HardLabs

ATX-24-Pin-Inline-Power-Monitoring-Board

KazmirFahrier·ATX-24-Pin-Inline-Power-Monitoring-Board

ATX-24-Pin-Inline-Power-Monitoring-Board

About the ATX-24-Pin-Inline-Power-Monitoring-Board

ATX-24-Pin-Inline-Power-Monitoring-Board is an open source ESP32 PCB design by KazmirFahrier, published on GitHub under the MIT license. It is a board, with 49 components from 20 distinct parts.

Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the AP2112K-3.3, INA219AxD, TMP102xxDRL and MCP6001-OT. By type, the board carries 22 resistors, 12 capacitors, 8 ICs, 5 connectors, 1 transistor and 1 diode.

It belongs with the sensors designs in this gallery.

From the project

Schematic-stage KiCad design for an inline ATX 24-pin power monitor: per-rail voltage and current sensing, temperature, and UART/I2C/USB over an ESP32-S3

A hardware module that sits inline between a desktop ATX power supply and the motherboard, passing every power rail straight through while monitoring voltage, current and temperature.

Scope: schematic capture in KiCad, driven to a clean Electrical Rule Check. This is a schematic-stage design — there is no PCB layout in this repository.

The board connects through the standard 24-pin ATX connector and passes all rails to the motherboard unmodified, so the host system needs no changes. It samples the electrical parameters on each rail and exposes them over three interfaces.

Main components on the ATX-24-Pin-Inline-Power-Monitoring-Board

AP2112K-3.3ESP32-S3-WROOM-1INA219AxDTMP102xxDRLMCP6001-OT

ATX-24-Pin-Inline-Power-Monitoring-Board bill of materials (BOM)

49 components, 20 distinct parts.

QtyPartRefs
1
AP2112K-3.3
U1
1
ESP32-S3-WROOM-1
U2
3
INA219AxD
U3, U4, U5
1
TMP102xxDRL
U6
2
MCP6001-OT
U7, U8
1
2N3904
Q1
1
ATX_IN
J1
1
ATX_OUT
J2
2
Conn_01x04
J3, J4
1
USB_C_Receptacle_USB2.0_14P
J5
1
LED
D1
3
1uF
C1, C2, C4
9
0.1uF
C3, C5, C6, C7, C8, C9, C10, C11 +1
5
10k
R1, R8, R9, R10, R11
3
4.7K
R2, R3, R6
2
5.1k
R4, R5
1
1k
R7
8
100k
R12, R13, R15, R17, R18, R19, R20, R21
1
0.01
R14
2
27k
R16, R22

ATX-24-Pin-Inline-Power-Monitoring-Board design files

The KiCad project lives in the KazmirFahrier/ATX-24-Pin-Inline-Power-Monitoring-Board repository on GitHub; these links point at the commit this page was built from.

ATX-24-Pin-Inline-Power-Monitoring-Board: common questions

What microcontroller does the ATX-24-Pin-Inline-Power-Monitoring-Board use?

The ATX-24-Pin-Inline-Power-Monitoring-Board is built around the ESP32-S3-WROOM-1, from the ESP32 family.

How many components are on the ATX-24-Pin-Inline-Power-Monitoring-Board?

49 components, from 20 distinct parts. The full bill of materials is listed on this page.

Where can I download the ATX-24-Pin-Inline-Power-Monitoring-Board design files?

From the KazmirFahrier/ATX-24-Pin-Inline-Power-Monitoring-Board repository on GitHub, which has the schematic; the links under Design files point to each one.

Can I use the ATX-24-Pin-Inline-Power-Monitoring-Board design in my own project?

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

Can I test firmware for the ATX-24-Pin-Inline-Power-Monitoring-Board 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