Please read this manual in conjunction with the operating manual
and other documentation on the U4B product page
http://qrp-labs.com/qdx
Contents
Contents.......................................................................................................................................................................... 2
1. Introduction................................................................................................................................................................. 3
2. SAFETY FIRST............................................................................................................................................................... 4
3. Know your U4B............................................................................................................................................................ 5
4. Parts list....................................................................................................................................................................... 6
5. Track layout................................................................................................................................................................. 7
6. GPIO pins 8-18 pad locations.......................................................................................................................................7
7. Parts layout, top side................................................................................................................................................... 8
8. Parts layout, bottom side............................................................................................................................................8
9. Schematic.................................................................................................................................................................... 9
10. Circuit explanation................................................................................................................................................... 10
11. Basic flight connections........................................................................................................................................... 12
12. Resources................................................................................................................................................................ 13
13. Document Revision History.....................................................................................................................................13
U4B hardware Rev 1.00
2
Summary of Contents for U4B
Page 1: ...U4B U4B Ultimate4 Balloon tracker Hardware manual U4B hardware Rev 1 00 1 ...
Page 7: ...5 Track layout 6 GPIO pins 8 18 pad locations U4B hardware Rev 1 00 7 ...
Page 8: ...7 Parts layout top side 8 Parts layout bottom side U4B hardware Rev 1 00 8 ...
