EESchema Schematic File Version 4 LIBS:ulx3s-cache EELAYER 30 0 EELAYER END $Descr A4 11693 8268 encoding utf-8 Sheet 7 11 Title "ULX3S" Date "" Rev "1.0.2" Comp "EMARD" Comment1 "WIFI module ESP32" Comment2 "" Comment3 "" Comment4 "" $EndDescr Text GLabel 7550 2650 2 60 Input ~ 0 SD_D0 Text GLabel 7550 3150 2 60 Input ~ 0 SD_D3 Text GLabel 7550 3350 2 60 Input ~ 0 SD_CMD Text GLabel 7550 3250 2 60 Input ~ 0 SD_CLK Text GLabel 7550 3050 2 60 Input ~ 0 SD_D2 Text GLabel 9050 2750 2 60 Input ~ 0 WIFI_RXD Text GLabel 9050 2550 2 60 Input ~ 0 WIFI_TXD Text GLabel 7550 2450 2 60 Input ~ 0 WIFI_GPIO0 Text GLabel 7550 4050 2 60 Input ~ 0 JTAG_TDI Text GLabel 7550 3750 2 60 Input ~ 0 JTAG_TDO Text GLabel 7550 3650 2 60 Input ~ 0 JTAG_TCK Text GLabel 7550 3850 2 60 Input ~ 0 JTAG_TMS $Comp L RF_Module:ESP32-WROOM-32 U9 U 1 1 58E5662B P 6650 3650 F 0 "U9" H 6200 5000 60 0000 C CNN F 1 "ESP32-WROOM" H 7050 5000 60 0000 C CNN F 2 "ESP32:ESP32-WROOM-stencil" H 7000 5000 60 0001 C CNN F 3 "http://espressif.com/sites/default/files/documentation/esp32_datasheet_en.pdf" H 6200 4100 60 0001 C CNN F 4 "espressif.com" H 6650 3650 60 0001 C CNN "MNF1_URL" F 5 "ESP-WROOM-32" H 6650 3650 60 0001 C CNN "MPN" F 6 "356-ESP-WROOM-32 " H 6650 3650 50 0001 C CNN "Mouser" F 7 "3.32€" H 6650 3650 50 0001 C CNN "price100_Mouser" F 8 "1904-1010-1-ND" H 6650 3650 50 0001 C CNN "Digikey" F 9 "Leave empty" H 6650 3650 50 0001 C CNN "LowCost" F 10 "FU001" H 6650 3650 50 0001 C CNN "Koncar" 1 6650 3650 1 0 0 -1 $EndComp $Comp L power:+3V3 #PWR0119 U 1 1 58E56EA3 P 6650 2250 F 0 "#PWR0119" H 6650 2100 50 0001 C CNN F 1 "+3V3" H 6650 2390 50 0000 C CNN F 2 "" H 6650 2250 50 0000 C CNN F 3 "" H 6650 2250 50 0000 C CNN 1 6650 2250 1 0 0 -1 $EndComp $Comp L power:+3V3 #PWR0117 U 1 1 58ED6C57 P 4900 1700 F 0 "#PWR0117" H 4900 1550 50 0001 C CNN F 1 "+3V3" H 4900 1840 50 0000 C CNN F 2 "" H 4900 1700 50 0000 C CNN F 3 "" H 4900 1700 50 0000 C CNN 1 4900 1700 1 0 0 -1 $EndComp $Comp L Device:R R34 U 1 1 58ED6C6D P 4900 1850 F 0 "R34" V 4980 1850 50 0000 C CNN F 1 "15k" V 4900 1850 50 0000 C CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 4830 1850 50 0001 C CNN F 3 "" H 4900 1850 50 0000 C CNN 1 4900 1850 1 0 0 -1 $EndComp Text GLabel 5050 2050 2 60 Input ~ 0 WIFI_EN Wire Wire Line 4900 2000 4900 2050 Wire Wire Line 4900 2050 5050 2050 Connection ~ 4900 2050 $Comp L power:GND #PWR0118 U 1 1 58EE2982 P 4900 3000 F 0 "#PWR0118" H 4900 2750 50 0001 C CNN F 1 "GND" H 4900 2850 50 0000 C CNN F 2 "" H 4900 3000 50 0000 C CNN F 3 "" H 4900 3000 50 0000 C CNN 1 4900 3000 1 0 0 -1 $EndComp $Comp L Connector_Generic:Conn_02x01 J3 U 1 1 58EE29FF P 4900 2800 F 0 "J3" H 4950 2900 50 0000 C CNN F 1 "WIFI_OFF" H 4950 2700 50 0000 C CNN F 2 "Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical" H 4900 1600 50 0001 C CNN F 3 "" H 