1EESchema Schematic File Version 2 2LIBS:power 3LIBS:device 4LIBS:transistors 5LIBS:conn 6LIBS:linear 7LIBS:regul 8LIBS:74xx 9LIBS:cmos4000 10LIBS:adc-dac 11LIBS:memory 12LIBS:xilinx 13LIBS:microcontrollers 14LIBS:dsp 15LIBS:microchip 16LIBS:analog_switches 17LIBS:motorola 18LIBS:texas 19LIBS:intel 20LIBS:audio 21LIBS:interface 22LIBS:digital-audio 23LIBS:philips 24LIBS:display 25LIBS:cypress 26LIBS:siliconi 27LIBS:opto 28LIBS:atmel 29LIBS:contrib 30LIBS:valves 31LIBS:walt_misc 32LIBS:teensy 33LIBS:WALTsm-cache 34EELAYER 25 0 35EELAYER END 36$Descr USLetter 11000 8500 37encoding utf-8 38Sheet 1 1 39Title "WALT Latency Timer" 40Date "" 41Rev "" 42Comp "" 43Comment1 "" 44Comment2 "" 45Comment3 "" 46Comment4 "" 47$EndDescr 48$Comp 49L TeensyLC_with_headers U1 50U 1 1 576468C7 51P 2650 2750 52F 0 "U1" H 2300 3500 50 0000 C CNN 53F 1 "TeensyLC_with_headers" V 2550 2750 50 0000 C CNN 54F 2 "Housings_DIP:DIP-28_W15.24mm" V 2950 2750 50 0001 C CNN 55F 3 "https://www.pjrc.com/teensy/teensyLC.html" V 2850 2750 50 0001 C CNN 56 1 2650 2750 57 1 0 0 -1 58$EndComp 59$Comp 60L GND #PWR01 61U 1 1 57646954 62P 1650 2000 63F 0 "#PWR01" H 1650 1750 50 0001 C CNN 64F 1 "GND" H 1650 1850 50 0000 C CNN 65F 2 "" H 1650 2000 50 0000 C CNN 66F 3 "" H 1650 2000 50 0000 C CNN 67 1 1650 2000 68 -1 0 0 1 69$EndComp 70$Comp 71L GND #PWR02 72U 1 1 5764697D 73P 3950 2100 74F 0 "#PWR02" H 3950 1850 50 0001 C CNN 75F 1 "GND" H 3950 1950 50 0000 C CNN 76F 2 "" H 3950 2100 50 0000 C CNN 77F 3 "" H 3950 2100 50 0000 C CNN 78 1 3950 2100 79 -1 0 0 1 80$EndComp 81$Comp 82L +3V3 #PWR03 83U 1 1 57646997 84P 4200 2100 85F 0 "#PWR03" H 4200 1950 50 0001 C CNN 86F 1 "+3V3" H 4200 2240 50 0000 C CNN 87F 2 "" H 4200 2100 50 0000 C CNN 88F 3 "" H 4200 2100 50 0000 C CNN 89 1 4200 2100 90 1 0 0 -1 91$EndComp 92Text Label 4050 2400 0 60 ~ 0 93MIC_PIN 94Text Label 3950 2500 0 60 ~ 0 95AUDIO_PIN 96Text Label 3700 2700 0 60 ~ 0 97PD_SCREEN_PIN 98Text Label 4100 3100 0 60 ~ 0 99GZ_PIN 100Text Label 4050 3200 0 60 ~ 0 101GXY_PIN 102$Comp 103L Photodiode D1 104U 1 1 57646A24 105P 4400 3600 106F 0 "D1" H 4400 3700 50 0000 C CNN 107F 1 "Photodiode" H 4394 3471 50 0001 C CNN 108F 2 "walt_footprints:BPW34_DIP2" H 4400 3600 50 0001 C CNN 109F 3 "" H 4400 3600 50 0000 C CNN 110 1 4400 3600 111 0 1 1 0 112$EndComp 113$Comp 114L GND #PWR04 115U 1 1 57646A4B 116P 4400 3900 117F 0 "#PWR04" H 4400 3650 50 0001 C CNN 118F 1 "GND" H 4400 3750 50 0000 C CNN 119F 2 "" H 4400 3900 50 0000 C CNN 120F 3 "" H 4400 3900 50 0000 C CNN 121 1 4400 3900 122 1 0 0 -1 123$EndComp 