Hacked Gadgets Forum

May 16, 2014

Black and Decker Gyro Screwdriver Teardown

at 6:56 am. Filed under Teardown

Black and Decker  Gyro_7863

 

Thanks to Black and Decker for sending in this Gyro Screwdriver for review, you can see the review here. In this article we are going to tear into it and see what we have on the inside. Opening the unit was very simple since there are just 5 phillips screws holding the unit together, unfortunately the screws come in 2 different sizes (these go into the handle of the screwdriver). You will definitely visibly void your warranty by cracking it open since you need to cut through the sticker at the bottom of the screwdriver. The battery and circuit board are press fit into one half of the housing and all connection on the PCB have are connectorized which is quite nice. Looks like they wanted to keep it as modular as possible so they could service it easily. The microcontroller is an Atmel XMEGA16D4, it has 16K of flash and 34 IO pins. The position sensing is done with an Invernsense ISZ-650, this is a dual axis gyroscope. The 4 devices at the bottom of the rear of the board by the battery jack turned out to be 4899NF Power Mosfets, since there are 4 of them I am thinking that they are configured as an H-Bridge to run the motor.

 

I think this device would make for a great remote operated motor for some DIY projects like a wire winder. You could mount the motor to the winding drum and mount the drill to anything. I am thinking one of those old ship speed controls.

Click here to see the review of the Black and Decker Gyro Screwdriver. For full sized images please see them here.

 

 


 

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6 Responses to “Black and Decker Gyro Screwdriver Teardown”

  1. Jerome Demers Says:

    The 16 pin SOIC is the ISL83202 (55V, 1A Peak Current H-Bridge FET Driver) and those 4 mosfet are indeed forming a h-bridge.
    http://www.icbase.com/File/PDF/INT/INT09201401.pdf

    I am suprise to see that they use a h-bridge driver. They could of run that directly off a specific microcontroller. You select your mosfet accordingly and save some money by removing a component.

    Maybe the “mjad s06a” is actually a LM2621 (Low Input Voltage, Step-Up DC-DC Converter) From the layout of the PCB, the components and the schematic, it look like a match.
    http://www.ti.com.cn/cn/lit/ds/symlink/lm2621.pdf

    Thanks for the teardown, I love those because you learn a lot!

  2. Black and Decker Gyro screwdriver teardown | PCB공유.COM Says:

    […] Alan Parekh of Hacked Gadgets writes: […]

  3. Atmel powers Black & Decker Gyro Screwdriver

 | Bits & Pieces from the Embedded Design World Says:

    […] recent teardown by the Hacked Gadgets crew confirms that Black & Decker’s Gryo Screwdriver is powered by Atmel’s ATxmega16D4 […]

  4. Massimo Says:

    hello, i need the mother board, where can i find it? My gyro doesn’t work.

  5. Massimo Says:

    hello, i need the mother board, where can i find it? My gyro doesn’t work, it turns only to right

  6. Alan Parekh Says:

    I think you are out of luck with the mother board. If it is under warranty that would be the only way I think.

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