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Test 08. With ESP32 mini

henkjannl·RoomThermostat·04 Electrical/Redesign PCB 3.0/PCB design/Test 08. With ESP32 mini/Test 08. With ESP32 mini.kicad_pcb

Test 08. With ESP32 mini PCB layout, top view — open source ESP32 board by henkjannl

About the Test 08. With ESP32 mini PCB

Test 08. With ESP32 mini is an open source ESP32 PCB design by henkjannl, published on GitHub under the MIT license. It is a 2-layer board measuring 72 × 32 mm, with 25 components from 19 distinct parts.

Its main chip is the mini_esp32, from the ESP32 family. Other key parts include the EL357N-G. By type, the board carries 7 diodes, 6 resistors, 4 connectors, 4 capacitors, 3 ICs and 1 transistor.

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

From the project

Opentherm room thermostat that can be controlled through Telegram, but also locally

I wanted to create a room thermostat that can be controlled remotely ('honey, did you remember to switch off the heating?') but which also remains fully operational if internet connectivity is lost. Therefore it can be controlled through Telegram, but also via the hardware unit if WiFi is down. This is also useful since visitors may not want to use Telegram.

Test 08. With ESP32 mini, from the project README
From the project README

Main components on the Test 08. With ESP32 mini

EL357N-Gmini_esp32

Test 08. With ESP32 mini bill of materials (BOM)

25 components, 19 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
EL357N-G
U5, U6
1
mini_esp32
U7
1
MMBT2907A
Q1
1
OpenTherm
J1
1
Laser range sensor
J2
1
ST7789
J3
1
Encoder
J4
4
1N4148WS
D1, D2, D3, D4
1
BZT52C4V7S
D5
1
BZT52C15V
D6
1
BZT52C4V3
D7
2
10N
10n
C1, C3
2
2N2
2n2
C2, C4
1
200
R1
1
150
R2
1
330
R3
1
4K7
4k7
R4
1
1K5
1k5
R5
1
330
R6

Test 08. With ESP32 mini design files

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

Test 08. With ESP32 mini: common questions

What microcontroller does the Test 08. With ESP32 mini use?

The Test 08. With ESP32 mini is built around the mini_esp32, from the ESP32 family.

How big is the Test 08. With ESP32 mini PCB?

The Test 08. With ESP32 mini measures 72 × 32 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Test 08. With ESP32 mini?

25 components, from 19 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 Test 08. With ESP32 mini design files?

From the henkjannl/RoomThermostat 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 Test 08. With ESP32 mini design in my own project?

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

Can I test firmware for the Test 08. With ESP32 mini 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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