124$Comp 125L R R1 126U 1 1 57646BD5 127P 2450 800 128F 0 "R1" V 2530 800 50 0000 C CNN 129F 1 "330" V 2450 800 50 0000 C CNN 130F 2 "walt_footprints:R_0603_pad07mm_long" V 2380 800 50 0001 C CNN 131F 3 "" H 2450 800 50 0000 C CNN 132 1 2450 800 133 0 -1 -1 0 134$EndComp 135$Comp 136L R R2 137U 1 1 57646C37 138P 2450 1200 139F 0 "R2" V 2530 1200 50 0000 C CNN 140F 1 "330" V 2450 1200 50 0000 C CNN 141F 2 "walt_footprints:R_0603_pad07mm_long" V 2380 1200 50 0001 C CNN 142F 3 "" H 2450 1200 50 0000 C CNN 143 1 2450 1200 144 0 -1 -1 0 145$EndComp 146$Comp 147L GND #PWR05 148U 1 1 57646C65 149P 3400 800 150F 0 "#PWR05" H 3400 550 50 0001 C CNN 151F 1 "GND" H 3400 650 50 0000 C CNN 152F 2 "" H 3400 800 50 0000 C CNN 153F 3 "" H 3400 800 50 0000 C CNN 154 1 3400 800 155 0 -1 -1 0 156$EndComp 157$Comp 158L LED D3 159U 1 1 57646CD9 160P 3000 800 161F 0 "D3" H 3000 900 50 0000 C CNN 162F 1 "LED" H 3000 700 50 0000 C CNN 163F 2 "walt_footprints:R_0603_pad07mm_long" H 3000 800 50 0001 C CNN 164F 3 "" H 3000 800 50 0000 C CNN 165 1 3000 800 166 -1 0 0 1 167$EndComp 168$Comp 169L LED D4 170U 1 1 57646D13 171P 3000 1200 172F 0 "D4" H 3000 1300 50 0000 C CNN 173F 1 "LED" H 3000 1100 50 0000 C CNN 174F 2 "walt_footprints:R_0603_pad07mm_long" H 3000 1200 50 0001 C CNN 175F 3 "" H 3000 1200 50 0000 C CNN 176 1 3000 1200 177 -1 0 0 1 178$EndComp 179$Comp 180L GND #PWR06 181U 1 1 57646D3D 182P 3400 1200 183F 0 "#PWR06" H 3400 950 50 0001 C CNN 184F 1 "GND" H 3400 1050 50 0000 C CNN 185F 2 "" H 3400 1200 50 0000 C CNN 186F 3 "" H 3400 1200 50 0000 C CNN 187 1 3400 1200 188 0 -1 -1 0 189$EndComp 190Text Label 1600 1200 0 60 ~ 0 191DEBUG_LED1 192Text Label 1600 800 0 60 ~ 0 193DEBUG_LED2 194$Comp 195L +3V3 #PWR07 196U 1 1 57647B1C 197P 2750 5100 198F 0 "#PWR07" H 2750 4950 50 0001 C CNN 199F 1 "+3V3" H 2750 5240 50 0000 C CNN 200F 2 "" H 2750 5100 50 0000 C CNN 201F 3 "" H 2750 5100 50 0000 C CNN 202 1 2750 5100 203 1 0 0 -1 204$EndComp 205$Comp 206L ADXL335 U2 207U 1 1 57647D5A 208P 3550 5800 209F 0 "U2" H 2950 6450 50 0000 L CNN 210F 1 "ADXL335" H 3800 6450 50 0000 L CNN 211F 2 "Housings_DFN_QFN:QFN-16-1EP_4x4mm_Pitch0.65mm" H 3550 5500 50 0001 C CNN 212F 3 "" H 3550 5500 50 0000 C CNN 213 1 3550 5800 214 1 0 0 -1 215$EndComp 216$Comp 217L GND #PWR08 218U 1 1 57647DD6 219P 2750 6500 220F 0 "#PWR08" H 2750 6250 50 0001 C CNN 221F 1 "GND" H 2750 6350 50 0000 C CNN 222F 2 "" H 2750 6500 50 0000 C CNN 223F 3 "" H 2750 6500 50 0000 C CNN 224 1 2750 6500 225 1 0 0 -1 226$EndComp 227Text Label 4650 5600 0 60 ~ 0 228GZ_PIN 229Text