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2 layers125 × 75 mmAlarm sensors, the printed circuit board in 3D

Alarm sensors

rojer/myhome
Size
125 × 75 mm
Copper layers
2
Thickness
1.6 mm
Parts
60
Nets
80
Pads
244
Tracks, vias
353, 10
Pours
6
Routed
Yes
KiCad
KiCad 5 (file 20171130)
Created
6 Sep 2021
Updated
25 Aug 2025

Overview

Alarm sensors is an open-source printed circuit board by rojer, from the rojer/myhome repository on GitHub. It is a 2-layer board of 125 × 75 mm with 60 parts on 80 nets, routed with 353 tracks and 10 vias.

It is built around the ESP32-WROOM-32D. Its parts include 13 resistors, 12 diodes, 12 connectors, 11 ICs and 4 capacitors. It belongs with the sensors and measurement boards and the ESP32 boards of this library.

Main components

1

Parts

60
QtyValueFootprintReferences
12330Resistor_SMD:R_0603_1608MetricR1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R12, R13
103572.12201:DIP-14_W7.62mm_1267U1, U2, U3, U4, U5, U6, U7, U8, U9, U10
4MountingHoleMountingHole:MountingHole_4mmH2, H3, H4, H5
210uFCapacitor_THT:CP_Radial_D5.0mm_P2.00mmC1, C2
10.1uFCapacitor_SMD:C_0603_1608MetricC4
110KResistor_SMD:R_0603_1608MetricR11
11uFCapacitor_SMD:C_0603_1608MetricC3
1BTNButton_Switch_THT:SW_PUSH_6mmSW2
1DebugConnector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_VerticalJ12
1ESP32-WROOM-32DRF_Module:ESP32-WROOM-32U12
1MountingHoleMountingHole:MountingHole_6mmH1
1PC02S1203APC02S1203A:PC02S1203APS1
1PWROSTVN04A150:OSTVN04A150J11
1PWRLED_THT:LED_D3.0mmD12
1ResetButton_Switch_THT:SW_PUSH_6mmSW1
1STATUSLED_THT:LED_D3.0mmD11
1Z 4OSTVN04A150:OSTVN04A150J4
1Z 5OSTVN04A150:OSTVN04A150J5
1Z 6OSTVN04A150:OSTVN04A150J6
1Z 7OSTVN04A150:OSTVN04A150J7
1Z1LED_THT:LED_D3.0mmD1
1Z10LED_THT:LED_D3.0mmD10
1Z2LED_THT:LED_D3.0mmD2
1Z3LED_THT:LED_D3.0mmD3
1Z4LED_THT:LED_D3.0mmD4
1Z5LED_THT:LED_D3.0mmD5
1Z6LED_THT:LED_D3.0mmD6
1Z7LED_THT:LED_D3.0mmD7
1Z8LED_THT:LED_D3.0mmD8
1Z9LED_THT:LED_D3.0mmD9
1ZONE 1OSTVN04A150:OSTVN04A150J1
1ZONE 10OSTVN04A150:OSTVN04A150J10
1ZONE 2OSTVN04A150:OSTVN04A150J2
1ZONE 3OSTVN04A150:OSTVN04A150J3
1ZONE 8OSTVN04A150:OSTVN04A150J8
1ZONE 9OSTVN04A150:OSTVN04A150J9

Questions

How big is the Alarm sensors PCB?

It measures 125 × 75 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Alarm sensors use?

60 parts, built around the ESP32-WROOM-32D. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Alarm sensors KiCad files?

From the rojer/myhome repository on GitHub, at the commit this page was made from: the board is alarm_sensors/alarm_sensors.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Alarm sensors design in my own project?

Its repository states no licence, so its author keeps all rights: ask rojer before reusing the design.

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