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fp-lib-table
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README

TURNIPSCHOOL - An open source reimagining of COTTONMOUTH-I

This is an experimental design for a USB hub + CC1111 dongle hidden within a 
USB plug.  It is intended to work with RfCat:
https://bitbucket.org/atlas0fd00m/rfcat

TURNIPSCHOOL is part of the NSA Playset:
http://www.nsaplayset.org/turnipschool

This design was made with KiCad:
http://www.kicad-pcb.org/

order of copper layers:
    Copper 1:  C1F (front)
    Copper 2:  C2
    Copper 3:  C3
    Copper 4:  C1B (back)

PCB description: 4 layer PCB 0.0646 in
    Copper       1:  1 oz copper (1.4 mil)
    Dielectric 1-2:  6.7 mil prepreg
    Copper       2:  0.5 oz copper (0.7 mil)
    Dielectric 2-3:  47 mil core
    Copper       3:  0.5 oz copper (0.7 mil)
    Dielectric 3-4:  6.7 mil prepreg
    Copper       4:  1 oz copper (1.4 mil)

FR408 or similar substrate with Er=3.66 (+/- 0.1)
double side solder mask
double side silkscreen
5 mil min trace width and
5 mil min isolation

PCBs of this specification are available from OSH Park.