EESchema Schematic File Version 4 LIBS:twosonar-cache EELAYER 26 0 EELAYER END $Descr A4 11693 8268 encoding utf-8 Sheet 1 1 Title "" Date "" Rev "" Comp "" Comment1 "" Comment2 "" Comment3 "" Comment4 "" $EndDescr $Comp L fab:ATTINY44-SSU IC1 U 1 1 5C9E0C07 P 5250 4150 F 0 "IC1" H 6100 5004 45 0000 C CNN F 1 "ATTINY44-SSU" H 6100 4920 45 0000 C CNN F 2 "fab:fab-SOIC14" H 5280 4300 20 0001 C CNN F 3 "" H 5250 4150 50 0001 C CNN 1 5250 4150 1 0 0 -1 $EndComp $Comp L fab:AVRISPSMD M1 U 1 1 5C9E0CB1 P 4350 5450 F 0 "M1" H 4448 5804 45 0000 C CNN F 1 "AVRISPSMD" H 4448 5720 45 0000 C CNN F 2 "fab:fab-2X03SMD" H 4380 5600 20 0001 C CNN F 3 "" H 4350 5450 50 0001 C CNN 1 4350 5450 1 0 0 -1 $EndComp $Comp L fab:FTDI-SMD-HEADER M2 U 1 1 5C9E0E9C P 6450 5700 F 0 "M2" H 6450 5700 45 0001 C CNN F 1 "FTDI-SMD-HEADER" H 6450 5700 45 0001 C CNN F 2 "fab:fab-1X06SMD" H 6480 5850 20 0001 C CNN F 3 "" H 6450 5700 50 0001 C CNN 1 6450 5700 1 0 0 -1 $EndComp $Comp L fab:RES-US1206 R1 U 1 1 5C9E129A P 7700 2800 F 0 "R1" H 7700 2994 45 0000 C CNN F 1 "10 K" H 7700 2910 45 0000 C CNN F 2 "fab:fab-R1206" H 7730 2950 20 0001 C CNN F 3 "" H 7700 2800 50 0001 C CNN 1 7700 2800 0 -1 -1 0 $EndComp $Comp L fab:RESONATOR M3 U 1 1 5C9E15E7 P 7900 5350 F 0 "M3" H 7900 5604 45 0000 C CNN F 1 "RESONATOR 20mhz" H 7900 5520 45 0000 C CNN F 2 "fab:fab-EFOBM" H 7930 5500 20 0001 C CNN F 3 "" H 7900 5350 50 0001 C CNN 1 7900 5350 1 0 0 -1 $EndComp $Comp L power:VCC #PWR0101 U 1 1 5C9E1692 P 3550 1950 F 0 "#PWR0101" H 3550 1800 50 0001 C CNN F 1 "VCC" H 3567 2123 50 0000 C CNN F 2 "" H 3550 1950 50 0001 C CNN F 3 "" H 3550 1950 50 0001 C CNN 1 3550 1950 1 0 0 -1 $EndComp $Comp L power:GND #PWR0102 U 1 1 5C9E1716 P 3550 2650 F 0 "#PWR0102" H 3550 2400 50 0001 C CNN F 1 "GND" H 3555 2477 50 0000 C CNN F 2 "" H 3550 2650 50 0001 C CNN F 3 "" H 3550 2650 50 0001 C CNN 1 3550 2650 1 0 0 -1 $EndComp Wire Wire Line 4950 4250 4600 4250 Text Label 4800 4250 0 50 ~ 0 VCC Wire Wire Line 7250 4150 7450 4150 Wire Wire Line 7250 4250 7700 4250 Text Label 7450 4150 0 50 ~ 0 mosi Text Label 7500 4250 0 50 ~ 0 miso Wire Wire Line 6450 5200 6100 5200 Wire Wire Line 6100 5300 6450 5300 Wire Wire Line 6450 5400 6100 5400 Wire Wire Line 6450 5500 6100 5500 Wire Wire Line 6450 5600 6100 5600 Wire Wire Line 6450 5700 6100 5700 Text Label 6250 5200 0 50 ~ 0 GND Text Label 6250 5400 0 50 ~ 0 