Label 4550 5500 0 60 ~ 0 230GXY_PIN 231$Comp 232L GND #PWR09 233U 1 1 5764825A 234P 6200 3300 235F 0 "#PWR09" H 6200 3050 50 0001 C CNN 236F 1 "GND" H 6200 3150 50 0000 C CNN 237F 2 "" H 6200 3300 50 0000 C CNN 238F 3 "" H 6200 3300 50 0000 C CNN 239 1 6200 3300 240 0 -1 -1 0 241$EndComp 242$Comp 243L +3V3 #PWR010 244U 1 1 576482AD 245P 6000 2400 246F 0 "#PWR010" H 6000 2250 50 0001 C CNN 247F 1 "+3V3" H 6000 2540 50 0000 C CNN 248F 2 "" H 6000 2400 50 0000 C CNN 249F 3 "" H 6000 2400 50 0000 C CNN 250 1 6000 2400 251 1 0 0 -1 252$EndComp 253$Comp 254L GND #PWR011 255U 1 1 57648307 256P 5600 2600 257F 0 "#PWR011" H 5600 2350 50 0001 C CNN 258F 1 "GND" H 5600 2450 50 0000 C CNN 259F 2 "" H 5600 2600 50 0000 C CNN 260F 3 "" H 5600 2600 50 0000 C CNN 261 1 5600 2600 262 -1 0 0 1 263$EndComp 264$Comp 265L LM321MFX U3 266U 1 1 576483C4 267P 6100 2900 268F 0 "U3" H 6150 3100 50 0000 C CNN 269F 1 "LM321MFX" H 6300 2700 50 0000 C CNN 270F 2 "TO_SOT_Packages_SMD:SOT-23-5" H 6050 2600 50 0001 L CNN 271F 3 "" H 6150 3100 50 0000 C CNN 272 1 6100 2900 273 1 0 0 -1 274$EndComp 275$Comp 276L R R3 277U 1 1 57648608 278P 6150 3600 279F 0 "R3" V 6230 3600 50 0000 C CNN 280F 1 "510k" V 6150 3600 50 0000 C CNN 281F 2 "walt_footprints:R_0603_pad07mm_long" V 6080 3600 50 0001 C CNN 282F 3 "" H 6150 3600 50 0000 C CNN 283 1 6150 3600 284 0 -1 -1 0 285$EndComp 286$Comp 287L GND #PWR012 288U 1 1 57648798 289P 5600 4300 290F 0 "#PWR012" H 5600 4050 50 0001 C CNN 291F 1 "GND" H 5600 4150 50 0000 C CNN 292F 2 "" H 5600 4300 50 0000 C CNN 293F 3 "" H 5600 4300 50 0000 C CNN 294 1 5600 4300 295 1 0 0 -1 296$EndComp 297$Comp 298L Photodiode D2 299U 1 1 576487CA 300P 5600 3950 301F 0 "D2" H 5600 4050 50 0000 C CNN 302F 1 "Photodiode" H 5594 3821 50 0001 C CNN 303F 2 "walt_footprints:BPW34_DIP2" H 5600 3950 50 0001 C CNN 304F 3 "" H 5600 3950 50 0000 C CNN 305 1 5600 3950 306 0 1 1 0 307$EndComp 308$Comp 309L JACK_TRRS J1 310U 1 1 5764949B 311P 10000 1500 312F 0 "J1" H 10200 1850 50 0000 C CNN 313F 1 "JACK_TRRS" H 9950 1250 50 0000 C CNN 314F 2 "walt_footprints:TRRS_SJ_43514" H 9800 1350 50 0001 C CNN 315F 3 "" H 9800 1350 50 0000 C CNN 316 1 10000 1500 317 1 0 0 -1 318$EndComp 319$Comp 320L R R7 321U 1 1 57649565 322P 9200 2250 323F 0 "R7" V 9280 2250 50 0000 C CNN 324F 1 "100" V 9200 2250 50 0000 C CNN 325F 2 "walt_footprints:R_0603_pad07mm_long" V 9130 2250 50 0001 C CNN 326F 3 "" H 9200 2250 50 0000 C CNN 327 1 9200 2250 328 -1 0 0 1 329$EndComp 330$Comp 331L GND #PWR013 332U 1 1 57649633 333P 9200 2600 334F 0 "#PWR013" H 9200 