Temperature is way off
Answered
The temperature reading on my Karoo 2 is at least 4-5 degrees Celsius too low. Am I alone here? An indication like: hot, cold, nice is as accurate as my device. Stange that the basic functions like speed, distance and temperature are so hard to cover.
Oh, and the auto update function that was fixed is still broken.
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Today, I decided to try a controlled experiment. I compared an accurate thermometer with the temperature shown by my Hammerhead at temperatures between 5C and 24C. The HH consistently reads 3C below the thermometer. It seems to me that a solution would be for Hammerhead to introduce an option in settings for users to calibrate the thermometer. For example, in my case, because the difference seems constant, I would "calibrate" by telling it to add 3 degrees centigrade. If the difference is not constant then a more elaborate procedure would be necessary, such as entering multiple readings from a trusted thermometer and the corresponding HH readings. However, most of the reports I've seen imply that the difference is more or less constant. This problem seems sufficiently widespread that one would hope that Hammerhead would fix this.
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Why measure something if you don't care about the measurement. The same goes for speed, distance etc. It's just about having fun on a bike isn't it?
I just don't get it that Hammerhead Support is not giving a reaction. Don't they give a sh*t? I really like the Karoo 2 but I advise people to wait for a matured version. One that does the basics right.
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Sorry for not getting back to you sooner.
We understand that you are not happy about the discrepancy in the temperature recordings on Karoo 2 compared to the reality. The discrepancy is due to the fact that Karoo 2 displays ambient temperature and this can be affected by the surroundings. We are reviewing the analytics data on how far off the temperature readings are, based on different regions. Also, the note here is that the reading is only an ambient temperature and not the exact temp which can always be difficult to calibrate, especially within an electronic enclosure. We will get this right!!
If we start getting increased reports from many users for the criticality of these particular issues, the product team will get it up on the priority list.
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I have recently purchased a K2 and it has been consistently reading about 5-6 C too low. This has been on cold rides where the ambient temp is about 8C and its reading 2C and warmer rides where it is 16C and reading about 10C. I don't expect it to be 100% accurate but this is the least accurate head unit i have owned for temp compared to Garmin and Wahoo units.
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@Gerry Stephenson Good question. But than again, why buy a unit like this at all. Unless you are a pro you don't need to know the temperature, speed, average speed, cadans etc. Only the route is important and your phone is better in this area than a cycling computer. I think if a company charges a premium price for a unit like this the least you can expect to give accurate data. And 1 degree is not a high degree of accuracy. I wouldn't ask for 0.1 degree accuracy. But for me 4 degrees is as good as no measurement at all.
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Different country, different temperature range, same old problem - K2 saying average temperature 21 deg C when actual temperature during the ride was between 26 and 24. How many users have to have the exact same problem with their units for Hammerhead to do something about it !?. Even a temporary fix such as a user manual offset option would be better than nothing. Disappointing that this has been ignored for so long.
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Hey Hari,
Thanks for (finally ;-)) jumping in.
I understand that there can exist factors that may introduce an error, but if you take the value I get now and add 4-5 degrees to it, it's almost spot on. Of course when I start a ride with my bike from the garage and go for a cold ride, it takes some time for the sensor to reach the air temperature. But it's never giving a correct value.
What I would suggest is that you can enter the correct value as often as I want. And the more data points I enter the more accurate the correction curve will be. So there will be a correct value in summer and winter. And I also would suggest that you take a great sensor for the Karoo 3. Measuring temperature is not rocket science in 2021.
Oh, and correct the speed while using sensors. The same strange problem of not getting the basics oke.
Thanks and bye,
Ruben
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I’d say if the unit provides information to the user, it should be accurate. Do I need to know how cold it is? Not really. Is it annoying when the unit gives me bad information? Yes. Similar to grade information. I know a 10% grade when I’m riding one, but if the unit says 6% or 14% it makes me question the reliability overall.
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@Mark: how useless is this comment? Doesn’t matter how important it is to you! It is for other obviously. And if there is a data field, I expect it to be precise.
Same question to you: why would I need a device telling me, when to eat or drink? I feel wenn I am hungry or in need of a drink. 😅
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Another vote for the temperature reading being too low. Seems to be pretty universal that it always reads low. Only exception to this would be if sitting in direct sunlight, in which case any temperature sensor will read higher than true ambient regardless of how accurate it is. And to those that say "does it really matter?" ..... 3 or 4 degrees could be the difference between ice on the road and no ice, so yeah, it matters.
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It was 8C outside temperature and my Karoo was showing 3C outside. I thought that wind chill doesn't affect inanimate objects — it affects humans because it carries away heat from the body, making it seem colder. With no wind you get a temperature gradient around the body, but the wind removes this by blowing the warmer layer of air away. An inanimate object will cool down to the ambient air temperature but will then not go any lower.
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Interesting, have seen others mention this but mine is pretty much spot on. Ride will start about 1 degree warmer than my indoor temperature and eventually stabilize about 1 degree colder than what my weather app says.
Must be some variance between units... maybe one day they'll add a calibration screen? -
Mine is definitely still low. Went on a group ride and compared everyone's temperature ranges from strava afterwards, and my K2 was between 1-6F degrees too low for the low temperature, and between 1-14F degrees too low for the high temperature, compared to everyone else's readings.
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My K2 reads 8-10F degrees higher than my two weather apps on my phone that pick up nearby weather stations. For example on my last ride, the phone apps said 86, the K2 says 96 degrees. It was sunny and warm but not a 96 degree scorcher...
I can walk outside and make a better guess than my Karoo reading. I agree with the other folks that said if the Temp field isn't going to be reasonably accurate, you may as well not have it. I have removed the field and replaced it with another data field.
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