M image/svg+xml Left edge Left edge Bottom edge Bottom edge Top edge Top edge Right edge Right edge 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 A A B B C C D D E E F F G G H H I I J J K K L L M M N N O O M N N O O A P B Q C R D S E T F U G V H W = track separated beneath = track separated beneath = component inserted into this hole = component inserted into this hole = link/jumper = link/jumper = connector = connector U1: PIC16F628 U1: PIC16F628 U2: ULN2803 U2: 754410 J1 J1 J2 J2 J6 J6 R4 R4 R1 R1 J2 J5 J2 J3 J2 J4 J2 J7 J2 R3 J2 R2 J2 C3 J2 C1 J2 C2 J2 R5