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4 layers48.1 × 35 mmNexus 01 schematic (3), the printed circuit board in 3D

Nexus 01 schematic (3)

Rohan317685/Fira

I present you fira: A flight controller! I have made a accurate ish render of the frame we have spent somewhat weeks its just we were trying to make sure it was affordable and have some lists for kits this could be in!…

Size
48.1 × 35 mm
Copper layers
4
Thickness
1.6 mm
Parts
48
Nets
78
Pads
214
Tracks, vias
489, 65
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
28 Feb 2026
Updated
5 Mar 2026

Overview

Nexus 01 schematic (3) is an open-source printed circuit board by Rohan317685, from the Rohan317685/Fira repository on GitHub, published under the MIT licence. It is a 4-layer board of 48.1 × 35 mm with 48 parts on 78 nets, routed with 489 tracks and 65 vias.

It is built around the ESP32-S3-WROOM-1-N8, BMP280 and MPU-6050, with the XC6220B331MR, 1N4148W and SI2302 among its other parts. Its parts include 14 resistors, 9 capacitors, 8 diodes, 6 connectors and 5 ICs. It belongs with the ESP32 boards of this library.

Main components

6

README

README.md

I present you fira: A flight controller! I have made a accurate ish render of the frame we have spent somewhat weeks its just we were trying to make sure it was affordable and have some lists for kits this could be in! It has 4 s12302 Mosfets and a esp32-s3-wroom-1 controller and can be controlled entirely via WIFI! Screenshot 2026-03-04 194316 I attached a render of what it can be used for :) Its meant for simple tiny drones!

Screenshot 2026-03-01 151021 Screenshot 2026-03-01 210202 That is the schematic + pcb! Credits to:

@Rohan for creating the render, schematic and repo @traffic person for routing the entire pcb and helping with technical issues!

Parts

48
QtyValueFootprintReferences
610KResistor_SMD:R_0603_1608MetricR3, R4, R5, R6, R7, R14
50.1UFCapacitor_SMD:C_0603_1608MetricC1, C2, C4, C5, C6
5Conn_01x02_MaleConnector_PinHeader_1.00mm:PinHeader_1x02_P1.00mm_VerticalJ1, J2, J3, J4, J6
41N4148WDiode_SMD:D_SOD-123D1, D2, D3, D4
4SI2302Package_TO_SOT_SMD:SOT-23Q1, Q2, Q3, Q4
310UFCapacitor_SMD:C_0805_2012MetricC3, C7, C8
3LEDLED_SMD:LED_0603_1608MetricD5, D6, D7
22.2KResistor_SMD:R_0603_1608MetricR1, R2
24.7KResistor_SMD:R_0603_1608MetricR12, R13
25.1KResistor_SMD:R_0603_1608MetricR10, R11
2SW_PushButton_Switch_SMD:SW_Push_1TS009xxxx-xxxx-xxxx_6x6x5mmSW1, SW2
11KResistor_SMD:R_0603_1608MetricR9
11UFCapacitor_SMD:C_0603_1608MetricC9
12KResistor_SMD:R_0603_1608MetricR8
1BMP280Package_LGA:Bosch_LGA-8_2x2.5mm_P0.65mm_ClockwisePinNumberingU3
1D_TVSDiode_SMD:D_SOD-323D8
1ESP32-S3-WROOM-1RF_Module:ESP32-S3-WROOM-1U1
1MCP73831-2-OTPackage_TO_SOT_SMD:SOT-23-5U5
1MPU-6050Sensor_Motion:InvenSense_QFN-24_4x4mm_P0.5mmU2
1USB_C_Receptacle_USB2.0Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12J5
1XC6220B331MRPackage_TO_SOT_SMD:SOT-23-5U6

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Questions

How big is the Nexus 01 schematic (3) PCB?

It measures 48.1 × 35 mm and has 4 copper layers, 1.6 mm thick.

What parts does the Nexus 01 schematic (3) use?

48 parts, built around the ESP32-S3-WROOM-1-N8, BMP280, MPU-6050 and XC6220B331MR. 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 Nexus 01 schematic (3) KiCad files?

From the Rohan317685/Fira repository on GitHub, at the commit this page was made from: the board is Nexus 01 schematic (3).kicad_pcb and its schematic Nexus 01 schematic.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Nexus 01 schematic (3) design in my own project?

Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).