2350 50 0001 C CNN 335F 1 "GND" H 9200 2450 50 0000 C CNN 336F 2 "" H 9200 2600 50 0000 C CNN 337F 3 "" H 9200 2600 50 0000 C CNN 338 1 9200 2600 339 1 0 0 -1 340$EndComp 341Text Label 8600 1900 0 60 ~ 0 342AUDIO_PIN 343$Comp 344L C C1 345U 1 1 5764985B 346P 9050 1300 347F 0 "C1" H 9075 1400 50 0000 L CNN 348F 1 "0.1uF" H 9075 1200 50 0000 L CNN 349F 2 "Capacitors_SMD:C_0805" H 9088 1150 50 0001 C CNN 350F 3 "" H 9050 1300 50 0000 C CNN 351 1 9050 1300 352 0 1 1 0 353$EndComp 354$Comp 355L R R4 356U 1 1 576498AB 357P 8550 1300 358F 0 "R4" V 8630 1300 50 0000 C CNN 359F 1 "3,3k" V 8550 1300 50 0000 C CNN 360F 2 "walt_footprints:R_0603_pad07mm_long" V 8480 1300 50 0001 C CNN 361F 3 "" H 8550 1300 50 0000 C CNN 362 1 8550 1300 363 0 -1 -1 0 364$EndComp 365$Comp 366L R R5 367U 1 1 576498E4 368P 8800 1050 369F 0 "R5" V 8880 1050 50 0000 C CNN 370F 1 "100" V 8800 1050 50 0000 C CNN 371F 2 "walt_footprints:R_0603_pad07mm_long" V 8730 1050 50 0001 C CNN 372F 3 "" H 8800 1050 50 0000 C CNN 373 1 8800 1050 374 1 0 0 -1 375$EndComp 376$Comp 377L R R6 378U 1 1 5764991F 379P 9300 1050 380F 0 "R6" V 9380 1050 50 0000 C CNN 381F 1 "3.3k" V 9300 1050 50 0000 C CNN 382F 2 "walt_footprints:R_0603_pad07mm_long" V 9230 1050 50 0001 C CNN 383F 3 "" H 9300 1050 50 0000 C CNN 384 1 9300 1050 385 1 0 0 -1 386$EndComp 387$Comp 388L GND #PWR014 389U 1 1 57649B4B 390P 9300 800 391F 0 "#PWR014" H 9300 550 50 0001 C CNN 392F 1 "GND" H 9300 650 50 0000 C CNN 393F 2 "" H 9300 800 50 0000 C CNN 394F 3 "" H 9300 800 50 0000 C CNN 395 1 9300 800 396 -1 0 0 1 397$EndComp 398$Comp 399L GND #PWR015 400U 1 1 57649B86 401P 8800 800 402F 0 "#PWR015" H 8800 550 50 0001 C CNN 403F 1 "GND" H 8800 650 50 0000 C CNN 404F 2 "" H 8800 800 50 0000 C CNN 405F 3 "" H 8800 800 50 0000 C CNN 406 1 8800 800 407 -1 0 0 1 408$EndComp 409Text Label 7800 1300 0 60 ~ 0 410MIC_PIN 411NoConn ~ 4250 5800 412NoConn ~ 4250 5900 413NoConn ~ 4250 6000 414NoConn ~ 4250 6100 415NoConn ~ 4250 6200 416NoConn ~ 4250 6300 417Text Label 7000 2900 0 60 ~ 0 418PD_SCREEN_PIN 419$Comp 420L +3V3 #PWR016 421U 1 1 5764A52C 422P 800 800 423F 0 "#PWR016" H 800 650 50 0001 C CNN 424F 1 "+3V3" H 800 940 50 0000 C CNN 425F 2 "" H 800 800 50 0000 C CNN 426F 3 "" H 800 800 50 0000 C CNN 427 1 800 800 428 1 0 0 -1 429$EndComp 430$Comp 431L GND #PWR017 432U 1 1 5764A560 433P 800 1700 434F 0 "#PWR017" H 800 1450 50 0001 C CNN 435F 1 "GND" H 800 1550 50 0000 C CNN 436F 2 "" H 800 1700 50 0000 C CNN 437F 3 "" H 800 1700 50 0000 C CNN 438 1 800 1700 439 1 0 0 -1 440$EndComp 441$Comp 442L