4900 1600 50 0000 C CNN F 4 "Leave empty" H 4900 2800 60 0001 C CNN "Note" F 5 "T" H 4900 2800 50 0001 C CNN "Side" 1 4900 2800 0 -1 -1 0 $EndComp Text Notes 9650 2700 0 60 ~ 0 Programming pins:\nTXD RXD EN GPIO0 $Comp L Device:R R35 U 1 1 58FD4C5D P 4900 2250 F 0 "R35" V 4980 2250 50 0000 C CNN F 1 "549" V 4900 2250 50 0000 C CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 4830 2250 50 0001 C CNN F 3 "" H 4900 2250 50 0000 C CNN 1 4900 2250 1 0 0 -1 $EndComp $Comp L Device:C C21 U 1 1 5924A09B P 4900 3800 F 0 "C21" H 4925 3900 50 0000 L CNN F 1 "22uF" H 4925 3700 50 0000 L CNN F 2 "Capacitor_SMD:C_0805_2012Metric" H 4938 3650 50 0001 C CNN F 3 "" H 4900 3800 50 0000 C CNN F 4 "www.yageo.com" H 4900 3800 50 0001 C CNN "MNF1_URL" F 5 "CC0805ZKY5V5BB226" H 4900 3800 50 0001 C CNN "MPN" 1 4900 3800 1 0 0 -1 $EndComp $Comp L power:+3V3 #PWR0115 U 1 1 5924A1EA P 4900 3650 F 0 "#PWR0115" H 4900 3500 50 0001 C CNN F 1 "+3V3" H 4900 3790 50 0000 C CNN F 2 "" H 4900 3650 50 0000 C CNN F 3 "" H 4900 3650 50 0000 C CNN 1 4900 3650 1 0 0 -1 $EndComp $Comp L power:GND #PWR0116 U 1 1 5924A206 P 4900 3950 F 0 "#PWR0116" H 4900 3700 50 0001 C CNN F 1 "GND" H 4900 3800 50 0000 C CNN F 2 "" H 4900 3950 50 0000 C CNN F 3 "" H 4900 3950 50 0000 C CNN 1 4900 3950 1 0 0 -1 $EndComp Text Notes 5900 1850 0 60 ~ 0 WiFi and SDcard connected to\nBANK6 on "usb" sheet Text Notes 8300 5600 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 7550 4750 2 60 Input ~ 0 GP13 Text GLabel 7550 4550 2 60 Input ~ 0 GP12 Text GLabel 7550 4450 2 60 Input ~ 0 GN12 Text GLabel 7550 4250 2 60 Input ~ 0 GP11 Text GLabel 7550 4150 2 60 Input ~ 0 GN11 Text GLabel 7550 3950 2 60 Input ~ 0 PROG_DONE Text Notes 8300 4000 0 60 ~ 0 PROG_DONE on\n"flash" sheet $Comp L power:GND #PWR0121 U 1 1 59DEDA17 P 6650 5050 F 0 "#PWR0121" H 6650 4800 50 0001 C CNN F 1 "GND" H 6650 4900 50 0000 C CNN F 2 "" H 6650 5050 50 0001 C CNN F 3 "" H 6650 5050 50 0001 C CNN 1 6650 5050 1 0 0 -1 $EndComp Wire Wire Line 4900 2400 4900 2450 Text GLabel 7550 3550 2 60 Input ~ 0 WIFI_GPIO17 Wire Wire Line 4900 2450 6050 2450 Text Label 5700 2450 0 60 ~ 0 WIFIEN Connection ~ 4900 2450 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 8300 3300 0 60 ~ 0 GN10 v1.7 Text Notes 8300 3100 0 60 ~ 0 GP9 v1.7 Text Notes 8300 3200 0 60 ~ 0 GN9 v1.7 Text Notes 8300 3400 0 60 ~ 0 WIFI_GPIO15 v1.7 Text Notes 8300 2700 0 60 ~ 0 WIFI_LED v1.7 Text GLabel 7550 2950 2 60 Input ~ 0 WIFI_GPIO5 Text Notes 8300 3000 0 60 ~ 0 NC v1.7, LED v1.8 Text Notes 8300 3600 0 60 ~ 0 NC v1.7 Text Notes 8300 2900 0 60 ~ 0 NC v1.7 Text Notes 6150 5600 0 60 ~ 0 LED and WIFI_GPIO17\nto solder pads of PCB Text Notes 8300 4400 0 60 ~ 0 GP10 v1.7 NoConn ~ 6050 2750 NoConn ~ 6050 2650 Wire Wire Line 4900 2050 4900 2100 Wire Wire Line 4900 2450 4900 2500 Text Notes 8300 4300 0 60 ~ 0 GN11