HardLabs

Ac sensor

sshoecraft·ac-sensor·hardware/pcb.kicad_pcb

Ac sensor PCB layout, top view — open source ESP32 board by sshoecraft

About the Ac sensor PCB

Ac sensor is an open source ESP32 PCB design by sshoecraft, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 80 × 30 mm, with 20 components from 20 distinct parts.

Its main chip is the ESP32-C3-MINI-1, from the ESP32 family. Other key parts include the TJA1050T and AMS1117-3.3. By type, the board carries 6 connectors, 4 capacitors, 3 ICs, 3 resistors, 2 switches and 2 diodes.

It belongs with the sensors designs in this gallery.

From the project

AC Sensor used in hydronic HVAC system

This directory contains the complete KiCad design files for the ESP32-C3 CAN Bus + 4x JST sensor board.

- Board Size: 80mm x 30mm (compact form factor) - Layers: 2-layer PCB - Thickness: 1.6mm standard - Manufacturing: Optimized for JLCPCB automated assembly - JST Layout: 2 connectors per side for balanced cable management

Balanced placement on both sides for better cable management:

Main components on the Ac sensor

ESP32-C3-MINI-1TJA1050TAMS1117-3.3

Ac sensor bill of materials (BOM)

20 components, 20 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-C3-MINI-1
Espressif Systems
U1
1
TJA1050T
TJA1050
NXP
U2
1
AMS1117-3.3
AMS1117-5.0
Advanced Monolithic Systems
U3
1
54602-908LF
RJ45_8P8C
Amphenol
J1
1
C124375
Programming
BOOMELE
J2
1
SENSOR_1_D0
J3
1
SENSOR_2_D1
J4
1
SENSOR_3_D2
J5
1
SENSOR_4_D3
J6
1
B3U-1000P
BOOT
Omron
SW1
1
B3U-1000P
RESET
Omron
SW2
1
19-213/R6C-AL1M2VY/3T
PWR_RED
Everlight
D1
1
19-213/GHC-YR1S2/3T
STS_GRN
Everlight
D2
1
16YXF470MEFCT1
470uF
Rubycon
C1
1
CL21A226MQQNNNE
22uF
Samsung Electro-Mechanics
C2
1
CC0805KRX7R9BB104
100nF
YAGEO
C3
1
CL21A106KAYNNNE
100nF
Samsung Electro-Mechanics
C4
1
0805W8F1200T5E
330R
Uniroyal Elec
R1
1
0805W8F1002T5E
330R
Uniroyal Elec
R2
1
0805W8F1002T5E
10K
Uniroyal Elec
R3

Ac sensor design files

The KiCad project lives in the sshoecraft/ac-sensor repository on GitHub; these links point at the commit this page was built from.

Ac sensor: common questions

What microcontroller does the Ac sensor use?

The Ac sensor is built around the ESP32-C3-MINI-1, from the ESP32 family.

How big is the Ac sensor PCB?

The Ac sensor measures 80 × 30 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Ac sensor?

20 components, from 20 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 Ac sensor design files?

From the sshoecraft/ac-sensor repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Ac sensor design in my own project?

Yes, under the terms of its CERN-OHL-P-2.0 license, which sshoecraft chose for the repository.

Can I test firmware for the Ac sensor 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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