API limit

[xyn3rgy]

Good day Heikki

I recently discovered https://aprs.fi/ and I was curious about the API limit per day. As a hobby project, I am building a ferry application to report the ETA for our water taxis in Trinidad and Tobago. This would be a free service.

I estimate 60 API calls per day. What's the current limit?

Would a bottle of rum increase the limit further? ;0

[Michael Pechner]

You might not charge for it, but the data supports a commercial enterprise.

Wouldn't a twitter feed be more appropriate?

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Michael Pechner
NE6RD - Amateur Extra
mi...@mikey.com

[xyn3rgy]

True about twitter. Using it as a hobby project to learn react. 

Government ran organization so I don't know if I would use the word commercial to describe their operations. Lol

Let me know if I'm allowed to use aspri fi. I don't intend to violate your policies. From the API documentation, it seems to allow it with a limit on the API calls. If there is some fee that google ads can help me cover, I would be willing to contribute.

[Heikki Hannikainen]

On Sun, 22 Nov 2020, xyn3rgy wrote:

> Good day Heikki
> I recently discovered https://aprs.fi/ and I was curious about the API limit per day. As a hobby project, I am
> building a ferry application to report the ETA for our water taxis in Trinidad and Tobago. This would be a free
> service.
>
> I estimate 60 API calls per day. What's the current limit?

Hi,

That level of use will easily fit in within the API limit (which I don't
exactly remember from the top of my head). If you're fetching positions of
multiple targets, do so with a single API call. It supports fetching many
at a time, and the rate limits are for number of API call.

> Would a bottle of rum increase the limit further? ;0

Good rum is always good rum, but I'd have to actually write more code to
support individual per-user limits, and that'd take a cask. :)

Happy hacking!

- Hessu

[kd2...@gmail.com]

If you go to aprs.fi and scroll/zoom to New York City, you can see the tracks of many ferries up and down the East and Hudson rivers.

https://aprs.fi/#!lat=40.71667&lng=-73.983333

Looking into a randomly chosen track, I see things in packet info: " 367778670 > ais via K6UAN"

Maritime AIS info:

https://en.wikipedia.org/wiki/Automatic_identification_system

It's an international regulation that all passenger vessels use AIS, presumably the ferries you are interested in already have it or should have it.

Looks like someone ( K6UAN) is capturing over the air and feeding into aprs system? Or Does APRS.fi take an AIS feed in itself?

You can go to https://www.vesselfinder.com/ and zoom around and see the same info.

73, Rob - KD2GRS

On Monday, November 23, 2020 at 8:48:58 AM UTC-5 xyn3rgy wrote:

True about twitter. Using it as a hobby project to learn react. 

Government ran organization so I don't know if I would use the word commercial to describe their operations. Lol

Let me know if I'm allowed to use aspri fi.

Garrett 

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