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EliaKr
[WIP] This repo includes electronics (schematics/PCBs), 3D-printable mechanical parts, and software for a custom ESP32-CAM weather station. Logs data and images to SD card + online services and also has support for APRS/CWOP.
| Reference | Value | Description |
|---|---|---|
| IC1 | BME688 | Gas sensor measuring relative humidity, barometric pressure, ambient temperature and gas (VOC) |
| IC2 | SGP41-D-R4 | Air Quality Sensors VOC and NOx (MOX) Gas Pollutant Sensor |
| IC3 | VEML7700-TT | 16Bit Ambient Light Sensor I2C 6.8x2.3mm |
| IC4 | BQ24093DGQR | 1A, Single-Input, Single-Cell Li-Ion Battery Charger with Operation Over JEITA and 100k NTC |
| IC5 | BQ29707DSET | Li-Ion/Li Polymer Advanced Single-Cell Battery Protector IC Family |
| IC6 |
| Microchip MCP3426A0T-E/SN, 16 bit Serial ADC, Differential Input, 8-Pin SOIC |
| IC7 | TPS63070RNMR | Wide Input Voltage (2V-16V) Buck-Boost Converter |
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| Q2,Q3 | CSD16406Q3 | 25V, N ch NexFET MOSFET, single SON3x3, 7.4mOhm |
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| U1 | ESP32-CAM | ESP32 ESP32 Transceiver; 802.11 a/b/g/n (Wi-Fi, WiFi, WLAN), Bluetooth® Smart 4.x Low Energy (BLE) Evaluation Board |
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| U2 | TPS631000DRLR | Switching Voltage Regulators 1.5-A output current, high power density buck-boost converter |
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| U3 | GDT25-07-S1-RP | Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 75V |
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| C1 | 0.1uF | Unpolarized capacitor |
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| C2,C3,C18,C19 | 1uF | Unpolarized capacitor |
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| C4,C6-C8 | 22uF | GRM187R61A226ME15,GRM21BC81C226ME44L |
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| C5 | 47uF | GRM219R60J476ME44 |
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| C9-C12,C14,C16 | 10uF | GRM21BC71E106ME11L,TMK107BBJ106MA-T |
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| C13,C15,C17,C20,C21 | 100nF |
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| D1,D2,D6-D11 | SD05C-7 | ESD Suppressors / TVS Diodes Surge Protection PP SOD323 T&R 3K |
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| D3,D14 | LED_GREEN | Light emitting diode |
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| D4 | LED_RED | Light emitting diode |
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| D5 | SMBJ20CA-TR | 32.4V Clamp 19.4A Ipp Tvs Diode Surface Mount SMB |
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| F1 | SF-1206FP400-2 | Surface Mount Fuses 4A Fast Acting 1206 Singlfuse |
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| F2 | MF-USHT125KX_12-2 | Polymeric PTC Resettable Fuse 12V 1.25 A Ih Surface Mount 1210 (3225 Metric), Concave |
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| H1 | 12BHC186P2-GR | Cylindrical Battery Contacts, Clips, Holders & Springs 18650 Battery Holder PC Mount - Black |
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| J1-J4 | B4B-PH-SM4-TB_LF__SN_ | PH SMT top entry shrouded header 4 way JST PH Series, 2mm Pitch 4 Way 1 Row Straight PCB Header, Solder Termination, 2A |
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| J5 | Conn_01x04_Socket | Generic connector, single row, 01x04, script generated |
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| J6 | XT30UPB-M |
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| J7-J10 | Conn_01x02_Pin | Generic connector, single row, 01x02, script generated |
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| L1 | DFE252012P-1R0M=P2 | Toko DFE252012P Series Shielded Wire-wound SMD Inductor with a Powered Iron Core, 1 uH Wire-Wound 4.8A Idc |
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| L2 | XFL4020-152MEC | COILCRAFT - XFL4020-152MEC - Power Inductor (SMD), 1.5 H, 9.1 A, Shielded, 4.1 A, XFL4020 |
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| R3,R4 | 20k | Resistor |
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| R5 | 100k | Resistor |
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| R6-R8,R21,R25,R26 | 10k | Resistor |
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| R9-R14,R18,R19,R22,R27 | 1k | Resistor |
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| R16 | 330 | Resistor |
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| R17 | 2.2k | Resistor |
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| R20 | 549 | Resistor |
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| R23 | 91k | Resistor |
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| R24 | 511k | Resistor |
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| R28 | 680k | Resistor |
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| R29 | 130k | Resistor |
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| R30 | 10 | Resistor |
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| R31 | 4.7 | Resistor |
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| S1 | TS18-5-25-SL-260-SMT-TR | TS18-5-25-SL-260-SMT-TR - 5 x 5 mm, 2.5 mm Actuator Height, 260 gf, Silver, Surface Mount, TR, SPST, Tactile Switch |
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