EESchema Schematic File Version 4 LIBS:ulx3s-cache EELAYER 26 0 EELAYER END $Descr A4 11693 8268 encoding utf-8 Sheet 7 11 Title "ULX3S" Date "" Rev "1.0.0" Comp "EMARD" Comment1 "WIFI module ESP32" Comment2 "" Comment3 "" Comment4 "" $EndDescr Text GLabel 7100 4500 3 60 Input ~ 0 SD_D0 Text GLabel 7550 4000 2 60 Input ~ 0 SD_D1 Text GLabel 6300 4500 3 60 Input ~ 0 SD_D3 Text GLabel 7000 4500 3 60 Input ~ 0 SD_CMD Text GLabel 5700 3950 0 60 Input ~ 0 SD_CLK Text GLabel 5700 4050 0 60 Input ~ 0 SD_D2 Text GLabel 7550 3200 2 60 Input ~ 0 WIFI_RXD Text GLabel 7550 3100 2 60 Input ~ 0 WIFI_TXD Text GLabel 7550 4100 2 60 Input ~ 0 WIFI_GPIO0 Text GLabel 7550 2900 2 60 Input ~ 0 JTAG_TDI Text GLabel 7550 3500 2 60 Input ~ 0 JTAG_TDO Text GLabel 7550 3600 2 60 Input ~ 0 JTAG_TCK Text GLabel 7550 3300 2 60 Input ~ 0 JTAG_TMS $Comp L esp-wroom32:ESP-WROOM32 U9 U 1 1 58E5662B P 6650 3450 F 0 "U9" H 5950 4700 60 0000 C CNN F 1 "ESP-WROOM32" H 6950 4700 60 0000 C CNN F 2 "ESP32:ESP32-WROOM" H 7000 4800 60 0001 C CNN F 3 "http://espressif.com/sites/default/files/documentation/esp32_datasheet_en.pdf" H 6200 3900 60 0001 C CNN F 4 "espressif.com" H 6650 3450 60 0001 C CNN "MNF1_URL" F 5 "ESP-WROOM-32" H 6650 3450 60 0001 C CNN "MPN" F 6 "www.mouser.com" H 6650 3450 60 0001 C CNN "Mouser_URL" F 7 "356-ESP-WROOM-32 " H 6650 3450 50 0001 C CNN "Mouser" F 8 "1904-1010-1-ND" H 6650 3450 50 0001 C CNN "Digikey" F 9 "Leave empty" H 6650 3450 50 0001 C CNN "LowCost" 1 6650 3450 1 0 0 -1 $EndComp $Comp L power:GND #PWR0120 U 1 1 58E56E8D P 5300 2750 F 0 "#PWR0120" H 5300 2500 50 0001 C CNN F 1 "GND" H 5300 2600 50 0000 C CNN F 2 "" H 5300 2750 50 0000 C CNN F 3 "" H 5300 2750 50 0000 C CNN 1 5300 2750 0 1 1 0 $EndComp $Comp L power:+3V3 #PWR0119 U 1 1 58E56EA3 P 5150 2850 F 0 "#PWR0119" H 5150 2700 50 0001 C CNN F 1 "+3V3" H 5150 2990 50 0000 C CNN F 2 "" H 5150 2850 50 0000 C CNN F 3 "" H 5150 2850 50 0000 C CNN 1 5150 2850 0 -1 -1 0 $EndComp Wire Wire Line 5300 2750 5700 2750 Wire Wire Line 5150 2850 5700 2850 $Comp L power:+3V3 #PWR0117 U 1 1 58ED6C57 P 4550 2200 F 0 "#PWR0117" H 4550 2050 50 0001 C CNN F 1 "+3V3" H 4550 2340 50 0000 C CNN F 2 "" H 4550 2200 50 0000 C CNN F 3 "" H 4550 2200 50 0000 C CNN 1 4550 2200 1 0 0 -1 $EndComp $Comp L Device:R R34 U 1 1 58ED6C6D P 4550 2350 F 0 "R34" V 4630 2350 50 0000 C CNN F 1 "15k" V 4550 2350 50 0000 C CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 4480 2350 50 0001 C CNN F 3 "" H 4550 2350 50 0000 C CNN 1 4550 2350 1 0 0 -1 $EndComp Text GLabel 4700 2550 2 60 Input ~ 0 WIFI_EN Wire Wire Line 4550 2500 4550 2550 Wire Wire Line 4550 2550 4700 2550 Connection ~ 4550 2550 $Comp L power:GND #PWR0118 U 1 1 58EE2982 P 4550 3500 F 0 "#PWR0118" H 4550 3250 50 0001 C CNN F 1 "GND" H 4550 3350 50 0000 C CNN F 2 "" H 4550 3500 50 0000 C CNN F 3 "" H 4550 3500 50 0000 C CNN 1 4550 3500 1 0 0 -1 $EndComp $Comp L Connector_Generic:Conn_02x01 J3 