V
290 RPM 120 oz-in 34:1 HP 12V w/encoder 34:1 HP 12V
210 RPM 165 oz-in 47:1 HP 12V w/encoder 47:1 HP 12V
130 RPM 240 oz-in 75:1 HP 12V w/encoder 75:1 HP 12V
100 RPM 300 oz-in 99:1 HP 12V w/encoder 99:1 HP 12V
12 V medium-power
(MP)
2.1 A 7800 RPM 2.7 oz-in 1:1 MP 12V w/encoder
1700 RPM 11 oz-in 4.4:1 MP 12V w/encoder 4.4:1 MP 12V
770 RPM 22 oz-in 9.7:1 MP 12V w/encoder 9.7:1 MP 12V
370 RPM 42 oz-in 20.4:1 MP 12V w/encoder 20.4:1 MP 12V
220 RPM 63 oz-in 34:1 MP 12V w/encoder 34:1 MP 12V
160 RPM 85 oz-in 47:1 MP 12V w/encoder 47:1 MP 12V
100 RPM 125 oz-in 75:1 MP 12V w/encoder 75:1 MP 12V
76 RPM 165 oz-in 99:1 MP 12V w/encoder 99:1 MP 12V
43 RPM 250 oz-in 172:1 MP 12V w/encoder 172:1 MP 12V
33 RPM 320 oz-in 227:1 MP 12V w/encoder 227:1 MP 12V
12 V low-power
(LP)
1.1 A 5600 RPM 2 oz-in 1:1 LP 12V w/encoder
1200 RPM 8 oz-in 4.4:1 LP 12V w/encoder 4.4:1 LP 12V
560 RPM 15 oz-in 9.7:1 LP 12V w/encoder 9.7:1 LP 12V
260 RPM 29 oz-in 20.4:1 LP 12V w/encoder 20.4:1 LP 12V
150 RPM 43 oz-in 34:1 LP 12V w/encoder 34:1 LP 12V
110 RPM 60 oz-in 47:1 LP 12V w/encoder 47:1 LP 12V
71 RPM 85 oz-in 75:1 LP 12V w/encoder 75:1 LP 12V
55 RPM 115 oz-in 99:1 LP 12V w/encoder 99:1 LP 12V
31 RPM 180 oz-in 172:1 LP 12V w/encoder 172:1 LP 12V
23 RPM 240 oz-in 227:1 LP 12V w/encoder 227:1 LP 12V
14 RPM 320 oz-in 378:1 LP 12V w/encoder 378:1 LP 12V

New Products

5:1 Micro Metal Gearmotor HPCB
Pololu USB AVR Programmer v2
Addressable RGB 16x16-LED Flexible Panel, 5V, 10mm Grid (APA102C)
Addressable RGB 8x8-LED Flexible Panel, 5V, 10mm Grid (APA102C)
5:1 Micro Metal Gearmotor MP with Extended Motor Shaft
Addressable RGB 8x32-LED Flexible Panel, 5V, 10mm Grid (APA102C)
Pololu G2 High-Power Motor Driver 18v25
700:1 Sub-Micro Plastic Planetary Gearmotor 6Dx21L mm
Wixel Shield for Arduino, v1.1
210:1 Micro Metal Gearmotor MP with Extended Motor Shaft
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