MoleNet V7.1
About the MoleNet V7.1 PCB
MoleNet V7.1 is an open source ESP32 PCB design by ComNets-Bremen, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 106 × 66.8 mm, with 70 components from 44 distinct parts.
Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the 74AHC1G00, TLV76133DCY, PC817, Lora Module and 74LVC2G241. By type, the board carries 19 resistors, 17 connectors, 15 capacitors, 8 diodes, 7 ICs and 2 transistors.
It belongs with the rf & radio, iot & wireless and sensors designs in this gallery, and the repository also holds 8 earlier revisions of it.
From the project
MoleNet: A Wireless Underground Sensor Network platform
This folder contain Kicad files of Molenet V7.1 Board.
Main components on the MoleNet V7.1
MoleNet V7.1 bill of materials (BOM)
70 components, 44 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ESP32-S3-WROOM-1 | ESP32-S3-WROOM-1 | U1 |
| 1 | 74AHC1G00 | SC-74A-5_1.55x2.9mm_P0.95mm | U2 |
| 1 | TLV76133DCY | SOT-223-3_TabPin2 | U3 |
| 1 | PC817 | DIP-4_W7.62mm | U4 |
| 1 | Lora Module | Ai-Thinker-Ra-01-LoRa | U5 |
| 1 | 74LVC2G241 | SOP65P400X130-8N | U6 |
| 1 | BME280 | Bosch_LGA-8_2.5x2.5mm_P0.65mm_ClockwisePinNumbering | U7 |
| 1 | BS170 | TO-92_Inline | Q1 |
| 1 | IRLML5203 | SOT-23 | Q2 |
| 1 | Micro SD connector | PinHeader_2x07_P2.54mm_Vertical | J1 |
| 1 | BME280 Connector | PinHeader_2x04_P2.54mm_Vertical | J2 |
| 1 | Power Out | PinHeader_1x04_P2.54mm_Vertical | J3 |
| 1 | Led Connector | PinHeader_2x03_P2.54mm_Vertical | J4 |
| 1 | Lora Connector | PinHeader_2x08_P2.54mm_Vertical | J5 |
| 1 | USB_C_RECEPTACLE_USB2.0 USB_C_Receptacle_USB2.0 | USB_C_Receptacle_G-Switch_GT-USB-7010ASV | J6 |
| 1 | 5V-16V Input | TerminalBlock_Phoenix_PT-1,5-2-3.5-H_1x02_P3.50mm_Horizontal | J7 |
| 1 | ~ | PinHeader_2x04_P2.54mm_Vertical | J8 |
| 1 | Unused Pin | PinHeader_2x08_P2.54mm_Vertical | J9 |
| 1 | SDI-12 | TerminalBlock_Phoenix_PT-1,5-3-3.5-H_1x03_P3.50mm_Horizontal | J10 |
| 1 | RA_01_DIO | PinHeader_1x06_P2.54mm_Vertical | J11 |
Show 24 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | CONN_01X02 Conn_01x02 | PinHeader_1x02_P2.54mm_Vertical | J12, J16, J17 |
| 1 | Micro SD Card | microSD_HC_Molex_104031-0811 | J13 |
| 1 | Conn_Coaxial | SMA_Amphenol_901-143_Horizontal | J14 |
| 1 | Qwiic | SPARKFUN_PRT-14417 | J15 |
| 1 | RESET | SW_PUSH_6mm_H4.3mm | SW1 |
| 1 | BOOT | SW_PUSH_6mm_H4.3mm | SW2 |
| 2 | 1N5819 | D_DO-41_SOD81_P10.16mm_Horizontal | D1, D3 |
| 3 | LESD5D5.0CT1G | LESD5D50CT1G | D2, D4, D5 |
| 3 | LED | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D6, D7, D8 |
| 2 | 22UF 22uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C14 |
| 2 | 100NF 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C15 |
| 3 | 1UF 1uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C6, C8 |
| 1 | 2.2UF 2.2uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4 |
| 4 | 0.1UF 0.1uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5, C7, C9, C10 |
| 1 | 10UF 10uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C13 |
| 1 | 22UF 22uF | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C16 |
| 1 | 100NF 100nF | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C17 |
| 4 | 10K 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R6 |
| 2 | 5.1K 5.1k | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R4, R5 |
| 2 | 4.7K | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R7, R17 |
| 4 | 220 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R8, R10, R11, R12 |
| 1 | 1k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9 |
| 4 | 10K | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R13, R14, R15, R16 |
| 2 | 100K 100k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R18, R19 |
MoleNet V7.1 design files
The KiCad project lives in the ComNets-Bremen/MoleNet repository on GitHub; these links point at the commit this page was built from.
MoleNet V7.1: common questions
What microcontroller does the MoleNet V7.1 use?
The MoleNet V7.1 is built around the ESP32-S3-WROOM-1, from the ESP32 family.
How big is the MoleNet V7.1 PCB?
The MoleNet V7.1 measures 106 × 66.8 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the MoleNet V7.1?
70 components, from 44 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the MoleNet V7.1 design files?
From the ComNets-Bremen/MoleNet repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the MoleNet V7.1 design in my own project?
Yes, under the terms of its GPL-3.0 license, which ComNets-Bremen chose for the repository.
Can I test firmware for the MoleNet V7.1 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.
More boards in MoleNet
Earlier revisions in the repo: Molenet_V7.0_03_12_25, Molenet_V6.3_15_05_25, Molenet_V6.2_20_03_25, Molenet_V6.1_26_09_24, MoleNet_v5.01, MoleNet_V6_18_1_2024, MoleNet_V5.2.2, MoleNet_V5.2
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