EESchema Schematic File Version 2 LIBS:power LIBS:device LIBS:transistors LIBS:conn LIBS:linear LIBS:regul LIBS:74xx LIBS:cmos4000 LIBS:adc-dac LIBS:memory LIBS:xilinx LIBS:microcontrollers LIBS:dsp LIBS:microchip LIBS:analog_switches LIBS:motorola LIBS:texas LIBS:intel LIBS:audio LIBS:interface LIBS:digital-audio LIBS:philips LIBS:display LIBS:cypress LIBS:siliconi LIBS:opto LIBS:atmel LIBS:contrib LIBS:valves LIBS:rs485-cache EELAYER 25 0 EELAYER END $Descr A4 11693 8268 encoding utf-8 Sheet 1 1 Title "" Date "" Rev "" Comp "" Comment1 "" Comment2 "" Comment3 "" Comment4 "" $EndDescr $Comp L MAX485E U1 U 1 1 59A20600 P 3300 2100 F 0 "U1" H 3060 2550 50 0000 C CNN F 1 "MAX485E" H 3330 2550 50 0000 L CNN F 2 "Housings_SOIC:SOIC-8_3.9x4.9mm_Pitch1.27mm" H 3300 1400 50 0001 C CNN F 3 "" H 3300 2150 50 0001 C CNN 1 3300 2100 1 0 0 -1 $EndComp $Comp L Screw_Terminal_1x02 J1 U 1 1 59A206B1 P 4550 1750 F 0 "J1" H 4550 2000 50 0000 C TNN F 1 "Screw_Terminal_1x02" V 4400 1750 50 0000 C TNN F 2 "Connectors_Terminal_Blocks:TerminalBlock_Pheonix_MPT-2.54mm_2pol" H 4550 1525 50 0001 C CNN F 3 "" H 4525 1750 50 0001 C CNN 1 4550 1750 0 1 1 0 $EndComp $Comp L Screw_Terminal_1x02 J2 U 1 1 59A206E0 P 4550 2550 F 0 "J2" H 4550 2800 50 0000 C TNN F 1 "Screw_Terminal_1x02" V 4400 2550 50 0000 C TNN F 2 "Connectors_Terminal_Blocks:TerminalBlock_Pheonix_MPT-2.54mm_2pol" H 4550 2325 50 0001 C CNN F 3 "" H 4525 2550 50 0001 C CNN 1 4550 2550 0 1 -1 0 $EndComp $Comp L Jumper JP1 U 1 1 59A20713 P 5150 2000 F 0 "JP1" H 5150 2150 50 0000 C CNN F 1 "Jumper" H 5150 1920 50 0000 C CNN F 2 "Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm" H 5150 2000 50 0001 C CNN F 3 "" H 5150 2000 50 0001 C CNN 1 5150 2000 1 0 0 -1 $EndComp $Comp L R R1 U 1 1 59A207B4 P 5150 2300 F 0 "R1" V 5230 2300 50 0000 C CNN F 1 "120R" V 5150 2300 50 0000 C CNN F 2 "Resistors_SMD:R_0603" V 5080 2300 50 0001 C CNN F 3 "" H 5150 2300 50 0001 C CNN 1 5150 2300 0 -1 -1 0 $EndComp Wire Wire Line 3700 2300 5000 2300 Wire Wire Line 4650 1950 4650 2350 Connection ~ 4650 2300 Wire Wire Line 3700 2000 4850 2000 Wire Wire Line 4450 1950 4450 2350 Connection ~ 4450 2000 Wire Wire Line 5450 2000 5450 2300 Wire Wire Line 5450 2300 5300 2300 $Comp L R R2 U 1 1 59A20C06 P 2250 2000 F 0 "R2" V 2330 2000 50 0000 C CNN F 1 "10k0" V 2250 2000 50 0000 C CNN F 2 "Resistors_SMD:R_0603" V 2180 2000 50 0001 C CNN F 3 "" H 2250 2000 50 0001 C CNN 1 2250 2000 0 1 1 0 $EndComp $Comp L R R3 U 1 1 59A20CF7 P 2250 2100 F 0 "R3" V 2330 2100 50 0000 C CNN F 1 "10k0" V 2250 2100 50 0000 C CNN F 2 "Resistors_SMD:R_0603" V 2180 2100 50 0001 C CNN F 3 "" H 2250 2100 50 0001 C CNN 1 2250 2100 0 1 1 0 $EndComp $Comp L R R4 U 1 1 59A20D4E P 2250 2200 F 0 "R4" V 2330 2200 50 0000 C CNN F 1 "10k0" V 2250 2200 50 0000 C CNN F 2 "Resistors_SMD:R_0603" V 2180 2200 50 0001 C CNN F 3 "" H 2250 2200 50 0001 C CNN 1 2250 2200 0 1 1 0 $EndComp $Comp L R R5 U 1 1 59A20D54 P 2250 2300 F 0 "R5" V 2330 2300 50 0000 C CNN F 1 "10k0" V 2250 2300 50 0000 C CNN F 2 "Resistors_SMD:R_0603" V 2180 2300 50 0001 C CNN F 3 "" H 2250 2300 50 0001 C CNN 1 2250 2300 0 1 1 0 $EndComp Wire Wire Line 2400 2000 2900 2000 Wire Wire Line 2400 2100 2900 2100 Wire Wire Line 2400 2200 2900 2200 Wire Wire Line 2400 2300 2900 2300 Wire Wire Line 2100 2000 2050 2000 Wire Wire Line 2050 2100 2100 2100 Wire Wire Line 2050 2200 2100 2200 Connection ~ 2050 2100 Wire Wire Line 2050 2300 2100 2300 Connection ~ 2050 2200 Connection ~ 2050 2300 Wire Wire Line 2050 1500 2050 2300 Wire Wire Line 2050 1500 3850 1500 Wire Wire Line 3300 1400 3300 1600 Connection ~ 2050 2000 $Comp L R R6 U 1 1 59A214C6 P 3850 2000 F 0 "R6" V 3930 2000 50 0000 C CNN F 1 "20k" V 3850 2000 50 0000 C CNN F 2 "Resistors_SMD:R_0603" V 3780 2000 50 0001 C CNN F 3 "" H 3850 2000 50 0001 C CNN 1 3850 2000 1 0 0 -1 $EndComp $Comp L R R7 U 1 1 59A21585 P 4000 2350 F 0 "R7" V 4080 2350 50 0000 C CNN F 1 "20k" V 4000 2350 50 0000 C CNN F 2 "Resistors_SMD:R_0603" V 3930 2350 50 0001 C CNN F 3 "" H 4000 2350 50 0001 C CNN 1 4000 2350 1 0 0 -1 $EndComp Wire Wire Line 4000 2000 4000 2200 Connection ~ 4000 2000 Wire Wire Line 3850 2300 3850 2150 Connection ~ 3850 2300 Wire Wire Line 3850 1500 3850 1850 Connection ~ 3300 1500 Wire Wire Line 4000 2850 4000 2500 $Comp L C C1 U 1 1 59A21DBC P 2550 1700 F 0 "C1" H 2575 1800 50 0000 L CNN F 1 "10u" H 2575 1600 50 0000 L CNN F 2 "Capacitors_SMD:C_1206" H 2588 1550 50 0001 C CNN F 3 "" H 2550 1700 50 0001 C CNN 1 2550 1700 1 0 0 -1 $EndComp $Comp L C C2 U 1 1 59A21F55 P 2800 1700 F 0 "C2" H 2825 1800 50 0000 L CNN F 1 "100n" H 2825 1600 50 0000 L CNN F 2 "Capacitors_SMD:C_0603" H 2838 1550 50 0001 C CNN F 3 "" H 2800 1700 50 0001 C CNN 1 2800 1700 1 0 0 -1 $EndComp Wire Wire Line 2550 1550 2550 1500 Connection ~ 2550 1500 Wire Wire Line 2800 1550 2800 1500 Connection ~ 2800 1500 Wire Wire Line 2800 1850 2800 2850 Wire Wire Line 2550 1850 2550 1900 Wire Wire Line 2400 1900 2800 1900 Connection ~ 2800 1900 $Comp L CONN_01X03 J3 U 1 1 59A224DF P 2150 1750 F 0 "J3" H 2150 1950 50 0000 C CNN F 1 "CONN_01X03" V 2250 1750 50 0000 C CNN F 2 "Pin_Headers:Pin_Header_Straight_1x03_Pitch2.54mm" H 2150 1750 50 0001 C CNN F 3 "" H 2150 1750 50 0001 C CNN 1 2150 1750 -1 0 0 -1 $EndComp Wire Wire Line 2350 1650 2400 1650 Wire Wire Line 2400 1650 2400 1500 Connection ~ 2400 1500 Wire Wire Line 2350 1850 2400 1850 Wire Wire Line 2400 1850 2400 1900 Connection ~ 2550 1900 Wire Wire Line 2300 2600 2450 2600 Wire Wire Line 2450 2600 2450 2300 Connection ~ 2450 2300 Wire Wire Line 2300 2700 2750 2700 Wire Wire Line 2750 2700 2750 2000 Connection ~ 2750 2000 Connection ~ 2600 2200 Wire Wire Line 2400 2950 2950 2950 $Comp L +5V #PWR01 U 1 1 59A23532 P 3300 1400 F 0 "#PWR01" H 3300 1250 50 0001 C CNN F 1 "+5V" H 3300 1540 50 0000 C CNN F 2 "" H 3300 1400 50 0001 C CNN F 3 "" H 3300 1400 50 0001 C CNN 1 3300 1400 1 0 0 -1 $EndComp NoConn ~ 2350 1750 Text Label 3550 1500 0 60 ~ 0 +5V Text Label 3600 2850 0 60 ~ 0 GND $Comp L PWR_FLAG #FLG02 U 1 1 59A23C51 P 2350 1650 F 0 "#FLG02" H 2350 1725 50 0001 C CNN F 1 "PWR_FLAG" H 2350 1800 50 0000 C CNN F 2 "" H 2350 1650 50 0001 C CNN F 3 "" H 2350 1650 50 0001 C CNN 1 2350 1650 1 0 0 -1 $EndComp Wire Wire Line 2800 2850 4000 2850 Wire Wire Line 3300 2700 3300 2850 Connection ~ 3300 2850 $Comp L GND #PWR03 U 1 1 59A23FF1 P 3300 2850 F 0 "#PWR03" H 3300 2600 50 0001 C CNN F 1 "GND" H 3300 2700 50 0000 C CNN F 2 "" H 3300 2850 50 0001 C CNN F 3 "" H 3300 2850 50 0001 C CNN 1 3300 2850 1 0 0 -1 $EndComp $Comp L PWR_FLAG #FLG04 U 1 1 59A24239 P 2350 1850 F 0 "#FLG04" H 2350 1925 50 0001 C CNN F 1 "PWR_FLAG" H 2350 2000 50 0000 C CNN F 2 "" H 2350 1850 50 0001 C CNN F 3 "" H 2350 1850 50 0001 C CNN 1 2350 1850 1 0 0 -1 $EndComp $Comp L Jumper_NC_Dual JP2 U 1 1 59A29FE4 P 2700 3100 F 0 "JP2" H 2750 3000 50 0000 L CNN F 1 "Jumper_NC_Dual" H 2700 3200 50 0000 C BNN F 2 "Connectors:GS3" H 2700 3100 50 0001 C CNN F 3 "" H 2700 3100 50 0001 C CNN 1 2700 3100 -1 0 0 1 $EndComp Wire Wire Line 2600 2200 2600 2950 Wire Wire Line 2700 2100 2700 3000 Connection ~ 2700 2100 Wire Wire Line 2300 3100 2450 3100 Wire Wire Line 2950 2950 2950 3100 Connection ~ 2600 2950 $Comp L CONN_01X06 J4 U 1 1 59A2D058 P 2100 2850 F 0 "J4" H 2100 3200 50 0000 C CNN F 1 "CONN_01X06" V 2200 2850 50 0000 C CNN F 2 "Pin_Headers:Pin_Header_Straight_1x06_Pitch2.54mm" H 2100 2850 50 0001 C CNN F 3 "" H 2100 2850 50 0001 C CNN 1 2100 2850 -1 0 0 -1 $EndComp Wire Wire Line 2400 2950 2400 3000 Wire Wire Line 2400 3000 2300 3000 NoConn ~ 2300 2800 $Comp L TEST TP1 U 1 1 59A2D656 P 2400 2900 F 0 "TP1" H 2400 3200 50 0000 C BNN F 1 "TEST" H 2400 3150 50 0000 C CNN F 2 "Measurement_Points:Measurement_Point_Round-SMD-Pad_Small" H 2400 2900 50 0001 C CNN F 3 "" H 2400 2900 50 0001 C CNN 1 2400 2900 1 0 0 -1 $EndComp Wire Wire Line 2400 2900 2300 2900 $EndSCHEMATC