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userhead robvoi
Replies （20）
  • Topic: how much power need an Arduino?
    You Reply: A breadboard powersupply may do the job. 1.5$ on ebay and no soldering.
  • Topic: SPI on Romeo all-in-one V1 vs. V1.1
    You Reply: No. I only have the nrf24L01. And for my next two projects I don't need any other SPI device ;-)
  • Topic: SPI on Romeo all-in-one V1 vs. V1.1
    You Reply: Hey Lauren,

    thanks for testing. I don't think that the board works with one SPI device but not with the other.
    I expect my board to be defect then.

    Unfortunately the second one.

    Robert
  • Topic: SPI on Romeo all-in-one V1 vs. V1.1
    You Reply: Hi,

    no, didn't find a reason. I bought a Arduino Nano - no problem.

    On the Uno all pins work fine as in/out pins. Not sure how to further test the V1.1 version.
    Can you test a V1.1 all-in-one with a SPI device? At least I don't have a second one to exclude a hardware failure. :-)

    Robert
  • Topic: SPI on Romeo all-in-one V1 vs. V1.1
    You Reply: I don't have an UNO board to test it with. I'll receive a DF-Nano tomorrow and will test it with it.
    Not that the results would explain something ...

    Still it is strange. I have no other problems with the board. So I don't think it is defect.
  • Topic: Servos on Romeo Board
    You Reply: Thanks for the info.

    Robert
  • Topic: Servos on Romeo Board
    You Reply: Thanks for the info.

    Robert
  • Topic: Servos on Romeo Board
    You Reply: Not sure. I want to power 10 of these cheap blue 9g Servos. I expect 100-150 mA per Servo at peak.
    So 1.5 A total.

    Robert
  • Topic: Servos on Romeo Board
    You Reply: Not sure. I want to power 10 of these cheap blue 9g Servos. I expect 100-150 mA per Servo at peak.
    So 1.5 A total.

    Robert
  • Topic: Servos on Romeo Board
    You Reply: HI Hector,

    what I meant is: what is the max current allowed per pin?

    Thanks
    Robert
  • Topic: Servos on Romeo Board
    You Reply: HI Hector,

    what I meant is: what is the max current allowed per pin?

    Thanks
    Robert
  • Topic: Servos on Romeo Board
    You Reply: Thanks a lot Hector.
    5V is enough. What about the current? How high can it be per pin using
    1. the motor power regulation
    2. unregulated power

    Thanks
    Robert
  • Topic: Servos on Romeo Board
    You Reply: Thanks a lot Hector.
    5V is enough. What about the current? How high can it be per pin using
    1. the motor power regulation
    2. unregulated power

    Thanks
    Robert
  • Topic: Servos on Romeo Board
    You Reply: Hi,

    two questions about powering servos on the romeo board.

    1. Can I power (10) Servos via the Motor power in? (so I can use the power regulation)
    2. Using the Servo power in: which pins get powered with the unregulated power?

    Thanks
    Robert
  • Topic: Change baud rate of Bluetooth V3 using Arduino board
    You Reply: Hi Hector,

    I have a Romeo board. So option 2 doesn't work.
    Do you think it works with soft serial? (is it normal serial communication at all?)

    Do you have any chance to test it? I think a lot of Bluetooth Module V3 owners would be glad about it.

    Thanks
    Robert
  • Topic: Servo shakes when URM37 scans
    You Reply: Hi Hector,

    thanks a lot for the smaples! I'll check it out later today.
    Can the PWM mode also be used the same way in Mode 3 with the trigger?

    Thanks
    Robert
  • Topic: Servo shakes when URM37 scans
    You Reply: Hi Hector,

    thanks a lot for the smaples! I'll check it out later today.
    Can the PWM mode also be used the same way in Mode 3 with the trigger?

    Thanks
    Robert
  • Topic: Servo shakes when URM37 scans
    You Reply: Hi Hector,

    thanks a lot. THat's great.
    By the way - a workaround for the problem with the shaking servos is to use a digital pin which is connected to a different timer. With me, SoftwareSerial influences pin 8. Pin 9 works fine.
    Nevertheless, using PWM would be nice to free a digital pin. And just in case you have more servos in use.

    Regards,
    Robert
  • Topic: Servo shakes when URM37 scans
    You Reply: Hi Hector,

    thanks a lot. THat's great.
    By the way - a workaround for the problem with the shaking servos is to use a digital pin which is connected to a different timer. With me, SoftwareSerial influences pin 8. Pin 9 works fine.
    Nevertheless, using PWM would be nice to free a digital pin. And just in case you have more servos in use.

    Regards,
    Robert
  • Topic: Servo shakes when URM37 scans
    You Reply: OK. I found that the problem is most likely caused by the SoftSerial library (taking interrupts and interfering with the servo library). Because of this I would like to interface the URM37 via PWM.
    There seemed to be some example code on yerobot.com . But the site is down.

    Does someone have example code for the PWM mode? All I found is for serial communication.

    Thanks
    Robert