PWR_FLAG #FLG018 443U 1 1 5764A594 444P 800 1500 445F 0 "#FLG018" H 800 1595 50 0001 C CNN 446F 1 "PWR_FLAG" H 800 1680 50 0000 C CNN 447F 2 "" H 800 1500 50 0000 C CNN 448F 3 "" H 800 1500 50 0000 C CNN 449 1 800 1500 450 1 0 0 -1 451$EndComp 452$Comp 453L PWR_FLAG #FLG019 454U 1 1 5764A5D6 455P 800 1000 456F 0 "#FLG019" H 800 1095 50 0001 C CNN 457F 1 "PWR_FLAG" H 800 1180 50 0000 C CNN 458F 2 "" H 800 1000 50 0000 C CNN 459F 3 "" H 800 1000 50 0000 C CNN 460 1 800 1000 461 -1 0 0 1 462$EndComp 463Text Label 1300 2900 0 60 ~ 0 464SERIAL_RX 465Text Label 1300 3000 0 60 ~ 0 466SERIAL_TX 467$Comp 468L CONN_01X06 P1 469U 1 1 5765C52E 470P 900 4250 471F 0 "P1" H 900 4600 50 0000 C CNN 472F 1 "CONN_01X06" V 1000 4250 50 0000 C CNN 473F 2 "walt_footprints:Pin_Header_Straight_1x06" H 900 4250 50 0001 C CNN 474F 3 "" H 900 4250 50 0000 C CNN 475 1 900 4250 476 -1 0 0 1 477$EndComp 478Text Label 1200 4400 0 60 ~ 0 479SERIAL_TX 480Text Label 1200 4300 0 60 ~ 0 481SERIAL_RX 482$Comp 483L GND #PWR020 484U 1 1 5765C7B4 485P 1300 3850 486F 0 "#PWR020" H 1300 3600 50 0001 C CNN 487F 1 "GND" H 1300 3700 50 0000 C CNN 488F 2 "" H 1300 3850 50 0000 C CNN 489F 3 "" H 1300 3850 50 0000 C CNN 490 1 1300 3850 491 -1 0 0 1 492$EndComp 493NoConn ~ 1100 4200 494Text Label 1300 2700 0 60 ~ 0 495SERIAL_RTS 496Text Label 1300 3100 0 60 ~ 0 497SERIAL_CTS 498Text Label 1200 4100 0 60 ~ 0 499SERIAL_RTS 500Text Label 1200 4500 0 60 ~ 0 501SERIAL_CTS 502Text Label 3400 2100 0 60 ~ 0 503VUSB_5V 504Text Label 1300 5100 0 60 ~ 0 505VUSB_5V 506$Comp 507L GND #PWR021 508U 1 1 5765DB92 509P 1700 5300 510F 0 "#PWR021" H 1700 5050 50 0001 C CNN 511F 1 "GND" H 1700 5150 50 0000 C CNN 512F 2 "" H 1700 5300 50 0000 C CNN 513F 3 "" H 1700 5300 50 0000 C CNN 514 1 1700 5300 515 0 -1 -1 0 516$EndComp 517Text Label 1200 5400 0 60 ~ 0 518GPIO_A5 519Text Label 1200 5500 0 60 ~ 0 520GPIO_A4 521Text Label 1200 5600 0 60 ~ 0 522GPIO_A3 523Text Label 3700 2800 0 60 ~ 0 524GPIO_A5 525Text Label 3700 2900 0 60 ~ 0 526GPIO_A4 527Text Label 3700 3000 0 60 ~ 0 528GPIO_A3 529NoConn ~ 1900 2600 530NoConn ~ 3400 2600 531NoConn ~ 2850 5600 532Wire Wire Line 533 1650 2100 1900 2100 534Wire Wire Line 535 3400 2400 4350 2400 536Wire Wire Line 537 4350 2500 3400 2500 538Wire Wire Line 539 4400 2700 3400 2700 540Wire Wire Line 541 4400 3000 3400 3000 542Wire Wire Line 543 4400 3100 3400 3100 544Wire Wire Line 545 4400 3200 3400 3200 546Wire Wire Line 547 4400 3900 4400 3750 548Wire Wire Line 549 3400 1200 3200 1200 550Wire Wire Line 551 3200 800 3400 800 552Wire Wire