HI i can help you , working with Altium A14 send sch, pcb,gerber and 3D model in step or Solid works
Please see portfolio for samples of works,
High expertice in NMEA protocols, recomend working with ATmel ATXMEGA128a4u icluded USB.
To save time and money
i can recommend working in steps.
For example you need on design or project apply private project to miky4227.
1 - setp design sch , select components , confirm ideas, and design first test.
if you are ok with this design continue
2- step design PCB one first prototype , PCB , Gerber and 3d model
if you are ok with this design continue.
3- step Make PCB and assembling in your country or in China or any and send ,
one for you and one for me.
if you are ok with this design continue.
4- step generated one first program one for test hardware.
if you are ok with this design continue.
5- step continue with this or other project
if you are ok with this design continue.
Cost and time for example
step SCH bid for $500 , and time is 5 day or 7days
step PCB bid for $500 , and time is 5 days or 7 days
step make PCB bid for $500 , and time is 10 days ,assembling and test.
Step make little soft bid for $500 , and time is 10 days ,
Bets regards.
other options are welcome
Best Regards
Miky.