Position is sent to Thinger. io dashboard with a map view. SMS reply on request with map link and triggered notifications - software odometer
Project tutorial by tormods
Track ME is a "small" GPS, SD Card, and GSM Shield controlled by an Arduino Mega.
Call me and get my location.
Project tutorial by Hugo Gomes
Hi Samantha! Glad you found it useful! I try my best :)
I'm not familiar with the sim800 models although I've seen that it is what I should have used as its replacing the older sim900. Are you also posting to thinger.io or just a HTTP post request in general?
The 400 return code just means "bad HTTP request", so the request is rejected. The message basically says that "something is wrong with your request". This can come down to anything really, what you are essentially doing is building the HTTP POST request with all attention commands (AT commands) before sending it with"HTTPACTION=1". So any of the previous AT commands can be wrong in one way or another. The things I struggled with that you can check:
If any one of these things are wrong, you might get that return code (or similar).
If none of that works, I think you are better off posting your code and serial output in the forum section, that way it's easier to see the code and what might be wrong.. it always helps to have some context
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