Line 553 1600 800 2300 800 554Wire Wire Line 555 1600 1200 2300 1200 556Wire Wire Line 557 2750 5100 2750 5400 558Wire Wire Line 559 2450 5400 2850 5400 560Wire Wire Line 561 2850 5300 2750 5300 562Connection ~ 2750 5300 563Wire Wire Line 564 2750 5800 2750 6500 565Wire Wire Line 566 2450 5800 2850 5800 567Wire Wire Line 568 2850 5900 2750 5900 569Connection ~ 2750 5900 570Wire Wire Line 571 2750 6000 2850 6000 572Connection ~ 2750 6000 573Wire Wire Line 574 2850 6100 2750 6100 575Connection ~ 2750 6100 576Wire Wire Line 577 2750 6300 2850 6300 578Connection ~ 2750 6300 579Wire Wire Line 580 4950 5600 4250 5600 581Wire Wire Line 582 4950 5500 4250 5500 583Wire Wire Line 584 6000 2400 6000 2600 585Wire Wire Line 586 5600 2600 5600 2800 587Wire Wire Line 588 5600 2800 5800 2800 589Wire Wire Line 590 6200 3300 6000 3300 591Wire Wire Line 592 6000 3300 6000 3200 593Wire Wire Line 594 5600 4300 5600 4100 595Wire Wire Line 596 5600 3000 5600 3800 597Wire Wire Line 598 5600 3000 5800 3000 599Wire Wire Line 600 6000 3600 5600 3600 601Connection ~ 5600 3600 602Wire Wire Line 603 6300 3600 6700 3600 604Wire Wire Line 605 6700 3600 6700 2900 606Wire Wire Line 607 6400 2900 7700 2900 608Wire Wire Line 609 9200 2600 9200 2400 610Wire Wire Line 611 9500 1500 9200 1500 612Wire Wire Line 613 9200 1500 9200 2100 614Wire Wire Line 615 8600 1900 9200 1900 616Connection ~ 9200 1900 617Wire Wire Line 618 8700 1300 8900 1300 619Wire Wire Line 620 8800 1300 8800 1200 621Connection ~ 8800 1300 622Wire Wire Line 623 9300 1300 9300 1200 624Connection ~ 9300 1300 625Wire Wire Line 626 7800 1300 8400 1300 627Wire Wire Line 628 8800 900 8800 800 629Wire Wire Line 630 9300 800 9300 900 631Connection ~ 6700 2900 632Wire Wire Line 633 800 800 800 1000 634Wire Wire Line 635 800 1500 800 1700 636Wire Wire Line 637 1650 2000 1650 2100 638Wire Wire Line 639 1300 2900 1900 2900 640Wire Wire Line 641 1900 3000 1300 3000 642Wire Wire Line 643 1700 4400 1100 4400 644Wire Wire Line 645 1700 4300 1100 4300 646Wire Wire Line 647 1300 4000 1100 4000 648Wire Wire Line 649 1300 2700 1900 2700 650Wire Wire Line 651 1900 3100 1300 3100 652Wire Wire Line 653 1700 4100 1100 4100 654Wire Wire Line 655 1300 4000 1300 3850 656Wire Wire Line 657 1700 4500 1100 4500 658Wire Wire Line 659 1700 5100 1100 5100 660Wire Wire Line 661 1700 5400 1100 5400 662Wire Wire Line 663 1700 5500 1100 5500 664Wire Wire Line 665 1700 5600 1100 5600 666Wire Wire Line 667 3400 2300 4200 2300 668Wire Wire Line 669 4200 2300 4200 2100 670Wire Wire Line 671 3400 2200 3950 2200 