EESchema Schematic File Version 4 EELAYER 30 0 EELAYER END $Descr A4 11693 8268 encoding utf-8 Sheet 4 9 Title "Democratic Sendcomm" Date "2020-10-20" Rev "0.8.5" Comp "Europalab Devices" Comment1 "Copyright © 2020, Europalab Devices" Comment2 "Fulfilling requirements of 20200210" Comment3 "Pending quality assurance testing" Comment4 "Release revision for manufacturing" $EndDescr $Comp L Connector:Conn_01x06_Male J? U 1 1 6006812D P 4650 6200 AR Path="/5F53D5B5/6006812D" Ref="J?" Part="1" AR Path="/60040981/6006812D" Ref="J5" Part="1" F 0 "J5" H 4758 6581 50 0000 C CNN F 1 "Conn_01x06_Male" H 4758 6490 50 0000 C CNN F 2 "Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Horizontal" H 4650 6200 50 0001 C CNN F 3 "~" H 4650 6200 50 0001 C CNN 1 4650 6200 1 0 0 -1 $EndComp $Comp L power:GND #PWR? U 1 1 60068133 P 5550 6000 AR Path="/5F53D5B5/60068133" Ref="#PWR?" Part="1" AR Path="/60040981/60068133" Ref="#PWR031" Part="1" F 0 "#PWR031" H 5550 5750 50 0001 C CNN F 1 "GND" H 5555 5827 50 0000 C CNN F 2 "" H 5550 6000 50 0001 C CNN F 3 "" H 5550 6000 50 0001 C CNN 1 5550 6000 1 0 0 -1 $EndComp Wire Wire Line 4850 6000 5550 6000 NoConn ~ 4850 6100 NoConn ~ 4850 6500 Wire Wire Line 4850 6300 4950 6300 Wire Wire Line 4850 6400 4950 6400 NoConn ~ 6550 4150 NoConn ~ 6550 4250 $Comp L power:+3V3 #PWR? U 1 1 600B7E73 P 6050 3050 AR Path="/5F53D5B5/600B7E73" Ref="#PWR?" Part="1" AR Path="/60040981/600B7E73" Ref="#PWR027" Part="1" F 0 "#PWR027" H 6050 2900 50 0001 C CNN F 1 "+3V3" H 6065 3223 50 0000 C CNN F 2 "" H 6050 3050 50 0001 C CNN F 3 "" H 6050 3050 50 0001 C CNN 1 6050 3050 1 0 0 -1 $EndComp $Comp L Device:R R? U 1 1 600B7E79 P 6650 3400 AR Path="/5F53D5B5/600B7E79" Ref="R?" Part="1" AR Path="/60040981/600B7E79" Ref="R9" Part="1" F 0 "R9" H 6720 3446 50 0000 L CNN F 1 "100K" H 6720 3355 50 0000 L CNN F 2 "Resistor_SMD:R_0805_2012Metric" V 6580 3400 50 0001 C CNN F 3 "~" H 6650 3400 50 0001 C CNN 1 6650 3400 1 0 0 -1 $EndComp Wire Wire Line 6050 3450 6050 3150 Wire Wire Line 6650 3250 6650 3150 Wire Wire Line 6650 3150 6050 3150 Connection ~ 6050 3150 Wire Wire Line 6050 3150 6050 3050 $Comp L Connector:Conn_ARM_JTAG_SWD_10 J? U 1 1 600B7E84 P 6050 4050 AR Path="/5F53D5B5/600B7E84" Ref="J?" Part="1" AR Path="/60040981/600B7E84" Ref="J4" Part="1" F 0 "J4" H 5750 4650 50 0000 R CNN F 1 "Conn_ARM_JTAG_SWD_10" V 5550 4500 50 0000 R CNN F 2 "Connector:Tag-Connect_TC2050-IDC-NL_2x05_P1.27mm_Vertical" H 6050 4050 50 0001 C CNN F 3 "http://infocenter.arm.com/help/topic/com.arm.doc.ddi0314h/DDI0314H_coresight_components_trm.pdf" V 5700 2800 50 0001 C CNN 1 6050 4050 1 0 0 -1 $EndComp $Comp L power:GND #PWR? U 1 1 600B7E8A P 6000 4750 AR Path="/5F53D5B5/600B7E8A" Ref="#PWR?" Part="1" AR Path="/60040981/600B7E8A" Ref="#PWR028" Part="1" F 0 "#PWR028" H 6000 4500 50 0001 C CNN F 1 "GND" H 6005 4577 50 0000 C CNN F 2 "" H 6000 4750 50 0001 C CNN F 3 "" H 6000 4750 50 0001 C CNN 1 6000 4750 1 0 0 -1 $EndComp Wire Wire Line 5950 4650 5950 4700 Wire Wire Line 5950 4700 6000 4700 Wire Wire Line 6000 4700 6000 4750 Wire Wire Line 6050 4650 6050 4700 Wire Wire Line 6050 4700 6000 4700 Connection ~ 6000 4700 Wire Wire Line 6550 3750 6650 3650 Wire Wire Line 6650 3650 6650 3550 Wire Wire Line 6550 3950 6650 3950 Text HLabel 6650 3950 2 50 Output ~ 0 SWDCLK Text HLabel 6650 3750 2 50 UnSpc ~ 0 CMDRST Text HLabel 4950 6300 2 50 Input ~ 0 UART_RX Text HLabel 4950 6400 2 50 Output ~ 0 UART_TX Text Notes 6200 1900 0 100 ~ 0 SWD Text Notes 4800 5550 0 100 ~ 0 UART $Comp L Connector:Raspberry_Pi_2_3 J3 U 1 1 5F6A7FD9 P 9100 3800 F 0 "J3" H 8450 5050 50 0000 C CNN F 1 "RPIHAT-40W" H 9600 5050 50 0000 C CNN F 2 "Connector_PinSocket_2.54mm:PinSocket_2x20_P2.54mm_Vertical" H 9100 3800 50 0001 C CNN F 3 "https://www.raspberrypi.org/documentation/hardware/raspberrypi/schematics/rpi_SCH_3bplus_1p0_reduced.pdf" H 9100 3800 50 0001 C CNN 1 9100 3800 1 0 0 -1 $EndComp Text HLabel 9900 2900 2 50 BiDi ~ 0 ID_SD Text HLabel 9900 3000 2 50 Output ~ 0 ID_SC NoConn ~ 9900 3200 NoConn ~ 9900 3300 NoConn ~ 9900 3500 NoConn ~ 9900 3600 NoConn ~ 9900 3700 NoConn ~ 9900 3900 NoConn ~ 9900 4000 NoConn ~ 9900 4100 NoConn ~ 9900 4200 NoConn ~ 9900 4300 NoConn ~ 9900 4500 NoConn ~ 9900 4600 NoConn ~ 8900 2500 NoConn ~ 9000 2500 NoConn ~ 8300 3200 NoConn ~ 8300 3300 NoConn ~ 8300 3400 NoConn ~ 8300 3600 NoConn ~ 8300 3700 NoConn ~ 8300 3800 NoConn ~ 8300 4000 NoConn ~ 8300 4100 NoConn ~ 8300 4200 NoConn ~ 8300 4300 NoConn ~ 8300 4400 NoConn ~ 8300 4500 $Comp L power:GND #PWR030 U 1 1 5F6D966D P 8700 5300 F 0 "#PWR030" H 8700 5050 50 0001 C CNN F 1 "GND" H 8705 5127 50 0000 C CNN F 2 "" H 8700 5300 50 0001 C CNN F 3 "" H 8700 5300 50 0001 C CNN 1 8700 5300 1 0 0 -1 $EndComp Wire Wire Line 8700 5100 8700 5200 Wire Wire Line 8800 5100 8800 5200 Wire Wire Line 8800 5200 8700 5200 Connection ~ 8700 5200 Wire Wire Line 8700 5200 8700 5300 Wire Wire Line 8900 5100 8900 5200 Wire Wire Line 8900 5200 8800 5200 Connection ~ 8800 5200 Wire Wire Line 9000 5100 9000 5200 Wire Wire