Enviro node
About the Enviro node PCB
Enviro node is an open source ESP32 PCB design by DPIclimate, published on GitHub under the MIT license. It is a 2-layer board measuring 106.7 × 156.6 mm, with 133 components from 72 distinct parts.
Its main chip is the ESP32-WROOM-32E_(16MB), from the ESP32 family. Other key parts include the CP2102N-Axx-xQFN28, TCA9534, INA219BxD, LT3652IMSE and TPS22967DSGR. By type, the board carries 41 resistors, 32 capacitors, 13 ICs, 12 connectors, 11 diodes and 5 transistors.
It belongs with the iot & wireless, power & battery and sensors designs in this gallery.
From the project
Agriculture node for SDI-12 (and other) sensors.
Enviro-node is a environmental monitoring node. Users can connect a number of sensors to a node. Data captured from these sensors is then sent to a database over MQTT.
The hardware was developed using KiCad. Source files can be found here. While sleeping the Enviro-node will consume ~70 µA.
The device incorporates a ESP32 microcontroller to handle bluetooth functions and peripherals. The ESP32 has a very low sleep current of ~16 µA making it perfect for low-powered applications.
Main components on the Enviro node
Enviro node bill of materials (BOM)
133 components, 72 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CP2102N-Axx-xQFN28 | QFN-28-1EP_5x5mm_P0.5mm_EP3.35x3.35mm | U1 |
| 1 | ESP32-WROOM-32E_(16MB) | XCVR_ESP32-WROOM-32E_(16MB) | U2 |
| 1 | TCA9534 | TSSOP-16_4.4x5mm_P0.65mm | U3 |
| 2 | INA219BxD | SOIC-8_3.9x4.9mm_P1.27mm | U4, U8 |
| 1 | LT3652IMSE | MSOP-12-1EP_3x4mm_P0.65mm_EP1.65x2.85mm | U5 |
| 2 | TPS22967DSGR | SON50P200X200X80-9N | U6, U11 |
| 1 | MCP73832-2-OT | SOT-23-5 | U7 |
| 1 | MIC2288YD5-TR | SOT95P280X100-5N | U9 |
| 1 | XC6215B332MR-G | XC6215B332MR-G | U10 |
| 1 | SARA-R500S-01B | XCVR_SARA-R410M-02B | U12 |
| 1 | TXB0104PW | TSSOP-14_4.4x5mm_P0.65mm | U13 |
| 1 | MMDT3904 | SOT-363_SC-70-6 | Q1 |
| 3 | BC847 | SOT-23 | Q2, Q4, Q5 |
| 1 | BSS214NW | SOT-323_SC-70 | Q3 |
| 1 | 32.768KHz | XTAL320X150X90 | Y1 |
| 1 | USB4145-03-0230-C | GCT_USB4145-03-0230-C_REVA | J1 |
| 1 | JTAG | PinHeader_1x04_P2.54mm_Vertical | J2 |
| 1 | JTAG | CNC_3221-10-0100-00 | J3 |
| 3 | 2604-3102 | 2604-3102 | J4, J7, J10 |
| 1 | ST1W008S4AR1500 | JAE_ST1W008S4AR1500 | J5 |
Show 52 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 2604-3105 | 2604-3105 | J6 |
| 1 | SOLAR_CRNT_JMPR | PinHeader_1x02_P2.54mm_Vertical | J8 |
| 1 | BAT_CRNT_JMPR | PinHeader_1x02_P2.54mm_Vertical | J9 |
| 1 | CONUFL001-SMD-T | LINX_CONUFL001-SMD-T | J11 |
| 1 | SIM8060-6-0-14-00-A | GCT_SIM8060-6-0-14-00-A | J12 |
| 1 | 1049P | 1049P | B1 |
| 4 | PESD0402-140 | PESD0402-140 | CR1, CR2, CR3, CR4 |
| 2 | 0685P2000-01 | 0685P2000-01 | F1, F2 |
| 1 | UART TX | SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP1 |
| 1 | PS1240P02BT | XDCR_PS1240P02BT | LS1 |
