My bike computer is a Cateye Urban Wireless. After replacing the battery I lost the odometer reading that was at ~ 4,280 miles. This model doesn't appear to have any option to manually enter a preloaded ODO reading.
Since I'm quite proud of this number I'm not agreeable to simply committing the original ODO to memory. So I'm looking for the most practical solution. Here's a list of solutions that I've pondered beginning with the most preferable. This because the battery life of the transmitter is based on miles peddled. This is because the transmitter is pulsed on by magnet sweeping past a hall effect sensor integral to the transmitter, which is affixed to the front fork.
(1A) Attempt to simulate the transmitter with a keyed RF signal source.
(1B) Increase the key rate to a value just below the computer's limit to read it.
(2) Pulse an electromagnet taped to the transmitter's Hall Effect sensor. Adjust the key rate as in (1B).
(3) Mount a magnet on a small disk that's connected to a motor shaft. Sweep it past the hall effect sensor and increase RPM to just below the rate that the computer or transmitter can handle.
The problem with 2 & 3 is I have no idea how the transmitter will handle a rep rate many times faster than it was designed. After all, this is designed for an extremely brief duty cycle. I could very well burn it out while trying to stuff a year of cycling into minutes. For certain the CR2032 button battery, that powers the transmitter, will be sucked dry.
Gee, after actually putting this down in print I think I am more agreeable to committing my current ODO to memory!
Chris
Since I'm quite proud of this number I'm not agreeable to simply committing the original ODO to memory. So I'm looking for the most practical solution. Here's a list of solutions that I've pondered beginning with the most preferable. This because the battery life of the transmitter is based on miles peddled. This is because the transmitter is pulsed on by magnet sweeping past a hall effect sensor integral to the transmitter, which is affixed to the front fork.
(1A) Attempt to simulate the transmitter with a keyed RF signal source.
(1B) Increase the key rate to a value just below the computer's limit to read it.
(2) Pulse an electromagnet taped to the transmitter's Hall Effect sensor. Adjust the key rate as in (1B).
(3) Mount a magnet on a small disk that's connected to a motor shaft. Sweep it past the hall effect sensor and increase RPM to just below the rate that the computer or transmitter can handle.
The problem with 2 & 3 is I have no idea how the transmitter will handle a rep rate many times faster than it was designed. After all, this is designed for an extremely brief duty cycle. I could very well burn it out while trying to stuff a year of cycling into minutes. For certain the CR2032 button battery, that powers the transmitter, will be sucked dry.
Gee, after actually putting this down in print I think I am more agreeable to committing my current ODO to memory!
Chris
