Comments by Jon

  • Jon's line following robot: Usain Volt 2.0

    Jon's line following robot: Usain Volt 2.0

    - 9 December 2015

    Hello, Richard.

    Sure, I can share those files with you; I'll make them accessible via Thingiverse. However, this is my first time uploading and publishing a creation on Thingiverse, and they require a minimum wait time of 24 hours between account creation and publishing your first creation. For now, I was able to prepare and save a web page that they will be available at, so when it is published (by about this time tomorrow), I expect that you should be able to use this link to access those files.

    As for your laser-cutting question, I am not sure about the least expensive way to get those pieces cut, but you could use our laser-cutting service (and you can ask them specific questions about laser-cutting, too.).

    -Jon

  • New product: G2 High-Power Motor Driver 24v13

    New product: G2 High-Power Motor Driver 24v13

    - 3 December 2015

    Hello, Matija.

    All of our High-Power Motor Drivers, including this one, were discounted during our Black Friday sale. The sale is now over, and the offers are no longer available.

    -Jon

  • 37D mm metal gearmotors with encoders and end caps

    37D mm metal gearmotors with encoders and end caps

    - 4 November 2015

    Hello.

    Unfortunately, the end caps only work with these new versions of our 37D mm metal gearmotors, which come with a special, pre-installed black plastic ring at the base of the motor that the end cap mounts to. There is no way to use these end caps with the older versions of our 37D mm metal gearmotors with encoders.

    -Jon

  • New revision of the Dual VNH5019 motor driver shield for Arduino

    New revision of the Dual VNH5019 motor driver shield for Arduino

    - 22 September 2015

    Hello, Lew.

    The VNH5019 shield does not work directly with brushless motors. We are not very familiar with SPAL motors, so we are not sure what kind of included circuitry they have. You might ask their manufacturer or someone more familiar with them to see what control solutions they recommend. Alternatively, if you show us some documentation (e.g. a datasheet) for your motors, we might be able to give you a more helpful answer.

    -Jon

  • New products: Pololu Carriers with Sharp GP2Y0A60SZLF Analog Distance Sensor 10-150cm

    New products: Pololu Carriers with Sharp GP2Y0A60SZLF Analog Distance Sensor 10-150cm

    - 31 August 2015

    All of the information we have available for those sensors can be found on their product pages, or inside their datasheets. So, everything we know about the Sharp sensor's timing can be found inside its datasheet. In particular, there is a Timing Chart on page 5 of the datasheet, but it looks like it does not help you answer your questions about exactly when this pulse occurs and for how long. For that, you might consider getting one and looking at it with an oscilloscope to try to better characterize it.

    The schematic for that sensor's carrier board can be found on its product page. There is a 10k pull-up resistor on the EN pin. You can also see in the schematic that we label the Sharp sensor's VCTRL pin as EN, which should make it easier to understand the Timing Chart and see how the sensor responds to its EN pin being toggled.

    By the way, if you have many detailed questions about one of the sensors we carry, we prefer to that you start a thread on our forum, which is a better venue to search through, and start a discussion on details like the ones you asked about.

    -Jon

  • New products: Pololu Carriers with Sharp GP2Y0A60SZLF Analog Distance Sensor 10-150cm

    New products: Pololu Carriers with Sharp GP2Y0A60SZLF Analog Distance Sensor 10-150cm

    - 28 August 2015

    We do not expect those sensors to work well with a source that cannot supply the amount of current they need to draw when they pulse. In general, if you do not follow the specifications for electronics, you should not expect them to work reliably.

    However, in this particular case (since your supply can output close to the current the sensor wants to draw) if you cannot use a source that can provide more current, you could probably still use the sensor with a large capacitor (>10 uF) between power and ground near the sensor board.

    -Jon

  • New products: Pololu Carriers with Sharp GP2Y0A60SZLF Analog Distance Sensor 10-150cm

    New products: Pololu Carriers with Sharp GP2Y0A60SZLF Analog Distance Sensor 10-150cm

    - 27 August 2015

    Hello.

    Like the datasheet says, those Sharp distance sensors draw current in bursts. So, when supplied power, the sensor will draw some nominal amount of current until the LED is pulsed and the current drawn increases to more than 300mA briefly. After the pulse, the current decreases again to the nominal amount. The average current draw of the sensor (which is the average of the nominal and pulse currents) is, like you noticed, described as typically 33mA, and at max a value of 50mA. The carrier board does not add hardware that changes this current draw noticeably.

    -Jon

  • New products: Scooter wheel adapters

    New products: Scooter wheel adapters

    - 24 August 2015

    Hello, Larry.

    Thanks for the feedback and video of Zippy; we love seeing our products in action! I think its especially neat that you opted for a pair of scooter wheels (and adapters) instead of the wheels that the Balanduino uses (which I think are Banebots wheels).

    -Jon

  • New product: Sharp 15cm GP2Y0D815Z0F digital distance sensor

    New product: Sharp 15cm GP2Y0D815Z0F digital distance sensor

    - 18 August 2015

    Hello.

    Congratulations on winning that tournament!

    A few of us here are using the 15cm Sharp sensors on our mini-sumo robots, and they do not seem to be noticeably better or worse than the 10cm versions at detecting objects that do not reflect IR very well. If you want to look into this more, can you post the details of how you are using and comparing the two sensors on our forum ?

    -Jon

  • New product: CH Robotics UM7-LT orientation sensor

    New product: CH Robotics UM7-LT orientation sensor

    - 28 July 2015

    Hello, nihuyaka.

    We do not know the details of how the firmware for the UM7-LT was developed. You might try contacting the manufacturer, CH Robotics, to learn more about that.

    -Jon

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