HardLabs

Smart soja

virgile-tchidehou·smart-soja·hardware/pcb/circuit_smart-soja/circuit_smart-soja.kicad_pcb

Smart soja PCB layout, top view — open source ESP32 board by virgile-tchidehou

About the Smart soja PCB

Smart soja is an open source ESP32 PCB design by virgile-tchidehou, published on GitHub under the MIT license. It is a 2-layer board measuring 219.6 × 144.8 mm, with 77 components from 38 distinct parts.

Its main chip is the ESP32-DEVKITC-32E, from the ESP32 family. Other key parts include the DHT22. By type, the board carries 22 capacitors, 17 resistors, 14 connectors, 8 diodes, 5 transistors and 2 ICs.

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

From the project

An autonomous IoT-based mobile system for soybean pre-processing, integrating embedded systems, industrial automation, solar energy and cloud connectivity.

Documentation · Architecture · Hardware · Roadmap

SMART-SOJA is an academic engineering project co-developed by Elisa Christelle LOKO and Dodji Virgile TCHIDEHOU. It explores a mobile and connected soybean pre-processing unit designed to improve post-harvest handling in rural environments.

The prototype combines embedded systems, industrial automation, IoT technologies and an off-grid solar/battery architecture. At its current stage, the project is a functional proof of concept: the main sensing, actuation, drying and IoT subsystems have been validated individually or in partial…

Smart soja, from the project README
From the project README

Main components on the Smart soja

DHT22ESP32-DEVKITC-32E

Smart soja bill of materials (BOM)

77 components, 38 distinct parts.

QtyPartRefs
1
DHT22
U1
1
ESP32-DEVKITC-32E
U2
2
Motor_Servo
M1, M2
4
IRLZ44N
Q1, Q2, Q3, Q4
1
BC547
Q5
1
J_IN_12V
J1
1
Soil1
J2
1
J_OUT_12V
J3
1
Soil2
J4
1
LM2596
J5
1
IR1
J6
1
IR2
J7
1
Module HX711
J8
1
J_OUT_5V
J9
1
Motor1 12V
J10
1
HEATER_12V
J11
1
SD Card
J12
1
FAN_12V
J13
1
Motor2 12V
J14
1
Buzzer
BZ1
Show 18 more
QtyPartRefs
1
LCD16X2_I2C
DS1
1
5A
F1
1
Ctrl_M2
RV1
1
Ctrl_M1
RV2
1
URGENCE
SW1
1
ON/OFF
SW2
4
1N5408
D1, D4, D9, D10
4
LED
D2, D3, D7, D8
6
100nF
C1, C3, C4, C6, C7, C9
1
1000uF
C2
2
470uF
C5, C8
5
100n
C10, C13, C16, C17, C18
4
10u
C11, C12, C19, C20
4
470u
C14, C15, C21, C22
2
1k
R1, R3
6
10k
R2, R6, R7, R10, R14, R15
5
220
R4, R5, R12, R13, R18
4
4.7k
R8, R9, R16, R17

Smart soja design files

The KiCad project lives in the virgile-tchidehou/smart-soja repository on GitHub; these links point at the commit this page was built from.

Smart soja: common questions

What microcontroller does the Smart soja use?

The Smart soja is built around the ESP32-DEVKITC-32E, from the ESP32 family.

How big is the Smart soja PCB?

The Smart soja measures 219.6 × 144.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Smart soja?

77 components, from 38 distinct parts. The full bill of materials is listed on this page.

Where can I download the Smart soja design files?

From the virgile-tchidehou/smart-soja repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Smart soja design in my own project?

Yes, under the terms of its MIT license, which virgile-tchidehou chose for the repository.

Can I test firmware for the Smart soja 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.

Similar boards