VCC Text Label 6300 5500 0 50 ~ 0 tx Text Label 6300 5600 0 50 ~ 0 rx NoConn ~ 6100 5300 NoConn ~ 6100 5700 Wire Wire Line 4550 5350 5200 5350 Wire Wire Line 4550 5450 5200 5450 Wire Wire Line 4550 5550 5200 5550 Wire Wire Line 4250 5350 3750 5350 Wire Wire Line 4250 5450 3750 5450 Wire Wire Line 4250 5550 3750 5550 Text Label 3850 5350 0 50 ~ 0 miso Text Label 3850 5450 0 50 ~ 0 sck Text Label 3900 5550 0 50 ~ 0 rst Text Label 5000 5350 0 50 ~ 0 VCC Text Label 4900 5450 0 50 ~ 0 mosi Text Label 4950 5550 0 50 ~ 0 GND Wire Wire Line 7250 3550 7700 3550 Wire Wire Line 7700 3550 7700 3000 Wire Wire Line 7700 2600 7700 2200 Text Label 7700 2400 0 50 ~ 0 VCC Text Label 7400 3550 0 50 ~ 0 rst Wire Wire Line 7250 3750 7900 3750 Wire Wire Line 7600 5350 7250 5350 Wire Wire Line 8200 5350 8550 5350 Wire Wire Line 7250 3850 7900 3850 Text Label 7600 3750 0 50 ~ 0 xtal2 Text Label 7500 3850 0 50 ~ 0 xtal1 Text Label 8350 5350 0 50 ~ 0 xtal2 Text Label 7450 5350 0 50 ~ 0 xtal1 Wire Wire Line 7900 5650 7900 6050 Text Label 7900 5800 0 50 ~ 0 GND Wire Wire Line 7250 4350 7600 4350 Text Label 7600 4350 0 50 ~ 0 sck Wire Wire Line 7250 4650 7550 4650 Wire Wire Line 7250 4750 7550 4750 Text Label 7400 4650 0 50 ~ 0 rx Text Label 7450 4750 0 50 ~ 0 tx $Comp L fab:CAP-US1206 C1 U 1 1 5C9ED4BF P 3550 2250 F 0 "C1" H 3600 2504 45 0000 C CNN F 1 "1 uF" H 3600 2420 45 0000 C CNN F 2 "fab:fab-C1206" H 3580 2400 20 0001 C CNN F 3 "" H 3550 2250 50 0001 C CNN 1 3550 2250 0 -1 -1 0 $EndComp Wire Wire Line 3550 1950 3550 2050 Wire Wire Line 3550 2350 3550 2650 Wire Wire Line 4950 4750 4550 4750 Text Label 4650 4750 0 50 ~ 0 GND $Comp L Connector:Conn_01x04_Male J1 U 1 1 5CC31972 P 5650 2400 F 0 "J1" H 5756 2678 50 0000 C CNN F 1 "Conn_01x04_Male" H 5756 2587 50 0000 C CNN F 2 "Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical_SMD_Pin1Left" H 5650 2400 50 0001 C CNN F 3 "~" H 5650 2400 50 0001 C CNN 1 5650 2400 1 0 0 -1 $EndComp Wire Wire Line 5850 2300 6250 2300 Wire Wire Line 5850 2400 6250 2400 Wire Wire Line 5850 2500 6250 2500 Wire Wire Line 5850 2600 6250 2600 Text Label 6000 2300 0 50 ~ 0 VCC Text Label 6050 2400 0 50 ~ 0 TRIG2 Text Label 6000 2500 0 50 ~ 0 ECHO2 Text Label 6000 2600 0 50 ~ 0 GND $Comp L fab:PINHD-2X2-SMD M4 U 1 1 5CC345DA P 3800 3900 F 0 "M4" H 3750 4254 45 0000 C CNN F 1 "PINHD-2X2-SMD" H 3750 4170 45 0000 C CNN F 2 "fab:fab-2X02SMD" H 3830 4050 20 0001 C CNN F 3 "" H 3800 3900 50 0001 C CNN 1 3800 3900 1 0 0 -1 $EndComp Wire Wire Line 7250 4450 7600 4450 Wire Wire Line 7250 4550 7600 4550 Text Label 7400 4550 0 50 ~ 0 ECHO Text Label 7400 4450 0 50 ~ 0 TRIG Wire Wire Line 7450 4150 7450 4050 Wire Wire Line 7450 4050 8500 4050 Connection ~ 7450 4150 Wire Wire Line 7450 4150 7700 4150 Text Label 8050 4050 0 50 ~ 0 SDA Wire Wire Line 3600 3800 3000 3800 Text Label 3250 3800 0 50 ~ 0 SDA Wire Wire Line 7600 4350 7600 4400 Wire Wire Line 7600 4400 8500 4400 Connection ~ 7600 4350 Wire Wire Line 7600 4350 7700 4350 Text Label 8100 4400 0 50 ~ 0 SCL Text Label 3300 3900 0 50 ~ 0 SCL Wire Wire Line 3900 3800 4500 3800 Wire Wire Line 3900 3900 4500 3900 Text Label 4150 3800 0 50 ~ 0 GND Text Label 4300 3900 0 50 ~ 0 VCC $Comp L Connector:Conn_01x04_Male J2 U 1 1 5CC3E007 P 4400 2350 F 0 "J2" H 4506 2628 50 0000 C CNN F 1 "Conn_01x04_Male" H 4506 2537 50 0000 C CNN F 2 "Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical_SMD_Pin1Left" H 4400 2350 50 0001 C CNN F 3 "~" H 4400 2350 50 0001 C CNN 1 4400 2350 1 0 0 -1 $EndComp Wire Wire Line 4600 2250 5000 2250 Wire Wire Line 4600 2350 5000 2350 Wire Wire Line 4600 2450 5000 2450 Wire Wire Line 4600 2550 5000 2550 Text Label 4750 2250 0 50 ~ 0 VCC Text Label 4800 2350 0 50 ~ 0 TRIG Text Label 4750 2450 0 50 ~ 0 ECHO Text Label 4750 2550 0 50 ~ 0 GND Wire Wire Line 7250 4050 7250 3950 Wire Wire Line 7250 3950 7950 3950 Wire Wire Line 7250 3650 8350 3650 Text Label 7500 3950 0 50 ~ 0 ECHO2 Text Label 7450 3650 0 50 ~ 0 TRIG2 Wire Wire Line 3000 3900 3600 3900 $Comp L fab:RES-US1206 R2 U 1 1 5CC450BB P 8600 2800 F 0 "R2" H 8600 2994 45 0000 C CNN F 1 "0 ohm" H 8600 2910 45 0000 C CNN F 2 "fab:fab-R1206" H 8630 2950 20 0001 C CNN F 3 "" H 8600 2800 50 0001 C CNN 1 8600 2800 0 -1 -1 0 $EndComp $Comp L fab:RES-US1206 R3 U 1 1 5CC4626A P 9100 2800 F 0 "R3" H 9100 2994 45 0000 C CNN F 1 "0 ohm" H 9100 2910 45 0000 C CNN F 2 "fab:fab-R1206" H 9130 2950 20 0001 C CNN F 3 "" H 9100 2800 50 0001 C CNN 1 9100 2800 0 -1 -1 0 $EndComp Wire Wire Line 8600 2600 8600 2150 Wire Wire Line 9100 2600 9100 2100 Wire Wire Line 8600 3000 8600 3450 Wire Wire Line 9100 3000 9100 3450 Text Label 8600 2400 0 50 ~ 0 GND Text Label 8600 3250 0 50 ~ 0 GND Text Label 9100 2350 0 50 ~ 0 VCC Text Label 9100 3200 0 50 ~ 0 VCC $EndSCHEMATC