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The right sensor to measure acceleration?

Former Member

Hello Everyone and ADVthanksANCE for any input you have.

 

I'm looking for the proper sensor to measure the acceleration of a frisbee. I will be mounting it to the bottom of a frisbee on a PCB I design utilizing most likely an ATMEL AVR microcontroller. I'm in the early design stages so don't have many answers nor are there many requirements decided on. I plan on drilling holes into a frisbee and placing LED's strategically. The LED's I wan't to light up based on the measured acceleration. The faster the frisbee travels or the spin measured, the more lit up it will be. Cost is certainly a consideration since the project is a playtoy and an opportunity to learn from. It won't be marketed nor is it something I plan on showing off to anyone other than my buddy's at night trying to play catch in the dark. I'm trying to figure out the proper sensor to use in this case.

 

Thanks again,

 

Matthew

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    I believe that a Gyro sensor would be definitly better to measure the rotation of a frisbee than an accelerometer but it is much more expensive image

    If cost is a constraint (you never know, may be your luminous frisbee will be the toy of the summer 2013 and be sold millions units), I would recommend to consider Freescale MMAxxxx or ST LIS3xxxx accelerometer, which are cheaper image

      

    May be you could start prototyping just with the Freescale ZSTAR3 reference design demonstrating Freescale accelerometers, Zigbee radio solutions and 8-bit S08 MCU family.

    This demo is based on two boards :

    - a standalone battery powered board featuring the accelerometer and a System on Chip embedding the radio transceiver and an 8-bit MCU from the Freescale S08 family (MC13213) that you could stick on the frisbee to measure the acceleration

    - an USB dongle featuring a radio transceiver (MC13191) and an 8-bit MCU embedding an USB device controller (MC9S08JW).

    Sensor board is available in two versions : based on a digital accelerometer MMA7455 or based on an analog accelerometer MMA7660 (higher bandwith but need a good ADC in the mcu) ?

      

    Sensor board RD3172MMA7455LRD3172MMA7455L is sold in Farnell store and costs less than 40£

        

    imageimage

         

       

    Another alternative could be to acquire a Freescale Freedom board based on a newer MCU from the Kinetis family (ARM Cortex-M core) as they all embeds the digital accelerometer Freescale MMA8455.

    I would recommend you the FRDM-KL05ZFRDM-KL05Z sold down to 8£ by Farnell UK, which is based on a small Kinetis-L mcu (ARM Cortex-M0+) : the MKL05Z32VFM4 with 32KB of flash in QFN32 package.

       

    image

          

    Every Freedom boards (FRDM-KL25Z, FRDM-KL05Z, FRDM-K20D50M) embeds an innovative multimode debugger (OpenSDA) so you don't need to invest in an expensive probe to program, debug your project.

    Freescale Codewarrior is a free developpement suite for Freescale MCUs and the Special edition allow you to compile for free up to 64KB of code for a Kinetis-L (ARM Cortex-M0+) target and 128KB of code for a Kinetis-K (ARM Cortex-M4) target. Processor Expert (included in Codewarrior) might be very helpfull if you are not familiar with Freescale MCUs or development tool. It is a code generator tool with prebuild components.

    Every Freedom boards are compatible with Arduino shields so you could simply associate it with a LED driver Arduino shield like in the following demo based on a HL1606 driver chip found HERE

    If you are interested in more information concerning the Freedom development platform, looking for tutorials or project examples (like how program the Kinetis-L05 to drive an RGB LED based on the Accelerometer measurements), I would definitly recommend you this dedicated section in the Knode

      

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  • 0

    I believe that a Gyro sensor would be definitly better to measure the rotation of a frisbee than an accelerometer but it is much more expensive image

    If cost is a constraint (you never know, may be your luminous frisbee will be the toy of the summer 2013 and be sold millions units), I would recommend to consider Freescale MMAxxxx or ST LIS3xxxx accelerometer, which are cheaper image

      

    May be you could start prototyping just with the Freescale ZSTAR3 reference design demonstrating Freescale accelerometers, Zigbee radio solutions and 8-bit S08 MCU family.

    This demo is based on two boards :

    - a standalone battery powered board featuring the accelerometer and a System on Chip embedding the radio transceiver and an 8-bit MCU from the Freescale S08 family (MC13213) that you could stick on the frisbee to measure the acceleration

    - an USB dongle featuring a radio transceiver (MC13191) and an 8-bit MCU embedding an USB device controller (MC9S08JW).

    Sensor board is available in two versions : based on a digital accelerometer MMA7455 or based on an analog accelerometer MMA7660 (higher bandwith but need a good ADC in the mcu) ?

      

    Sensor board RD3172MMA7455LRD3172MMA7455L is sold in Farnell store and costs less than 40£

        

    imageimage

         

       

    Another alternative could be to acquire a Freescale Freedom board based on a newer MCU from the Kinetis family (ARM Cortex-M core) as they all embeds the digital accelerometer Freescale MMA8455.

    I would recommend you the FRDM-KL05ZFRDM-KL05Z sold down to 8£ by Farnell UK, which is based on a small Kinetis-L mcu (ARM Cortex-M0+) : the MKL05Z32VFM4 with 32KB of flash in QFN32 package.

       

    image

          

    Every Freedom boards (FRDM-KL25Z, FRDM-KL05Z, FRDM-K20D50M) embeds an innovative multimode debugger (OpenSDA) so you don't need to invest in an expensive probe to program, debug your project.

    Freescale Codewarrior is a free developpement suite for Freescale MCUs and the Special edition allow you to compile for free up to 64KB of code for a Kinetis-L (ARM Cortex-M0+) target and 128KB of code for a Kinetis-K (ARM Cortex-M4) target. Processor Expert (included in Codewarrior) might be very helpfull if you are not familiar with Freescale MCUs or development tool. It is a code generator tool with prebuild components.

    Every Freedom boards are compatible with Arduino shields so you could simply associate it with a LED driver Arduino shield like in the following demo based on a HL1606 driver chip found HERE

    If you are interested in more information concerning the Freedom development platform, looking for tutorials or project examples (like how program the Kinetis-L05 to drive an RGB LED based on the Accelerometer measurements), I would definitly recommend you this dedicated section in the Knode

      

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