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Trinket Pedometer

Connect a Trinket PRO to a pedometer help burn off the extra pounds.

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Finding the fit bands a little too pricey ? How about mating a pedometer to a trinkit pro ? One digital input to count the steps, one for reset , one for start and a uUSB port to download the counts, and that should do it. What would be really cool is find a bluetooth shield for the pro. I have not
done any builds in a while. Wish me luck in finishing in time !!!
  • 1 × Trinket pro
  • 1 × Pedometer with belt clip
  • 1 × 3.3v Battery
  • 1 × Busted USB WiFI adapter case with usb "A" connector

  • Prototype

    pcdocms09/05/2017 at 04:40 0 comments

    Here is the prototype , including how it will fit in a standard usb dock and how one wears it like a regular pedometer.  The user will leave it charging in dock until they are ready for a walk .  They then attach it  to their belt, go walking, and place it in the dock when done. The TP will download its data to software on the PC that will calculate the stats of the walk.

  • My Solution for the challenges

    pcdocms09/05/2017 at 03:10 0 comments

    Note TP = " Trinket Pedometer "

    This biggest challenges for the project are :

    1) How do I keep the size small and at the same time keep it functional as a regular pedometer ?  ( The last thing I want is a huge box hanging off my belt loop

    I will use an old dead  WiFI adapter  housing and connector for the Trinket's housing
    and data collection

    2) How do I power/recharge the dang thing ?

    Using the old USB-A male connector, I will use this  for both data collection and power -  When I plug

    the device in the usb dock pictured in future future diagrams included with this blog, it will charge the batteries every time   and download data from the TP simultaneously . A VB program will

    collect and store data from current walks from memory stored in the TP

    I want to use small batteries but at the same time have enough charge for a 5 mile walk

    at 3 to 5 mi/hr

    I have decided to use a Li-ion  cordless phone battery to power the device.  I figure if the

    talk time on my cordless handset is about 2 hours, this will more than enough walk time for

    the TP 



    3) How do I upload data from the device ? Do I want wired or wireless data transfer  ?

    See the above regarding the USB connector scavenged from the busted WiFI

    adapter.

    4) How do keep it inexpensive to build  ( if it is going to cost more than the a FitBit,

    what's is the point, right ?? ).  I want to use stuff I  can find around the house.

    These are my expenses so far :

    Digital Pedometer - $1

    Cordless phone battery - Donation - $0

    Busted WiFi Adapter - Donation -$0

    Adafruit -Trinket  Pro  -$10

    Construction time - Donated - 0$

    Total cost - $11


    Cheapest Fitbit at Walmart - $60

    (I think I'm good with the price )




    ( more to come in the next blog )

  • Challenges for this project

    pcdocms09/05/2017 at 02:35 0 comments

    This biggest challenges for the project are :

    1) How do I keep the size small and at the same time keep it functional as a regular pedometer ?  ( The last thing I want is a huge box hanging off my belt loop

    2) How do I power/recharge the dang thing ?

    I want to use small batteries but at the same time have enough charge for a 5 mile walk

    at 3 to 5 mi/hr

    3) How do I upload data from the device . Do I want wired data or wireless ?

    4) How do keep it inexpensive to build  ( if it is going to cost more than the a FitBit,

    what's is the point, right ?? ).  I want to use stuff I  can find around the house.

    ( more to come in the next blog )

View all 3 project logs

  • 1
    Step 1

    The prototype for the TP is a rather simple build, as it is a work in progress.  The Trinket Pro fits inside of old USB case rather nicely, Soldering and fitting the USB "A" adapter will be a bit tricky,  Being surprised at how robust hot-melt glue is  I will use it to fit the parts of my prototype. The pics I included is what I have so far..

View all instructions

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pcdocms wrote 09/05/2017 at 04:30 point

This project address the obesity pandemic (yes, believe it or not, the world is getting heavier, and that is not a good thing. )  There is a link between chronic obesity and chronic disability (e.g. obesity can lead to type 2 diabetes, which is turn leads debilitating conditions such as ,stroke, cardiovascular disease, renal failure,  and blindness )

If  we can find a cheap way people who are not tech savvy can track their exercise progress, we can elimate these conditions all together.

If we could eliminate the above conditions by fighting obesity, we can divert more of our health care resources to fight the really hard diseases.

  Are you sure? yes | no

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