2 layers139 × 45 mm
Newbatt
jlab-sensing/ENTS-node-hardware
Schematics and design for soil MFC voltage and current sensing
33 parts
2 layers139 × 45 mm
Soil Power Sensor
jlab-sensing/ENTS-node-hardwareSchematics and design for soil MFC voltage and current sensing
- Size
- 139 × 45 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 72
- Nets
- 79
- Pads
- 339
- Tracks, vias
- 698, 96
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 4 Nov 2022
- Updated
- 28 Aug 2026
Overview
Soil Power Sensor is an open-source printed circuit board by jlab-sensing, from the jlab-sensing/ENTS-node-hardware repository on GitHub. It is a 2-layer board of 139 × 45 mm with 72 parts on 79 nets, routed with 698 tracks and 96 vias.
It is built around the ESP32-C3-WROOM-02-H4, SN74LVC1G240DBVR-TP and ADS1219IPW, with the INA296A4ID, THS4532IPW and FM24CL16B-G among its other parts. Its parts include 19 resistors, 14 capacitors, 11 ICs, 8 connectors and 3 transistors. It belongs with the sensors and measurement boards and the ESP32 and RISC-V boards of this library.
Main components
12
ESP32-C3-WROOM-02-H4
SMD,20x18mm-105dBm -40℃~+105℃ 2.4GHz 20.5dBm 345mA 3V~3.6V 82mA Bluetooth5.0 ESP32-C3 On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD,20x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
SN74LVC1G240DBVR-TP
SOT-23-5-40℃~+125℃ 1 1.1ns@3.3V,50pF 1.65V~5.5V 10uA 32mA 32mA 74LVC Power-off isolation、Output enable Tri-State Unidirectional SOT-23-5 Buffers, Drivers, Receivers, Transceivers ROHSTECH PUBLICBuffers, Drivers, Receivers, Transceivers
ADS1219IPW
TSSOP-16-40℃~+125℃ 1.024MHz 15LSB 1kHz 2 2.3V~5.5V 24 315uA Built-in Built-in I2C Multiplexers、Power-on reset、Integrated modulator、Built-in digital filter Sigma-Delta Support Yes TSSOP-16 Analog to Digital Converters (ADC) ROHSTexas InstrumentsAnalog To Digital Converters (ADC)
INA296A4ID
SOIC-8-40℃~+125℃ -5V~110V 0.1uV/℃ 1.1MHz 100V/V 10uV 166dB 2.5mA 2.7V~20V 35nA 8V/us Bidirectional detection、Zero drift / auto-zero、Programmable output reference level SOIC-8 Current Sense Amplifiers ROHSTexas InstrumentsCurrent Sense AmplifiersTHS4532IPW
TSSOP-16-40℃~+125℃ 0.03nA/℃ 108dB 10nV/√Hz@1kHz 15mA 2 2.7V~5.4V 200V/us 200nA 230uA 25ns 27MHz 3uV/℃ 5.5V 5nA 80uV 90dB Differential Enable/shutdown function、Single-ended to differential conversion、Adjustable output common-mode voltage、Differential to single-ended conversion Rail-to-rail output TSSOP-16 Differential Amplifiers ROHSTexas InstrumentsDifferential AmplifiersFM24CL16B-G
SOIC-8-40℃~+85℃ 100,000,000,000,000 Cycles 151 Years 16Kbit 1MHz 2.7V~3.65V 300uA 6uA I2C SOIC-8 FRAM ROHSInfineon TechnologiesFRAMMAX9944ASA+T
SO-8-19V~-3V、3V~19V -40℃~+125℃ 0.35V/us 10nA 125dB 17.6nV/√Hz@1kHz 2 2.4MHz 20mA 20uV 400nV/℃ 4nA 550uA 6V~38V Built-in compensation Rail-to-rail output SO-8 Precision Op Amps ROHSMaxim Integrated (Analog Devices)Precision Op AmpsREF2033QDDCRQ1
SOT-23-5-40℃~+125℃ 20mA 3.32V~5.5V 3.3V 360uA 8ppm/℃ Enable/disable、Built-in output buffer、Multi-channel reference output Fixed Series ±0.05% SOT-23-5 Voltage Reference ROHSTexas InstrumentsVoltage ReferenceTPS60400DBV
SOT-23-5-40℃~+85℃ 1.6V~5.5V 15Ω 270uA 60mA 90% Inverted Support SOT-23-5 Charge Pumps ROHSTexas InstrumentsCharge Pumps
CC0603KPX7R7BB104
0603100nF 16V X7R ±10% 0603 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSYAGEOMultilayer Ceramic Capacitors MLCC - SMD/SMT
RC0603FR-0710KL
UncategorisedUnknown maker
RT0603BRD07100KL
0603-55℃~+155℃ 100kΩ 100mW 75V Thin Film Resistor ±0.1% ±25ppm/℃ 0603 Chip Resistor - Surface Mount ROHSYAGEOChip Resistor - Surface Mount
README
extra/i2c_breakout/README.mdSDI12 Breakout Board
This board add additional SDI-12 headers for connecting sensors. It also adds 3.5mm audio jacks that are commonly seen on SDI-12 sensors from METER.