Line 9000 5200 8900 5200 Connection ~ 8900 5200 Wire Wire Line 9100 5100 9100 5200 Wire Wire Line 9100 5200 9000 5200 Connection ~ 9000 5200 Wire Wire Line 9200 5100 9200 5200 Wire Wire Line 9200 5200 9100 5200 Connection ~ 9100 5200 Wire Wire Line 9300 5100 9300 5200 Wire Wire Line 9300 5200 9200 5200 Connection ~ 9200 5200 Wire Wire Line 9400 5100 9400 5200 Wire Wire Line 9400 5200 9300 5200 Connection ~ 9300 5200 $Comp L power:+3V3 #PWR? U 1 1 5F6E4AB0 P 9200 2300 AR Path="/5F53D5B5/5F6E4AB0" Ref="#PWR?" Part="1" AR Path="/60040981/5F6E4AB0" Ref="#PWR026" Part="1" F 0 "#PWR026" H 9200 2150 50 0001 C CNN F 1 "+3V3" H 9215 2473 50 0000 C CNN F 2 "" H 9200 2300 50 0001 C CNN F 3 "" H 9200 2300 50 0001 C CNN 1 9200 2300 1 0 0 -1 $EndComp Wire Wire Line 9200 2500 9200 2400 Wire Wire Line 9300 2500 9300 2400 Wire Wire Line 9300 2400 9200 2400 Connection ~ 9200 2400 Wire Wire Line 9200 2400 9200 2300 Text HLabel 7500 2900 0 50 Input ~ 0 UART_RX Text HLabel 7500 3000 0 50 Output ~ 0 UART_TX $Comp L Device:Jumper_NO_Small JP2 U 1 1 5F6EEE9D P 7900 2900 F 0 "JP2" H 7900 3085 50 0000 C CNN F 1 "Jumper" H 7900 2994 50 0000 C CNN F 2 "Jumper:SolderJumper-2_P1.3mm_Bridged_Pad1.0x1.5mm" H 7900 2900 50 0001 C CNN F 3 "~" H 7900 2900 50 0001 C CNN 1 7900 2900 1 0 0 -1 $EndComp $Comp L Device:Jumper_NO_Small JP3 U 1 1 5F6F4E2A P 7900 3000 F 0 "JP3" H 7900 2925 50 0000 C CNN F 1 "Jumper" H 7900 2850 50 0000 C CNN F 2 "Jumper:SolderJumper-2_P1.3mm_Bridged_Pad1.0x1.5mm" H 7900 3000 50 0001 C CNN F 3 "~" H 7900 3000 50 0001 C CNN 1 7900 3000 1 0 0 -1 $EndComp Wire Wire Line 8000 2900 8300 2900 Wire Wire Line 8000 3000 8300 3000 Wire Wire Line 7800 2900 7500 2900 Wire Wire Line 7800 3000 7500 3000 Text Notes 8900 1900 0 100 ~ 0 HAT Wire Wire Line 3300 2500 2900 2500 Connection ~ 3300 2500 $Comp L power:PWR_FLAG #FLG08 U 1 1 5F59B582 P 3300 2500 F 0 "#FLG08" H 3300 2575 50 0001 C CNN F 1 "PWR_FLAG" H 3300 2673 50 0000 C CNN F 2 "" H 3300 2500 50 0001 C CNN F 3 "~" H 3300 2500 50 0001 C CNN 1 3300 2500 1 0 0 -1 $EndComp Wire Wire Line 4200 4450 2300 4450 Wire Wire Line 4200 3100 4200 4450 Connection ~ 4200 4450 Wire Wire Line 4600 4450 4200 4450 Wire Wire Line 4600 3100 4600 4450 Connection ~ 4600 4450 Wire Wire Line 5000 4450 4600 4450 Wire Wire Line 3200 3200 3100 3200 Wire Wire Line 3200 3100 3100 3100 Text Notes 3200 1900 0 100 ~ 0 USB Text HLabel 5200 2500 2 50 UnSpc ~ 0 USB_BUS Text HLabel 3200 3200 2 50 BiDi ~ 0 USB_P Text HLabel 3200 3100 2 50 BiDi ~ 0 USB_N NoConn ~ 2900 