HardLabs

Blockchain iot

meeTeam05·blockchain-iot·hardware/Smart-Air.kicad_pcb

Blockchain iot PCB layout, top view — open source ESP32 board by meeTeam05

About the Blockchain iot PCB

Blockchain iot is an open source ESP32 PCB design by meeTeam05, published on GitHub under the MIT license. It is a 2-layer board measuring 100 × 100 mm, with 62 components from 27 distinct parts.

Its main chip is the ESP32-S3-DevKitC, from the ESP32 family. Other key parts include the RTC_DS3231M, AMS1117 and EL357N-G. By type, the board carries 19 resistors, 11 capacitors, 10 diodes, 7 ICs, 5 connectors and 4 transistors.

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

From the project

1. Measures and controls. The board reads temperature, humidity, CO and NO₂, shows them on a display, drives three relays (Fan, Lamp, Filter), and streams status to the cloud over MQTT. A mobile app provisions the board over BLE, shows live data and sends commands. 2. Warns early

1. Measures and controls. The board reads temperature, humidity, CO and NO₂, shows them on a display, drives three relays (Fan, Lamp, Filter), and streams status to the cloud over MQTT. A mobile app provisions the board over BLE, shows live data and sends commands. 2. Warns early. Firmware evaluates CO and NO₂ against the Vietnamese QCVN 03:2019/BYT limits (short-term and 8-hour averages), a 10-minute projection and a small on-device TFLite Micro model. It raises a local buzzer alarm; it never switches relays by itself. 3. Proves incidents. When the alert level changes to early warning or…

Blockchain iot, from the project README
From the project README

Main components on the Blockchain iot

RTC_DS3231MAMS1117EL357N-GESP32-S3-DevKitC

Blockchain iot bill of materials (BOM)

62 components, 27 distinct parts.

QtyPartRefs
1
RTC_DS3231M
IC1
1
AMS1117
U1
3
EL357N-G
U2, U4, U5
1
~
U3
1
ESP32-S3-DevKitC
U6
4
SI2300
Q1, Q2, Q3, Q4
1
Screw_Terminal_01x04
J1
1
Conn_Jack-DC
J2
1
CO
J3
1
NO2
J4
1
SHT31
J5
1
CR1220
BT1
1
Buzzer
BZ1
3
G5NB
K1, K2, K3
1
R_Potentiometer
RV1
3
1N4007
D1, D6, D9
5
LED
D2, D3, D5, D7, D10
1
BAT54C
D8
1
BZT52C5V1
D11
1
10uF
C1
Show 7 more
QtyPartRefs
5
1uF
C2, C5, C6, C8, C9
5
100nF
C3, C4, C7, C10, C11
10
10K
R1, R2, R6, R7, R9, R11, R14, R16 +2
5
10K/0603/1%
R5, R10, R13, R15, R17
1
1K
R8
1
1K/0603/1%
R12
2
4.7K
R20, R21

Blockchain iot design files

The KiCad project lives in the meeTeam05/blockchain-iot repository on GitHub; these links point at the commit this page was built from.

Blockchain iot: common questions

What microcontroller does the Blockchain iot use?

The Blockchain iot is built around the ESP32-S3-DevKitC, from the ESP32 family.

How big is the Blockchain iot PCB?

The Blockchain iot measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Blockchain iot?

62 components, from 27 distinct parts. The full bill of materials is listed on this page.

Where can I download the Blockchain iot design files?

From the meeTeam05/blockchain-iot repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Blockchain iot design in my own project?

Yes, under the terms of its MIT license, which meeTeam05 chose for the repository.

Can I test firmware for the Blockchain iot 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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