Hi
All good. Thank you.

Hi Iain. You are a good man. I see the difference between the: ------------------------------------------------------------------------- a = (sin (((lat_diff / 2) * sin (lat_diff / 2))) + cos (Lat1) * cos (Lat2) * (sin (lon_diff / 2) * sin (lon_diff / 2))) And: a = ((sin(dlat / 2) * sin(dlat / 2))) ...

Hi again. Haversine Did not work for me. a = sin² (Δlat / 2) + cos(lat1) × cos(lat2) × sin²(Δlong / 2) Flowcode: a = (sin (((lat_diff / 2) * sin (lat_diff / 2))) + cos (Lat1) * cos (Lat2) * (sin (lon_diff / 2) * sin (lon_diff / 2))) c = 2 * atan2 (sqrt (a),sqrt (1 - a)) d = 6371.0 * c Example1 -Wars...

I can only suggest to try to filter out the UTC time without even using the gps module.
If you use the string manipulations to get the 151227 out of ($GNRMC,151227.3997,) and convert it to local time, you can do the major part.

Thank you guys for the help.
Will try to implement.
I thought I have to find the difference between the (for example) lat2-lat1 before the radian conversion.

Hi
Wonder if anybody work with the gps distance calculation.
Any suggestions how to implement the Haversine formula?
Thanks.

HI. Only a time? Why don't you use the cheap Neo 6x module? Neo gives user a free software (u-centre). Easy to test the module without the flowcode engine. I do not think you need to use the flowcode component. Neo module can receive the $GNRMC,151227.3997,A,4723.5403567,N,00826.8867153,E,0.00000,81...

Hi Stefan
I am working with Neo8N right now.
What is the benefit of GPS SMA (instead of high speed) ?
Does it have a high precision?
Thanks

Thanks Bijumon
Safety is important.
May be a good idea to put MC to sleep if no signal registered.

Good news, Jorgen.
One only note: you read the end switch state as byte.
Bool will save you some space (if you plan to extend the program later).