1 1 2 2 3 3 4 4 5 5 6 6 A A B B C C D D Schematic Schematic1 Create at 2026-07-02 Update at 2026-07-04 Board Board1 Page P1 Drawn Osmosis datalogger_NEWEST_VERSION Reviewed Version Size Page 1 Total 1 V1.0 A4 EasyEDA.com 1 1 2 2 U1 KF128-5.08-2P-AA GND GND GND GND GND GND GND GND GND GND GND GND GND F1 SMD1206-050-30 D1 SS54 24V IN INPUT 1 SW_OUTPUT 2 GND 3 FEEDBACK 4 ENABLE 5 EP 6 U3 LM2596HVS-5.0 24V L1 33uH 5V 5V BUCK 5V D2 SS54 C1 470uF C12 100nF C11 100nF C13 100nF C2 100nF C3 220uF C4 100nF D3 SMBJ24A-13-F 3V3 LDO GND 1 GND 2 3V3 3 NC 4 IO2 5 IO3 6 NC 7 EN 8 NC 9 NC 10 GND 11 IO0 12 IO1 13 GND 14 NC 15 IO10 16 NC 17 IO4 18 IO5 19 IO6 20 IO7 21 IO8 22 IO9 23 NC 24 NC 25 IO18 26 IO19 27 NC 28 NC 29 RXD0 30 TXD0 31 NC 32 NC 33 NC 34 NC 35 GND 36 GND 37 GND 38 GND 39 GND 40 GND 41 GND 42 GND 43 GND 44 GND 45 GND 46 GND 47 GND 48 GND 49 GND 50 GND 51 GND 52 GND 53 U4 ESP32-C3-MINI-1-N4 3V3 3V3 3V3 3V3 3V3 R8 1k Ω R1 1k Ω R9 1k Ω LED1 KT-0603R R6 10k Ω R10 10k Ω R11 10k Ω R7 10k Ω R2 10k Ω 2 1 4 3 BOOT TS-1187A-B-A-B GND GND C7 1uF R3 10k Ω 2 1 4 3 RESET TS-1187A-B-A-B C8 100nF C9 10uF GND GND GND A1B12 VBUS A4B9 SBU2 B8 CC1 A5 DN2 B7 DP1 A6 DN1 A7 DP2 B6 SBU1 A8 CC2 B5 VBUS B4A9 GND B1A12 EH 4 EH 3 EH 2 EH 1 USBC1 TYPE-C-31-M-12 GND GND GND GND D4 SS54 GND GND 5V R4 5.1k Ω R5 5.1k Ω GND IO1 1 GND 2 IO2 3 IO2 4 VBUS 5 IO1 6 D5 USBLC6-2SC6 D- D+ 5V GND 3V3 RXTDS TXTDS GND GND GND BUCK 24 - 5V SENSORS ESP32 USB-C LDO 24 VDC INPUT IN 1 GND 2 EN 3 NC 4 OUT 5 U6 TLV75533PDBVR C5 1uF C6 1uF TP24V TP5V TP3V3 RXTDS TXTDS FL2 FL1 3V3 3V3 FL2 FL1 D- D+ C10 10nF C14 10nF 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 P1 2.54-1*8P 母环保 IO7 IO6 IO6 IO7 IO0 IO0 IO4 IO5 IO5 IO4 1 1 2 2 H2 B-2100S02P-A110 1 1 2 2 H3 B-2100S02P-A110 1 1 2 2 H1 B-2100S02P-A110 5V BUCK 5V 24V IN 24V 3V3 LDO 3V3 1 1 2 2 3 3 4 4 U2 S4B-PH-K-S(LF)(SN) 1 1 2 2 3 3 U5 S3B-PH-K-S(LF)(SN) 1 1 2 2 3 3 U7 S3B-PH-K-S(LF)(SN)