Interfacing bicycle to computer for indoor training?

[email hidden] (Peter Guidry) wrote in message news:<[email hidden]>...

Quoted message said:

What I am talking about is a DIY cheap version of the compu-trainer. I used to program
microcontrollers and it would have been fairly trivial to run a magnetic switch on a
microcontroller interrupt to calculated speed.

But I know comparatively little about interfacing unique HW to a PC under windows.

But this should not pose any significant challenge and with under $10 of HW cost you should be
able to get wheel pulse info into the PC. If the PC can directly read the pulses via an interrupt.
If not then a simple microcontroller with serial interface could do the work and send speed
updates via rs232.

So has anyone heard of any user projects like this?

Computrainer sells a cheaper product called Anytrainer. I have it and as far as I can tell they
simply have the magnet on the wheel passing a coil attached to the frame which is wired directly to
the serial port. I think I paid about $30 for the gizmo and software.

Matt Cahill said:

[email hidden] (Peter Guidry) wrote in message
news:<[email hidden]>...

Quoted message said:

What I am talking about is a DIY cheap version of the compu-trainer. I used to program
microcontrollers and it would have been fairly trivial to run a magnetic switch on a
microcontroller interrupt to calculated speed.

But I know comparatively little about interfacing unique HW to a PC under windows.

But this should not pose any significant challenge and with under $10 of HW cost you should be
able to get wheel pulse info into the PC. If the PC can directly read the pulses via an
interrupt. If not then a simple microcontroller with serial interface could do the work and send
speed updates via rs232.

So has anyone heard of any user projects like this?

Computrainer sells a cheaper product called Anytrainer. I have it and as far as I can tell they
simply have the magnet on the wheel passing a coil attached to the frame which is wired directly
to the serial port. I think I paid about $30 for the gizmo and software.

Thanks for the tip! www.anytrainer.com.

--
- Zilla Cary, NC (Remove XSPAM)

"Zilla" <[email hidden]> wrote in message news:<[email hidden]>...

Quoted message said:

Matt Cahill said:

[email hidden] (Peter Guidry) wrote in message
news:<[email hidden]>...

Quoted message said:

What I am talking about is a DIY cheap version of the compu-trainer. I used to program
microcontrollers and it would have been fairly trivial to run a magnetic switch on a
microcontroller interrupt to calculated speed.

But I know comparatively little about interfacing unique HW to a PC under windows.

But this should not pose any significant challenge and with under $10 of HW cost you should be
able to get wheel pulse info into the PC. If the PC can directly read the pulses via an
interrupt. If not then a simple microcontroller with serial interface could do the work and
send speed updates via rs232.

So has anyone heard of any user projects like this?

Computrainer sells a cheaper product called Anytrainer. I have it and as far as I can tell they
simply have the magnet on the wheel passing a coil attached to the frame which is wired directly
to the serial port. I think I paid about $30 for the gizmo and software.

Thanks for the tip! www.anytrainer.com.

Your welcome. I did notice that my memory was probably wrong about the price. On line ordering in
the web site you referenced said $80...still alot cheaper than a computrainer.

"Zilla" <[email hidden]> wrote in message news:<[email hidden]>...

Quoted message said:

Matt Cahill wrote:

Quoted message said:

Thanks for the tip! www.anytrainer.com.

Here is another. Free software and instruction for building the cable:

users.pandora.bespinner.htmlOpen ↗