U 1 1 58EE29FF P 4550 3300 F 0 "J3" H 4600 3400 50 0000 C CNN F 1 "WIFI_OFF" H 4600 3200 50 0000 C CNN F 2 "Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical" H 4550 2100 50 0001 C CNN F 3 "" H 4550 2100 50 0000 C CNN F 4 "Leave empty" H 4550 3300 60 0001 C CNN "Note" 1 4550 3300 0 -1 -1 0 $EndComp Text Notes 8500 3300 0 60 ~ 0 Programming pins:\nTXD RXD EN GPIO0 $Comp L Device:R R35 U 1 1 58FD4C5D P 4550 2750 F 0 "R35" V 4630 2750 50 0000 C CNN F 1 "680" V 4550 2750 50 0000 C CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 4480 2750 50 0001 C CNN F 3 "" H 4550 2750 50 0000 C CNN 1 4550 2750 1 0 0 -1 $EndComp $Comp L Device:C C21 U 1 1 5924A09B P 3650 3100 F 0 "C21" H 3675 3200 50 0000 L CNN F 1 "22uF" H 3675 3000 50 0000 L CNN F 2 "Capacitor_SMD:C_0805_2012Metric" H 3688 2950 50 0001 C CNN F 3 "" H 3650 3100 50 0000 C CNN F 4 "www.yageo.com" H 3650 3100 50 0001 C CNN "MNF1_URL" F 5 "CC0805ZKY5V5BB226" H 3650 3100 50 0001 C CNN "MPN" 1 3650 3100 1 0 0 -1 $EndComp $Comp L power:+3V3 #PWR0115 U 1 1 5924A1EA P 3650 2950 F 0 "#PWR0115" H 3650 2800 50 0001 C CNN F 1 "+3V3" H 3650 3090 50 0000 C CNN F 2 "" H 3650 2950 50 0000 C CNN F 3 "" H 3650 2950 50 0000 C CNN 1 3650 2950 1 0 0 -1 $EndComp $Comp L power:GND #PWR0116 U 1 1 5924A206 P 3650 3250 F 0 "#PWR0116" H 3650 3000 50 0001 C CNN F 1 "GND" H 3650 3100 50 0000 C CNN F 2 "" H 3650 3250 50 0000 C CNN F 3 "" H 3650 3250 50 0000 C CNN 1 3650 3250 1 0 0 -1 $EndComp Text Notes 5900 2050 0 60 ~ 0 WiFi and SDcard connected to\nBANK6 on "usb" sheet Text Notes 9250 4650 0 60 ~ 0 Strapping pins\n(avoid using to avoid\nboot problems)\nGPIO0,2,4,5,12,15 Text Notes 2750 5350 0 60 ~ 0 ESP32 ADC capable pins\nGPIO36,39,34,35,32,33,25,26,27,\nGPIO14,12,13,15 - shared with HSPI/JTAG\nConnected to BANK7 on "gpio" sheet Text Notes 3650 6000 0 60 ~ 0 ESP32 HSPI pins\nGPIO12: MISO\nGPIO13: MOSI\nGPIO14: SCK\nGPIO15: SS Text Notes 4550 6300 0 60 ~ 0 ESP32 JTAG slave interface\nEN: TRST_N\nGPIO15: TDO\nGPIO12: TDI\nGPIO13: TCK\nGPIO14: TMS\nFLASH over JTAG\nnot yet supported. Text Notes 2750 6000 0 60 ~ 0 ESP32 VSPI pins\nGPIO5: SS\nGPIO18: SCK\nGPIO19: MISO\nGPIO23: MOSI Text GLabel 5700 3250 0 60 Input ~ 0 GP13 Text GLabel 5700 3350 0 60 Input ~ 0 GN13 Text GLabel 5700 3450 0 60 Input ~ 0 GP12 Text GLabel 5700 3550 0 60 Input ~ 0 GN12 Text GLabel 5700 3650 0 60 Input ~ 0 GP11 Text GLabel 5700 3750 0 60 Input ~ 0 GN11 Text GLabel 7550 3900 2 60 Input ~ 0 WIFI_GPIO16 $Comp L power:GND #PWR0123 U 1 1 59C1BF96 P 7650 2800 F 0 "#PWR0123" H 7650 2550 50 0001 C CNN F 1 "GND" H 7650 2650 50 0000 C CNN F 2 "" H 7650 2800 50 0001 C CNN F 3 "" H 7650 2800 50 0001 C CNN 1 7650 2800 0 -1 -1 0 $EndComp Wire Wire Line 7550 2800 7650 2800 $Comp L power:GND #PWR0122 U 1 1 59C1BFCC P 7650 2700 F 0 "#PWR0122" H 7650 2450 50 0001 C CNN F 1 "GND" H 7650 2550 50 0000 C CNN F 2 "" H 7650 2700 50 0001 C CNN F 3 "" H 7650 2700 50 0001 C CNN 1 7650 