3700 NoConn ~ 2900 3600 Wire Wire Line 2900 2800 4200 2800 Wire Wire Line 4600 2700 4600 2800 Wire Wire Line 2900 2700 4600 2700 $Comp L Device:R R? U 1 1 6005D79D P 4600 2950 AR Path="/5F53D5B5/6005D79D" Ref="R?" Part="1" AR Path="/60040981/6005D79D" Ref="R8" Part="1" F 0 "R8" H 4670 2996 50 0000 L CNN F 1 "2K4" H 4670 2905 50 0000 L CNN F 2 "Resistor_SMD:R_0805_2012Metric" V 4530 2950 50 0001 C CNN F 3 "~" H 4600 2950 50 0001 C CNN 1 4600 2950 1 0 0 -1 $EndComp $Comp L Device:R R? U 1 1 6005D791 P 4200 2950 AR Path="/5F53D5B5/6005D791" Ref="R?" Part="1" AR Path="/60040981/6005D791" Ref="R7" Part="1" F 0 "R7" H 4270 2996 50 0000 L CNN F 1 "2K4" H 4270 2905 50 0000 L CNN F 2 "Resistor_SMD:R_0805_2012Metric" V 4130 2950 50 0001 C CNN F 3 "~" H 4200 2950 50 0001 C CNN 1 4200 2950 1 0 0 -1 $EndComp Connection ~ 2300 4450 Wire Wire Line 5000 2900 5000 4450 Wire Wire Line 4200 2500 5000 2500 Wire Wire Line 5000 2500 5200 2500 Connection ~ 5000 2500 Wire Wire Line 5000 2600 5000 2500 $Comp L Device:R R? U 1 1 6005D77E P 5000 2750 AR Path="/5F53D5B5/6005D77E" Ref="R?" Part="1" AR Path="/60040981/6005D77E" Ref="R6" Part="1" F 0 "R6" H 5070 2796 50 0000 L CNN F 1 "47K" H 5070 2705 50 0000 L CNN F 2 "Resistor_SMD:R_0805_2012Metric" V 4930 2750 50 0001 C CNN F 3 "~" H 5000 2750 50 0001 C CNN 1 5000 2750 1 0 0 -1 $EndComp $Comp L Device:R R? U 1 1 6005D774 P 4050 2500 AR Path="/5F53D5B5/6005D774" Ref="R?" Part="1" AR Path="/60040981/6005D774" Ref="R5" Part="1" F 0 "R5" V 4050 2500 50 0000 C CNN F 1 "47K" V 3934 2500 50 0000 C CNN F 2 "Resistor_SMD:R_0805_2012Metric" V 3980 2500 50 0001 C CNN F 3 "~" H 4050 2500 50 0001 C CNN 1 4050 2500 0 1 1 0 $EndComp Wire Wire Line 3100 3000 2900 3000 Wire Wire Line 3100 3100 3100 3000 Connection ~ 3100 3100 Wire Wire Line 2900 3100 3100 3100 Connection ~ 3100 3000 Wire Wire Line 4000 3000 3100 3000 Wire Wire Line 4000 3300 4000 3000 Wire Wire Line 3900 2500 3800 2500 Wire Wire Line 3800 2500 3300 2500 Connection ~ 3800 2500 Wire Wire Line 3800 3100 3800 2500 Wire Wire Line 2300 4250 2300 4450 Wire Wire Line 2300 4000 2300 4250 Connection ~ 2300 4250 Wire Wire Line 3800 4250 2300 4250 Wire Wire Line 3800 3500 3800 4250 Wire Wire Line 3100 3300 3600 3300 Wire Wire Line 3100 3200 3100 3300 Connection ~ 3100 3200 Wire Wire Line 2900 3200 3100 3200 Connection ~ 3100 3300 Wire Wire Line 2900 3300 3100 3300 $Comp L Power_Protection:NUP2202 U? U 1 1 6005D760 P 3800 3300 AR Path="/5F53D5B5/6005D760" Ref="U?" Part="1" AR