| Top View | Bottom View |
|---|---|
 |  |
Parts
72| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C1, C6, C7, C8, C9, C10, C12, C13, C15 |
| 7 | 10k | Resistor_SMD:R_0603_1608Metric | R3, R5, R12, R14, R15, R19, R20 |
| 4 | 100k | Resistor_SMD:R_0603_1608Metric | R1, R2, R6, R7 |
| 4 | 1uF | Capacitor_SMD:C_0603_1608Metric | C4, C5, C11, C16 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_ISO7380_Pad_TopBottom | H1, H2, H3, H4 |
| 3 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1, JP2, JP3 |
| 2 | 1M | Resistor_SMD:R_0603_1608Metric | R16, R17 |
| 2 | 499k | Resistor_SMD:R_0603_1608Metric | R8, R9 |
| 2 | 510 | Resistor_SMD:R_0603_1608Metric | R10, R11 |
| 2 | L8050QLT1G | Package_TO_SOT_SMD:SOT-23 | Q2, Q3 |
| 2 | MB85RC1MT | Soil Power Sensor:SOP127P505X155-8N | U11, U12 |
| 1 | -3V3 | TestPoint:TestPoint_Pad_D1.5mm | TP4 |
| 1 | 10k | Resistor_SMD:R_Array_Convex_4x0603 | RN1 |
| 1 | 10uF | Capacitor_SMD:C_0603_1608Metric | C14 |
| 1 | 330m | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | 47k | Resistor_SMD:R_0603_1608Metric | R13 |
| 1 | ADS1219 | Soil Power Sensor:TSSOP65P640X120-16 | U6 |
| 1 | ARM10_DEBUG | Soil Power Sensor:ARM10_DEBUG | D2 |
| 1 | BOOT | Button_Switch_SMD:SW_Push_1P1T_NO_CK_KSC7xxJ | SW1 |
| 1 | BSS123 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | BZX84Cxx | Package_TO_SOT_SMD:SOT-23 | D1 |
| 1 | Conn_01x03 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_PT-1,5-3-5.0-H_1x03_P5.00mm_Horizontal | J4 |
| 1 | Conn_01x04_Socket | Connector_JST:JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | J7 |
| 1 | Conn_01x10 | Connector_PinHeader_2.54mm:PinHeader_1x10_P2.54mm_Horizontal | J8 |
| 1 | Debug | Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical | J3 |
| 1 | EN | Button_Switch_SMD:SW_Push_1P1T_NO_CK_KSC7xxJ | SW2 |
| 1 | ESP32-C3-WROOM-02-N4 | Soil Power Sensor:MODULE_ESP32-C3-WROOM-02-N4 | U8 |
| 1 | ESP_EN | Jumper:SolderJumper-3_P1.3mm_Open_Pad1.0x1.5mm | JP5 |
| 1 | INA296A | Package_TO_SOT_SMD:SOT-23-8 | U2 |
| 1 | MAX9944 | Soil Power Sensor:SOIC127P600X155-8N | U1 |
| 1 | Micro_SD_Card | Connector_Card:microSD_HC_Molex_104031-0811 | J5 |
| 1 | REF+1V65 | TestPoint:TestPoint_Pad_D1.5mm | TP1 |
| 1 | REF+3V3 | TestPoint:TestPoint_Pad_D1.5mm | TP2 |
| 1 | REF2033 | Package_TO_SOT_SMD:SOT-23-5 | U3 |
| 1 | RFShield_OnePiece | RF_Shielding:Wuerth_36103305_30x30mm | J2 |
| 1 | Rsense | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J9 |
| 1 | SN74LVC1G240 | Package_TO_SOT_SMD:SOT-23-5 | U7 |
| 1 | SW_SPDT | Soil Power Sensor:JS102011SCQN | SW3 |
| 1 | Screw_Terminal_01x05 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_PT-1,5-5-5.0-H_1x05_P5.00mm_Horizontal | J1 |
| 1 | THS4532 | Soil Power Sensor:SOP65P640X120-16N | U4 |
| 1 | TPS60400DBV | Package_TO_SOT_SMD:SOT-23-5 | U5 |
| 1 | Wio-E5 mini | Soil Power Sensor:WIO-E5_MINI | U10 |
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Questions
How big is the Soil Power Sensor PCB?
It measures 139 × 45 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Soil Power Sensor use?
72 parts, built around the ESP32-C3-WROOM-02-H4, SN74LVC1G240DBVR-TP, ADS1219IPW and INA296A4ID. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Soil Power Sensor KiCad files?
From the jlab-sensing/ENTS-node-hardware repository on GitHub, at the commit this page was made from: the board is hardware/Soil Power Sensor.kicad_pcb and its schematic extra/analog_multiplexer/Analog Multiplexer.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Soil Power Sensor design in my own project?
Its repository states no licence, so its author keeps all rights: ask jlab-sensing before reusing the design.