The problem went away after a firmware update. The most likely interpretation is that the reed switch is generating two pulses for each pass of the magnet, but now each double-pulse is interpreted in software as a single pulse. It's not ideal (hardware with one defect has a higher chance of also having other issues), but it's accurate.
I am also searching for a computer with non-volatile memory.
According to Sigma the computers
BC 7.16 ATS
BC 9.16 ATS
PURE 1 (according to the reply from Sigma customer service)
do not save your values after a battery change (however, you can manually set the odometer). And following Sigma computers retain data:
Heuristically, bike computers can be split into non-GPS and GPS computers. If all you want is speed, distance, and optionally cadence, your needs might be met with a cheaper non-GPS computer. Many of them have wires to a speed sensor mounted on the fork. In the past, some of these units may also have had wires to a cadence sensor by the cranks. An older ...
The bike computer app I use will do almost all of this: IpBike. It's not free long-term, but you can try it for free for long enough to know whether you like it. Its "Workout" mode allows you to set a target speed (or cadence, heart rate, power) specified as a range, and have feedback when you're out of range. This could be as an interval in ...
GPS-based computers, which are often called head units, typically use two communication protocols: Bluetooth (which is the same as many personal electronic devices like smartphones use) and ANT+, which is a protocol developed for the cycling world. I think that ANT+ was initially developed for power meters, but it can be used for other devices.
Either is fine - in fact on this timescale there's not much difference.
I suspect that what's most satisfying for your body and your desire to measure will be somewhere between the two - probably something like 2300 Cal on your off days and 2900 on your riding days. This should be quite achievable - a handful of cheese added to your pasta ...
The bike computer is based on the relationship between altitude and air pressure. Even though it has 1 meter resolution, it is still constrained by the air pressure around you. About 11.3 Pascal difference in air pressure is counted as one meter.
One thing to consider is that most houses have a slight 10 Pascal negative pressure caused by the ventilation ...
I had a problem with a low-end wired cateye computer. It would work fine for a while, and then occasionally my reported speed would be 50% higher, bursting to 100% higher. I even saw 90 km/h once when I was riding at about 30.
Fortunately I have a couple of these, and managed to isolate the problem to the sensor, not the magnet nor the head unit.
There are two causes of extra counts:
Reed switch double closure
Radio interference (in an analog radio based wireless cyclocomputer)
The source (1) can happen all the time or rarely. If the magnet is incorrectly oriented, it may happen all the time in such great proportions that the speedometer and thus odometer reads incorrect values. In this case, the ...
Wireless bicycle computers have more problems than wired. The transmitter battery is much more expensive. Passing under high voltage power lines can reset the computer. Outside radio interference can confuse the computer.
For the few the bicycle computer companies you listed, Cateye has been making bike computers the longest. Since the 1970s.
Most new ...
I tried to get real time ANT sensor data from a Garmin watch to a PC. But this is difficult. BLE is easier. The following bike computer is very basic, but can be modified by the user:
Pyloton: CircuitPython Cycling Computer. Open Source cycling computer that displays heart rate, speed, cadence, and song playback info.
When wrapping your light with tin foil, remember high power means maximum ventilation is required. They can chuck out some heat. On the computer side, when was the last time you changed the battery in the sender unit attached to the fork? Does the problem only occur when your light is on flash or pulse? If so try switching to a steady light instead.
It sounds a bit like you want the computer mounted centrally and in front of the stem. As you know Wahoo computers all come with an out front mount that attaches to the handlebar. I think that you are looking for something that doesn't clamp there, perhaps because you have accessories. In general, Googling for "out front" mount should identify most ...
We try to avoid specific product recommendations here, but there are a number of computer mounts that attach directly in front of the stem's faceplate, through a pair of extra-long bolts into the stem.
Also, Ritchey makes a universal stem mount (which mounts the same way). You could combine this with a 3D-printed GoPro adapter.
i use my mobile phone and bought a universal bike phone holder which sits on the handle bar,i use 3 different apps (not at the same time) strava, relive and komoot, all have a free app or paid subscription personally i prefer strava because you can download the data to a pc then upload to relive to create an videomap of your trip, photos can be included ...
To start with, "I'll mention that even the best designed smartwatches may not help much as a cycling heart rate monitor, since the second electrode is in the crown." is so nonsense it's not even wrong. There exists an entire category of non-smartwatch sports watches that use optical sensor, not electrode, for heart rate.
In addition to ANT ...
Looking through the specs of the ROX12 it should be possible to store custom map data on a compatible SD card.
The device itself seems to use OSM format, this is Open Street Format that can be downloaded from either
Open Street Map
More Open Street Map Info
According to the manual ROX12 User Manual you should be able to select custom maps from ...