672Wire Wire Line 673 3950 2200 3950 2100 674Wire Wire Line 675 3800 2100 3400 2100 676Wire Wire Line 677 1700 5300 1100 5300 678Wire Wire Line 679 4400 2900 3400 2900 680Wire Wire Line 681 4400 2800 3400 2800 682Wire Wire Line 683 3400 3300 4400 3300 684Wire Wire Line 685 4400 3300 4400 3450 686Wire Wire Line 687 9200 1300 9500 1300 688$Comp 689L GND #PWR022 690U 1 1 5766B49C 691P 9400 1400 692F 0 "#PWR022" H 9400 1150 50 0001 C CNN 693F 1 "GND" H 9400 1250 50 0000 C CNN 694F 2 "" H 9400 1400 50 0000 C CNN 695F 3 "" H 9400 1400 50 0000 C CNN 696 1 9400 1400 697 0 1 1 0 698$EndComp 699Wire Wire Line 700 9400 1400 9500 1400 701Wire Wire Line 702 2800 800 2600 800 703Wire Wire Line 704 2600 1200 2800 1200 705$Comp 706L C C2 707U 1 1 5766D3A4 708P 2450 5600 709F 0 "C2" H 2475 5700 50 0000 L CNN 710F 1 "0.1uF" H 2475 5500 50 0000 L CNN 711F 2 "Capacitors_SMD:C_0805" H 2488 5450 50 0001 C CNN 712F 3 "" H 2450 5600 50 0000 C CNN 713 1 2450 5600 714 1 0 0 -1 715$EndComp 716Wire Wire Line 717 2450 5750 2450 5800 718Connection ~ 2750 5800 719Wire Wire Line 720 2450 5400 2450 5450 721Connection ~ 2750 5400 722$Comp 723L +3V3 #PWR023 724U 1 1 5766F66D 725P 1550 5200 726F 0 "#PWR023" H 1550 5050 50 0001 C CNN 727F 1 "+3V3" H 1550 5340 50 0000 C CNN 728F 2 "" H 1550 5200 50 0000 C CNN 729F 3 "" H 1550 5200 50 0000 C CNN 730 1 1550 5200 731 0 1 1 0 732$EndComp 733$Comp 734L CONN_01X06 P2 735U 1 1 57681A8E 736P 900 5350 737F 0 "P2" H 900 5700 50 0000 C CNN 738F 1 "CONN_01X06" V 1000 5350 50 0000 C CNN 739F 2 "walt_footprints:Pin_Header_Straight_1x06" H 900 5350 50 0001 C CNN 740F 3 "" H 900 5350 50 0000 C CNN 741 1 900 5350 742 -1 0 0 1 743$EndComp 744Wire Wire Line 745 1550 5200 1100 5200 746Wire Wire Line 747 1300 3300 1900 3300 748Wire Wire Line 749 1300 3400 1900 3400 750Text Label 1300 3300 0 60 ~ 0 751DEBUG_LED1 752Text Label 1300 3400 0 60 ~ 0 753DEBUG_LED2 754NoConn ~ 1900 3200 755NoConn ~ 1900 2500 756NoConn ~ 1900 2400 757NoConn ~ 1900 2300 758NoConn ~ 1900 2200 759NoConn ~ 1900 2800 760NoConn ~ 3400 3400 761NoConn ~ 4250 5400 762$Comp 763L R R8 764U 1 1 58B4C350 765P 9400 2250 766F 0 "R8" V 9480 2250 50 0000 C CNN 767F 1 "100" V 9400 2250 50 0000 C CNN 768F 2 "walt_footprints:R_0603_pad07mm_long" V 9330 2250 50 0001 C CNN 769F 3 "" H 9400 2250 50 0000 C CNN 770 1 9400 2250 771 1 0 0 -1 772$EndComp 773Wire Wire Line 774 9500 1600 9400 1600 775Wire Wire Line 776 9400 1600 9400 2100 777Wire Wire Line 778 9400 2400 9400 2500 779Wire Wire Line 780 9400 2500 9200 2500 781Connection ~ 9200 2500 782$EndSCHEMATC 783