| 2 | SSM3J340R_LF | SSM3J340R_LF | MOSFET1, MOSFET2 |
| 1 | ESD_RST_IN | R_0805_2012Metric | RV1 |
| 1 | BOOT | 1977223-6 | SW1 |
| 1 | RESET | 1977223-6 | SW2 |
| 1 | CAT_M1_RST | 1977223-6 | SW3 |
| 1 | SP0503BAHT | SOT-143 | D1 |
| 2 | LED(Orange) | LED_0805_2012Metric | D2, D11 |
| 3 | LED(Red) | LED_0805_2012Metric | D3, D5, D10 |
| 2 | LED(Green) | LED_0805_2012Metric | D4, D8 |
| 3 | SS34LW_RVG | SODFL3718X102N | D6, D7, D9 |
| 1 | FBMH2012HM221-TV | BEADC2012X105N | FB1 |
| 1 | SRP4020T-5R6M | IND_SRP4020TA-5R6M | L1 |
| 1 | LQH43CN100K03L | IND_LQH43CN100K03L | L2 |
| 8 | 0.1uF | C_0805_2012Metric | C3, C6, C7, C21, C24, C28, C33, C34 |
| 3 | 4.7uF | C_0805_2012Metric | C4, C14, C16 |
| 5 | 1uF | C_0805_2012Metric | C5, C12, C13, C19, C22 |
| 2 | 12pF | C_0805_2012Metric | C8, C9 |
| 1 | 22uF | C_0805_2012Metric | C10 |
| 3 | 10uF | C_0805_2012Metric | C11, C15, C20 |
| 2 | 0.1uF | CP_EIA-2012-12_Kemet-R | C17, C23 |
| 1 | 2.2uF | C_0805_2012Metric | C18 |
| 1 | 10nF | C_0805_2012Metric | C25 |
| 1 | 68pF | C_0805_2012Metric | C26 |
| 4 | 47pF | C_0805_2012Metric | C27, C30, C31, C32 |
| 1 | 15pF | C_0805_2012Metric | C29 |
| 1 | 22.1K | R_0805_2012Metric | R1 |
| 1 | 47.5K | R_0805_2012Metric | R2 |
| 2 | 5.1K | R_0805_2012Metric | R3, R7 |
| 6 | 1K | R_0805_2012Metric | R4, R14, R19, R31, R35, R40 |
| 10 | 10K | R_0805_2012Metric | R5, R6, R8, R11, R13, R15, R18, R23 +2 |
| 3 | 0 | R_0805_2012Metric | R9, R10, R41 |
| 1 | 10M | R_0805_2012Metric | R12 |
| 3 | 4.7K | R_0805_2012Metric | R16, R17, R34 |
| 3 | 2K | R_0805_2012Metric | R20, R24, R25 |
| 2 | 0.1 | R_2512_6332Metric | R21, R30 |
| 1 | 21K | R_0805_2012Metric | R22 |
| 1 | 180K | R_0805_2012Metric | R26 |
| 1 | 91K | R_0805_2012Metric | R27 |
| 1 | 330K | R_0805_2012Metric | R28 |
| 1 | 3.2K | R_0805_2012Metric | R29 |
| 2 | 100K | R_0805_2012Metric | R32, R37 |
| 2 | 47K | R_0805_2012Metric | R33, R38 |
Enviro node design files
The KiCad project lives in the DPIclimate/enviro-node repository on GitHub; these links point at the commit this page was built from.
Enviro node: common questions
What microcontroller does the Enviro node use?
The Enviro node is built around the ESP32-WROOM-32E_(16MB), from the ESP32 family.
How big is the Enviro node PCB?
The Enviro node measures 106.7 × 156.6 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Enviro node?
133 components, from 72 distinct parts. The full bill of materials is listed on this page.
Where can I download the Enviro node design files?
From the DPIclimate/enviro-node repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Enviro node design in my own project?
Yes, under the terms of its MIT license, which DPIclimate chose for the repository.
Can I test firmware for the Enviro node without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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