From 22-year-oldrocket scientist Tierra Guinn to tweenie app developers and ninja innovators CoderDojo's Coolest Projects has it all. Here are highlights from the event in Dublin's RDS.

RTÉ's Science and Technology Correspondent, Will Goodbody was at the event to do a report for RTÉ News and he was tweeting about the event.

10. Will Goodbody: "Great vibe down at the @CoderDojo @coolestprojects at the RDS. Brilliant projects by some very clever young people! The future is bright!"

9. @Coderdojo: "Well done to 22 year old Tierra Guinn rocket engineer from @NASA #CoolestProject - believe in yourself #GirlsInTech #Codedojo"

8. @coolestprojects: "Now @mitchelloconnor has arrived! #CoolestProjects #cp17"

7. @AccentureDock: "It's 27 degrees in Dublin, but it's nice + cool at #CoolestProjects. Drop by our stand and try your hand at our VR roller coaster!"

6. @LifeStyleRTE: "It's important we get girls excited about technology ": Cathriona Hallahan @Microsoftirl"


5. Coolest Projects‏ @coolestprojects: "Selin from Turkey has made a supercool collar to find lost dogs! Very hi-tech #coolestprojects #cp17"

4. Sandra Maguire: "Fantastic to see 17 countries being represented on Opening Stage of #CoolestProjects in RDS today"

3. @coolestprojects: "Our friend @willgoodbody interviewing ninjas at this years #CoolestProjects for @rte"

2. @CoderDojo: "Welcome to #CoolestProjects 2017! With ninjas from 17 countries presenting their awesome tech projects!"

1. @rte: "5 things not to miss @CoderDojo @coolestprojects today @TheRDS"