Path="/60040981/6005D760" Ref="U5" Part="1" F 0 "U5" H 3850 3500 50 0000 L CNN F 1 "NUP2202" H 3650 3050 50 0000 L CNN F 2 "Package_TO_SOT_SMD:SOT-363_SC-70-6" H 3880 3375 50 0001 C CNN F 3 "http://www.onsemi.ru.com/pub_link/Collateral/NUP2202W1-D.PDF" H 3880 3375 50 0001 C CNN 1 3800 3300 1 0 0 -1 $EndComp Wire Wire Line 2300 4750 2300 4800 Connection ~ 2300 4750 Wire Wire Line 1900 4750 2300 4750 Wire Wire Line 1900 4500 1900 4750 Wire Wire Line 2300 4450 2300 4600 Wire Wire Line 2300 4600 2300 4750 Connection ~ 2300 4600 Wire Wire Line 2100 4600 2300 4600 Wire Wire Line 2100 4500 2100 4600 Wire Wire Line 2100 4200 2100 4100 Wire Wire Line 1900 4100 1900 4200 Wire Wire Line 2100 4100 2000 4100 Wire Wire Line 2000 4100 1900 4100 Connection ~ 2000 4100 Wire Wire Line 2000 4000 2000 4100 $Comp L power:GND #PWR? U 1 1 6005D74C P 2300 4800 AR Path="/5F53D5B5/6005D74C" Ref="#PWR?" Part="1" AR Path="/60040981/6005D74C" Ref="#PWR029" Part="1" F 0 "#PWR029" H 2300 4550 50 0001 C CNN F 1 "GND" H 2305 4627 50 0000 C CNN F 2 "" H 2300 4800 50 0001 C CNN F 3 "" H 2300 4800 50 0001 C CNN 1 2300 4800 1 0 0 -1 $EndComp $Comp L Device:C C? U 1 1 6005D746 P 1900 4350 AR Path="/5F53D5B5/6005D746" Ref="C?" Part="1" AR Path="/60040981/6005D746" Ref="C40" Part="1" F 0 "C40" H 1700 4400 50 0000 L CNN F 1 "4,7nF" H 1600 4300 50 0000 L CNN F 2 "Capacitor_SMD:C_0805_2012Metric" H 1938 4200 50 0001 C CNN F 3 "~" H 1900 4350 50 0001 C CNN 1 1900 4350 1 0 0 -1 $EndComp $Comp L Device:R R? U 1 1 6005D740 P 2100 4350 AR Path="/5F53D5B5/6005D740" Ref="R?" Part="1" AR Path="/60040981/6005D740" Ref="R10" Part="1" F 0 "R10" H 2170 4396 50 0000 L CNN F 1 "1M" H 2170 4305 50 0000 L CNN F 2 "Resistor_SMD:R_0805_2012Metric" V 2030 4350 50 0001 C CNN F 3 "~" H 2100 4350 50 0001 C CNN 1 2100 4350 1 0 0 -1 $EndComp $Comp L Connector:USB_C_Receptacle_USB2.0 J2 U 1 1 5F8FC344 P 2300 3100 F 0 "J2" H 2407 3967 50 0000 C CNN F 1 "USB_C_Receptacle_USB2.0" H 2407 3876 50 0000 C CNN F 2 "Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12" H 2450 3100 50 0001 C CNN F 3 "https://www.usb.org/sites/default/files/documents/usb_type-c.zip" H 2450 3100 50 0001 C CNN 1 2300 3100 1 0 0 -1 $EndComp $Comp L Connector_Generic:Conn_02x04_Top_Bottom J6 U 1 1 5F9DDFF1 P 3100 6150 F 0 "J6" H 3150 6467 50 0000 C CNN F 1 "Conn_02x04_Top_Bottom" H 3150 6376 50 0000 C CNN F 2 "Elabdev:Millmax_Pogopin_2x4_P2.54mm" H 3100 6150 50 0001 C CNN F 3 "~" H 3100 6150 50 0001 C CNN 1 3100 6150 1 0 0 -1 $EndComp Text Notes 2950 5550 0 100 ~ 0 POGO NoConn ~ 2900 6050 NoConn ~ 2900 6150 NoConn ~ 2900 6250 NoConn ~ 2900 6350 NoConn ~ 3400 6050 NoConn ~ 3400 6150 NoConn ~ 3400 6250 NoConn ~ 3400 6350 $Comp L Elabdev:Soldfeld SF1 U 1 1 5FA04057 P 1550 6200 F 0 "SF1" H 1778 6246 50 0000 L CNN F 1 "Soldfeld" H 1778 6155 50 0000 L CNN F 2 "Elabdev:SolderlittleArea_8" H 1550 6000 50 0001 C CNN F 3 "" H 1550 6200 50 0001 C CNN 1 1550 6200 1 0 0 -1 $EndComp Text Notes 1400 5700 0 100 ~ 0 Sold\nfield NoConn ~ 4850 6200 Text Notes 6750 3025 0 50 ~ 0 Crossed\nterminals $Comp L Connector_Generic:Conn_02x05_Odd_Even J20 U 1 1 5FE904F4 P 7650 4350 F 0 "J20" H 7700 4767 50 0000 C CNN F 1 "Conn_02x05" H 7700 4676 50 0000 C CNN F 2 "Connector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical" H 7650 4350 50 0001 C CNN F 3 "~" H 7650 4350 50 0001 C CNN 1 7650 4350 -1 0 0 -1 $EndComp Wire Wire Line 6550 4050 6650 4150 Text HLabel 6650 4050 2 50 BiDi ~ 0 SWDIO Wire Wire Line 6550 4050 6650 4050 Connection ~ 6550 4050 Wire Wire Line 6550 3950 6650 3850 Connection ~ 6550 3950 Wire Wire Line 6650 3850 7050 3850 Wire Wire Line 7050 3850 7150 3950 Wire Wire Line 7150 3950 7150 4250 NoConn ~ 7350 4350 NoConn ~ 7350 4450 NoConn ~ 7850 4450 $Comp L power:GND #PWR? U 1 1 5FEC1744 P 7600 4750 AR Path="/5F53D5B5/5FEC1744" Ref="#PWR?" Part="1" AR Path="/60040981/5FEC1744" Ref="#PWR041" Part="1" F 0 "#PWR041" H 7600 4500 50 0001 C CNN F 1 "GND" H 7605 4577 50 0000 C CNN F 2 "" H 7600 4750 50 0001 C CNN F 3 "" H 7600 4750 50 0001 C CNN 1 7600 4750 1 0 0 -1 $EndComp Wire Wire Line 7850 4550 7950 4550 Wire Wire Line 7950 4550 7950 4700 Wire Wire Line 7950 4700 7600 4700 Wire Wire Line 7600 4700 7600 4750 Wire Wire Line 7850 4350 7950 4350 Wire Wire Line 7950 4350 7950 4550 Connection ~ 7950 4550 Wire Wire Line 7850 4250 7950 4250 Wire Wire Line 7950 4250 7950 4350 Connection ~ 7950 4350 Wire Wire Line 6650 3750 6550 3750 Connection ~ 6550 3750 Wire Wire Line 6650 3650 7250 3650 Wire Wire Line 7250 3650 7250 4550 Wire Wire Line 7250 4550 7350 4550 Connection ~ 6650 3650 Wire Wire Line 7350 4250 7150 4250 Wire Wire Line 6650 4150 7350 4150 $Comp L power:+3V3 #PWR? U 1 1 5FEEDE23 P 7950 3950 AR Path="/5F53D5B5/5FEEDE23" Ref="#PWR?" Part="1" AR Path="/60040981/5FEEDE23" Ref="#PWR040" Part="1" F 0 "#PWR040" H 7950 3800 50 0001 C CNN F 1 "+3V3" H 7965 4123 50 0000 C CNN F 2 "" H 7950 3950 50 0001 C CNN F 3 "" H 7950 3950 50 0001 C CNN 1 7950 3950 1 0 0 -1 $EndComp Wire Wire Line 7850 4150 7950 4150 Wire Wire Line 7950 4150 7950 3950 $EndSCHEMATC