HardLabs

Terraesp2

fehlfarbe·terraesp·hardware/kicad_v2/terraesp2/terraesp2.kicad_pcb

Terraesp2 PCB layout, top view — open source ESP32 board by fehlfarbe

About the Terraesp2 PCB

Terraesp2 is an open source ESP32 PCB design by fehlfarbe, published on GitHub under the MIT license. It is a 2-layer board measuring 125.7 × 71.6 mm, with 77 components from 34 distinct parts.

Its main chip is the ESP32-WROOM-32, from the ESP32 family. Other key parts include the AMS1117 and LM2596S-5. By type, the board carries 25 connectors, 23 resistors, 7 diodes, 6 transistors, 4 fuses and 4 relays.

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

From the project

ESP32 terrarium controller

With this project you can control your terrarium's temperature, light, sprinkler and so on via webinterface.

Reads different Sensors for temperature and humidity (DHT22, SHT3x, DS1820, ...) and analog sensors to measure soil moisture etc. Timers for day/night light switch Actions if threshold for a sensor is reached e.g. to start sprinkler for 10s if humidity is under threshold Webinterface: 24h log of temperature and humidity, actions etc. control for buttons/actors and sliders for PWM pins change config OTA update via WiFi

Terraesp2, from the project README
From the project README

Main components on the Terraesp2

ESP32-WROOM-32AMS1117LM2596S-5

Terraesp2 bill of materials (BOM)

77 components, 34 distinct parts.

QtyPartRefs
1
ESP32-WROOM-32
U1
1
AMS1117
U2
1
LM2596S-5
U3
2
DMG4800LSD
Q1, Q2
4
Q_NPN_BCE
Q3, Q4, Q5, Q6
3
5V_OUT
J1, J3, J5
4
12V
J2, J4, J6, J7
1
ESP-Prog
J8
1
Conn_01x02_Male
J9
1
PWM0
J10
1
PWM1
J11
1
PWM2
J12
1
PWM3
J13
4
SSR_OUT
J14, J16, J17, J18
1
AC_IN
J15
4
I2C
J19, J20, J21, J22
1
A0
J23
1
A1
J24
1
DHT
J25
4
2A
F1, F2, F3, F4
Show 14 more
QtyPartRefs
4
G3MB202PDC12
K1, K2, K3, K4
1
D
D1
1
WS2812
D2
4
LED
D3, D4, D5, D6
1
SS54
D7
1
33uH
L1
1
10uF
C1
1
22uF
C2
1
470uF
C3
1
220uF
C4
1
500
R1
10
10k
R2, R5, R6, R9, R10, R12, R15, R18 +2
8
1k
R3, R4, R7, R8, R11, R14, R17, R20
4
220
R13, R16, R19, R22

Terraesp2 design files

The KiCad project lives in the fehlfarbe/terraesp repository on GitHub; these links point at the commit this page was built from.

Terraesp2: common questions

What microcontroller does the Terraesp2 use?

The Terraesp2 is built around the ESP32-WROOM-32, from the ESP32 family.

How big is the Terraesp2 PCB?

The Terraesp2 measures 125.7 × 71.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Terraesp2?

77 components, from 34 distinct parts. The full bill of materials is listed on this page.

Where can I download the Terraesp2 design files?

From the fehlfarbe/terraesp repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Terraesp2 design in my own project?

Yes, under the terms of its MIT license, which fehlfarbe chose for the repository.

Can I test firmware for the Terraesp2 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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