ref value ??1 PAC82C250 C1 100nF C2 100nF C3 100nF C5 100nF C6 100nF C7 100nF C8 100nF C9 10nF C10 100nF C11 1nF C12 10nF C13 1nF D1 LED D2 LED D3 LED IC1 SJA1000 IC2 NE556N J1 DB9 JP1 JUMPER JP2 JUMPER JP3 JUMPER JP4 JUMPER OC1 6N137 OC2 6N137 P2 CONN_5X2 P3 CONN_5X2 P4 DIL14 P5 CONN_2X2 P6 CONN_3X2 Q1 NPN Q2 NPN QG1 XO-14 R3 390R R4 1k R5 1k R6 390R R7 22k R8 120R R9 330R R10 10k R11 33k R12 10k R13 33k R14 10k R15 330R R16 10k R17 330R R18 22k