In September in Novi Sad, Serbia there will be a conference called BalCCon2k17, short for
Balkan Computer Congress. Last year we had a booth there and it was awesome!
This is the last year's event: https://fedoraproject.org/wiki/BalCCon_2k16
For BalCCon2k17 there is only few days left (until Saturday) to submit talks and
workshops. You can do so here:
They accept talks about hardware and software and also hacking and tinkering in general.
Please submit your talk soon and I hope to see you in Novi Sad. :)