Hello Team, Andy, That is very good news! Thanks for the effort you put into this most valuable extension. For my plan of testing the Time-Of-Arrival-positioning of Bitterns that would be well within the deadline. If i could start say the the first half of March all would go according to plan. If it would be helpful me doing some more (field) testing earlier before the season we could contact about using the prototypes, i will reply to your email-address Andy so you will have mine as well. Cheers, Eric

Hi Alex, Is there a chance that the GPS modules will be available before the start of this years breeding season? @David Jarrett, i have send you an email with a link to a page where you can experiment with triangulation, did that arrive? Anyway I am working on an alternative method for synchronization and will post the results here if these would be worthwhile. Kind regards all, Eric

Hi David, Its an established method that we worked out in a little test program. In essence it gives you a crossing point of three hyperboles as an estimate of the possition of a soundsource. If you take two audiomoths that are propperly synchronize and place them some distance apart you can calculate a line on which the source must be given a measured time-difference of arrival of its sound at each audiomoth. Than if you place three audiomoths in a triangle you can calculate three hyperboles that will cross each other and so gives you an estimate of the position of a soundsource. I plan to do a fieldtest in the next months. If you wish we could share information on this, no problem. Cheers, Eric

Hi Alex, That really is great news! Count me in for a group purchase, if that is possible that is. There will be an anouncement of this i expect and will look for it every day! This level of synchronisation would certainly do it for localisation of Bitterns. Can't wait for next season. Many thanks, Eric

Hello, any news on the status of this GPS synchronisation solution? I did a very succesfull project on Bitterns using Audiomoths and already collected a ton of useful data (thanks for making this open source project happening! It realy made a difference). If i could get the timekeeping accurate for next season it would be straightforward to add sufficiently accurate localisation of the booming males. Programming and math to do this allready in place so hopefully I will find a solution to sufficiently synchronize the 8 Audiomoths. One sulution would be to measure the drift for every particular divice and use a correction when analyzing. Another is to make a simple device that produces a accurately timed beep and put this 'on tape' when i place a Audiomoth in the field and again when i collect it. Any other suggestions maybe. Cheers, Eric