2700 0 -1 -1 0 $EndComp Wire Wire Line 7550 2700 7650 2700 Text GLabel 7550 3000 2 60 Input ~ 0 PROG_DONE Text Notes 8500 3050 0 60 ~ 0 PROG_DONE on\n"flash" sheet $Comp L power:GND #PWR0121 U 1 1 59DEDA17 P 6200 4900 F 0 "#PWR0121" H 6200 4650 50 0001 C CNN F 1 "GND" H 6200 4750 50 0000 C CNN F 2 "" H 6200 4900 50 0001 C CNN F 3 "" H 6200 4900 50 0001 C CNN 1 6200 4900 1 0 0 -1 $EndComp Wire Wire Line 6200 4500 6200 4900 Wire Wire Line 4550 2900 4550 2950 Text GLabel 7550 3800 2 60 Input ~ 0 WIFI_GPIO17 Wire Wire Line 4550 2950 5700 2950 Text Label 5350 2950 0 60 ~ 0 WIFIEN Connection ~ 4550 2950 Text Notes 1350 4500 0 60 ~ 0 GPIO12 probably should be held low at reset or disconnected\nother option is to burn flash voltage efuse for 3.3V operation\nfor GPIO2 and GPIO12 bootstrapping considerations, read\nhttps://github.com/espressif/esp-idf/tree/master/examples/storage/sd_card Text Notes 1350 4800 0 60 ~ 0 GPIO25,26 are DAC channels that can directly replay\naudio material over i2s bus Text Notes 1350 4000 0 60 ~ 0 SD card connected according to\nArduino->Examples->ESP32->SD_MMC_Test\nhttps://github.com/espressif/esp-idf/blob/\nmaster/examples/storage/sd_card/README.md\n Text Notes 4500 4000 0 60 ~ 0 GN10 v1.7 Text Notes 4550 4100 0 60 ~ 0 GP9 v1.7 Text Notes 6350 5750 1 60 ~ 0 GN9 v1.7 Text Notes 7050 6350 1 60 ~ 0 WIFI_GPIO15 v1.7 Text Notes 7150 6200 1 60 ~ 0 WIFI_LED v1.7 Text GLabel 7550 3700 2 60 Input ~ 0 WIFI_GPIO5 Text Notes 8550 3750 0 60 ~ 0 NC v1.7, LED v1.8 Text Notes 8550 3850 0 60 ~ 0 NC v1.7 Text Notes 8550 4050 0 60 ~ 0 NC v1.7 Wire Wire Line 7100 5200 7100 5300 Wire Wire Line 7100 5300 8350 5300 Wire Wire Line 8350 5300 8350 3700 Wire Wire Line 8350 3700 8200 3700 Text Label 7350 5300 0 60 ~ 0 LED Wire Wire Line 6800 4550 6800 5050 Wire Wire Line 6800 5050 7100 5050 Wire Wire Line 7100 5050 7100 4900 Wire Wire Line 6600 4550 6600 5150 Wire Wire Line 6600 5150 7000 5150 Wire Wire Line 7000 5150 7000 4950 Wire Wire Line 6900 4550 6900 5500 Wire Wire Line 6900 5500 8250 5500 Wire Wire Line 8250 5500 8250 4000 Wire Wire Line 8250 4000 7950 4000 Wire Wire Line 6700 4550 6700 5300 Wire Wire Line 6700 5300 5000 5300 Wire Wire Line 5000 5300 5000 3950 Wire Wire Line 5000 3950 5250 3950 Wire Wire Line 6400 4550 6400 5200 Wire Wire Line 6400 5200 5100 5200 Wire Wire Line 5100 5200 5100 4050 Wire Wire Line 5100 4050 5250 4050 Wire Wire Line 6300 4900 6300 5100 Wire Wire Line 6300 5100 6500 5100 Wire Wire Line 6500 5100 6500 4550 Wire Wire Line 7000 5200 7000 5400 Wire Wire Line 7000 5400 8500 5400 Wire Wire Line 8500 5400 8500 3800 Wire Wire Line 8500 3800 8200 3800 Text Label 7350 5400 0 60 ~ 0 WIFI_GPIO17 Text Notes 7350 5700 0 60 ~ 0 LED and WIFI_GPIO17\nto solder pads of PCB Text Notes 4500 3900 0 60 ~ 0 GP10 v1.7 NoConn ~ 5700 3850 NoConn ~ 5700 3150 NoConn ~ 5700 3050 Wire Wire Line 4550 2550 4550 2600 Wire Wire Line 4550 2950 4550 3000 $EndSCHEMATC