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  • Drok
    Keymaster
    April 22, 2016 at 2:27 am
    Post count: 2971
    in reply to: LM2577 Stability #4511

    Hello Neil Harmon,
    Thank you for your message.
    Sorry for the inconvenience caused on you.
    Could you please send us an email(service at droking dot com) to tell us your order ID or the link of the product and more details of how you operate the product, such as wiring, the load, the working environment?
    If you can, we sincerely hope that you can send us some images or video to let us check the problem details.
    With your help, we can find a solution more quickly.
    Waiting for your reply.
    Best regards

    Drok
    Keymaster
    April 21, 2016 at 4:07 am
    Post count: 2971
    in reply to: DROKreg; Mini Bluetooth 30W amp – how to change BT name? #4470

    Hello Eric Roesler,
    Flash the firmware can change the BT name.
    please download the Firmware_180003 from dropbox.
    please manipulate following this image.
    image1
    image2
    and then,click ” 确定 “.
    lastly, please find a USB cable and connection, the fireware will automatic upgrade.
    hope this will help you.

    best regards

    Drok
    Keymaster
    April 21, 2016 at 2:23 am
    Post count: 2971
    in reply to: DROK® LM2596 #4466

    Hello Juan,
    Thank you for your message.
    The attached PDF file is the Datasheet of the product.
    DATASHEET_090029
    Hope this can help you.
    Best regards

    Drok
    Keymaster
    April 21, 2016 at 2:08 am
    Post count: 2971
    in reply to: See below. #4464

    Hello Tom Campbell,
    Thank you for writing in.
    So sorry for the inconvenience caused on you.
    Could you please send us an email (service at droking dot com) to tell us more details of how you operate the product, such as the input current, the wiring , the working environment?
    If you can, we sincerely hope that you can send us some images or video to let us check the problem detail.
    With your help, we can find a solution more quickly.
    Waiting for your reply.
    Best regards

    Drok
    Keymaster
    April 21, 2016 at 1:59 am
    Post count: 2971
    in reply to: Manual for model "J7-B/C/D"? #4463

    Hello JN,
    Thank you for your message.
    Sorry for the inconvenience caused on you.
    The attached PDF file is the Instruction of the product.
    Instruction_200180
    Hope this can help you.
    Best regards

    Drok
    Keymaster
    April 21, 2016 at 1:57 am
    Post count: 2971
    in reply to: OLED USB Tester #4462

    Hello almoore,
    Thank you for your message and appreciation for our product.
    Could you please tell us your order ID or the link of the product?
    With your help, we can find a solution more quickly.
    Waiting for your reply.
    Best regards

    Drok
    Keymaster
    April 20, 2016 at 8:47 am
    Post count: 2971
    in reply to: How to adjust Voltage ? Mini-DC-Boost-Converter 2.5-6V to 4-12V DC-DC Step Up #4447

    Hello Kai,
    Thank you for your quick reply and valuable suggestion.
    The function of the two resistors is adjusting the output voltage.
    If you need to adjust the voltage, you need to adjust the fixed resistor.
    The ratio of the two resistors is the value of the output voltage which is mentioned in the image we sent to you before.
    You can also use a adjustable potentiometer to adjust the voltage.
    Please remove the original resistor and weld the pins of a adjustable resistor to the pins of the original resistors.
    Please note that the value of the adjustable resistor should be higher than the two original resistors(R1:88K, R2:12K).
    Hope this can help you.
    Best regards

    Drok
    Keymaster
    April 20, 2016 at 1:31 am
    Post count: 2971
    in reply to: DROK®Micro LED DC-DC Digital Boost Voltage Converter LM2577 3-34V to 4-35V 5V/12 #4432

    Hello Jose,
    Thank you for writing in.
    This product is a DC-DC boost converter with voltage display.
    So sorry that we are not sure what is the temperature range you are looking for?
    Could you please tell us more details?
    And here the PDF file is the Datasheet of the product.
    DATASHEET_300001
    Hope this can help you.
    Best regards

    Drok
    Keymaster
    April 19, 2016 at 2:35 am
    Post count: 2971
    in reply to: DC Digital Multimeter Advice #4411

    Hello James Long,
    Thank you for your quick reply.
    You can install it to monitor a battery in a class C.
    Please note that parameters of the battery should be in the range of the working/measuring range of the meter.
    Hope this can help you.
    Best regards

    Drok
    Keymaster
    April 19, 2016 at 2:13 am
    Post count: 2971
    in reply to: How to adjust Voltage ? Mini-DC-Boost-Converter 2.5-6V to 4-12V DC-DC Step Up #4410

    Hello Kai,
    Thank you for writing in.
    Here is the image that we think is useful to you.
    Adjust the output voltage
    Hope this can help you.
    If you have any questions, please feel free to contact us.
    Best regards

    Drok
    Keymaster
    April 18, 2016 at 6:07 am
    Post count: 2971
    in reply to: Display skin software for USB volume controller #4395

    Hello Neil Garside,
    You’re welcome.
    If you have any questions,please feel free to contact us.
    Best regards

    Drok
    Keymaster
    April 18, 2016 at 4:23 am
    Post count: 2971
    in reply to: TA2024B Amplifier board #4393

    Hello Gabriel A.,
    Thank you for writing in.
    Could you please tell us your order ID or the link of the product you bought?
    With your help, we can find a solution more quickly.
    Waiting for your reply.
    Best regards

    Drok
    Keymaster
    April 18, 2016 at 4:20 am
    Post count: 2971
    in reply to: DC Digital Multimeter Advice #4392

    Hello James Long,
    Thank you for writing in.
    So sorry that we cannot find out the your order ID.
    Please check it again or you can also tell us the link of the product you bought.
    With your help, we can find a solution more quickly.
    Best regards

    Drok
    Keymaster
    April 18, 2016 at 4:18 am
    Post count: 2971
    in reply to: Application question for Micro ac 4000W Regulator #4391

    Hello Burt Trattner,
    Thank you for writing in.
    The product is not suitable for your application.
    This product is used for adjusting the voltage which means that it cannot used to step up voltage.
    Hope this can help you.
    Best regards

    Drok
    Keymaster
    April 18, 2016 at 3:42 am
    Post count: 2971
    in reply to: Instructions for Light Control Sensor #4384

    Hello Jerry,
    Thank you for writing in.
    Please check the attach image, you can adjust the light sensitivity by adjusting the potentiometer which is marked by yellow circle.
    090221
    Theoretically, you can use one of this product and one of DEOK DC 5-12V Light Control Sensor Switch Day On Night Off Automatic Adjustable to trigger the motor (the motor should have positive and negative poles).
    However, this product is not really suitable for this application. If work at the same time, the motor may be burnt.
    Hope this can help you.
    Best regards

  • Author
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Viewing 15 posts - 2,656 through 2,670 (of 2,965 total)
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