HardLabs

Soil metrics

Aryan-git-byte·Soil-metrics·kicad/kicad.kicad_pcb

Soil metrics PCB layout, top view — open source ESP32 board by Aryan-git-byte

About the Soil metrics PCB

Soil metrics is an open source ESP32 PCB design by Aryan-git-byte, published on GitHub under the MIT license. It is a 4-layer board measuring 88.3 × 112.3 mm, with 74 components from 45 distinct parts.

Its main chip is the ESP32-S3-WROOM-1U, from the ESP32 family. Other key parts include the MP2307, TP5100, LD1117S50TR_SOT223, LD1117S33TR_SOT223 and HY2120. By type, the board carries 21 capacitors, 20 resistors, 10 ICs, 6 connectors, 6 diodes and 3 transistors.

It belongs with the rf & radio, iot & wireless and power & battery designs in this gallery.

From the project

Portable AI-powered soil monitoring device with LTE connectivity, GPS, touchscreen interface, and real-time soil health analytics.

SoilMetrics is an affordable soil health monitoring system to measure key soil parameters in real time such as NPK, EC, pH, Moisture, and Temperature. which will allow small farmers to make scientific decision regarding their soil health and conditions which can help them do sustainable farming.

- MCU - ESP32-S3-WROOM1U-N16R8 - Cellular & GPS - SIM7080G - Soil Sensor - ZTS-3002-TR-\-N01 - Display** - SmartElex 3.5" TFT Resistive Touch Display 320x480

Soil metrics, from the project README
From the project README

Main components on the Soil metrics

MP2307TP5100LD1117S50TR_SOT223LD1117S33TR_SOT223HY2120ESP32-S3-WROOM-1UTXS0102DCTMAX3485SIM7080GCDRH104R-220NC

Soil metrics bill of materials (BOM)

74 components, 45 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
MP2307
U1
1
TP5100
U2
1
LD1117S50TR_SOT223
U3
1
LD1117S33TR_SOT223
U4
1
HY2120
U5
1
ESP32-S3-WROOM-1U
U6
1
TXS0102DCT
U7
1
MAX3485
U8
1
SIM7080G
U9
1
CDRH104R-220NC
U10
2
NMOS
Q1, Q2
1
NPN
Q3
1
USB_C_RECEPTACLE_USB2.0_16P
USB_C_Receptacle_USB2.0_16P
J1
1
Barrel_Jack_MountingPin
J2
1
SCREW_TERMINAL_01X04
Screw_Terminal_01x04
J4
1
CONN_02X20_ODD_EVEN
Conn_02x20_Odd_Even
J5
2
Conn_Coaxial
J6, J8
2
18650
BT1, BT2
1
SMN-305
Card1
1
THD2528-11SD-GF
THD(台华达)
Card2
Show 25 more
QtyPartRefs
1
SW_SPST
SW1
2
SW_Push
SW2, SW3
2
D
D1, D4
2
G
D2, D6
2
R
D3, D5
1
10UH
10uH
L1
1
10UF/25V
10uF/25V
C1
7
100NF
100nF
C2, C6, C10, C11, C16, C18, C21
1
3.9NF
3.9nF
C3
1
10NF
10nF
C4
4
10UF
10uF
C7, C12, C13, C17
4
22UF
22uF
C8, C9, C14, C15
1
1UF
1uF
C19
1
100UF
100uF
C20
1
22 uF
C22
1
100K
R1
2
5.1K
R2, R3
1
6.8K
R4
6
10K
R5, R12, R13, R14, R15, R18
1
30.9K
R6
4
1K
R7, R10, R11, R17
1
0.067
R8
1
100
R9
1
10
R16
2
330
R19, R20

Soil metrics design files

The KiCad project lives in the Aryan-git-byte/Soil-metrics repository on GitHub; these links point at the commit this page was built from.

Soil metrics: common questions

What microcontroller does the Soil metrics use?

The Soil metrics is built around the ESP32-S3-WROOM-1U, from the ESP32 family.

How big is the Soil metrics PCB?

The Soil metrics measures 88.3 × 112.3 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Soil metrics?

74 components, from 45 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 Soil metrics design files?

From the Aryan-git-byte/Soil-metrics 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 Soil metrics design in my own project?

Yes, under the terms of its MIT license, which Aryan-git-byte chose for the repository.

Can I test firmware for the Soil metrics 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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