4 layers50 × 50 mm IRISV2 BOTTOM, the printed circuit board in 3D

IRISV2 BOTTOM

a complete redesign of my flight computer, IRIS

Size: 50 × 50 mm
Copper layers: 4
Thickness: 1.6 mm
Parts: 94
Nets: 63
Pads: 265
Tracks, vias: 365, 87
Pours: 15
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 11 Apr 2026
Updated: 27 Jul 2026

Overview

IRISV2 BOTTOM is an open-source printed circuit board by teletype7, from the teletype7/IRIS-v2 repository on GitHub. It is a 4-layer board of 50 × 50 mm with 94 parts on 63 nets, routed with 365 tracks and 87 vias.

It is built around the MP4323GDE-Z, TPS613222ADBV and BC846. Its parts include 38 resistors, 17 transistors, 13 capacitors, 12 connectors and 4 diodes.

Main components

Parts

Qty	Value	Footprint	References
15	10k	Resistor_SMD:R_0402_1005Metric	R4, R32, R33, R34, R36, R37, R38, R44, R45, R46, R47, R48, R49, R51, R53
9	1k	Resistor_SMD:R_0402_1005Metric	R3, R29, R30, R31, R41, R42, R43, R50, R52
9	BC846	Package_TO_SOT_SMD:SOT-23-3	Q1, Q2, Q3, Q7, Q8, Q9, Q13, Q15, Q17
9	Screw_Terminal_01x02	kf350-2p:kf350-2p	J1, J9, J10, J11, J12, J13, J14, J15, J16
6	PJA3404A	Package_TO_SOT_SMD:SOT-23-3	Q4, Q5, Q6, Q10, Q11, Q12
4	100k	Resistor_SMD:R_0402_1005Metric	R10, R12, R13, R35
4	MountingHole_Pad	MountingHole:MountingHole_3.2mm_M3_ISO7380_Pad_TopBottom	3v3, 3v3, GND, GND
3	100nF	Capacitor_SMD:C_0603_1608Metric	C11, C12, C13
2	1uF	Capacitor_SMD:C_0603_1608Metric	C5, C7
2	22uF	Capacitor_SMD:C_1210_3225Metric	C9, C10
2	4.7k	Resistor_SMD:R_0402_1005Metric	R1, R2
2	4.7uF	Capacitor_SMD:C_1210_3225Metric	C14, C15
2	D_Schottky	SK34SMA-3G:DIOM5027X240N	D1, D2
2	MCAC011P03L-TP	MCAC011P03L:MCAC100N08YATP	Q14, Q16
1	0.015	Resistor_SMD:R_2512_6332Metric	R5
1	100nF	Capacitor_SMD:C_0402_1005Metric	C6
1	10pF	Capacitor_SMD:C_0402_1005Metric	C8
1	120pF	Capacitor_SMD:C_0603_1608Metric	C1
1	12k	Resistor_SMD:R_0402_1005Metric	R39
1	15k	Resistor_SMD:R_0402_1005Metric	R7
1	2.2uH	SPR5020TA-2R2M:SRP5020TA2R2M	L2
1	2.2uH	Inductor_SMD:L_1008_2520Metric	L1
1	22uF	Capacitor_SMD:C_1206_3216Metric	C2
1	240	Resistor_SMD:R_0603_1608Metric	R8
1	3.3_GOOD	LED_SMD:LED_0805_2012Metric	D3
1	31.6k	Resistor_SMD:R_0402_1005Metric	R9
1	3k	Resistor_SMD:R_0402_1005Metric	R40
1	5	Resistor_SMD:R_0603_1608Metric	R6
1	580	Resistor_SMD:R_0603_1608Metric	R11
1	5_GOOD	LED_SMD:LED_0805_2012Metric	D4
1	Buzzer	CMT-8504-03-SMT:CMT850403SMTTR	BZ1
1	Conn_01x02	Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical	J2
1	Conn_01x20_MountingPin	FFC3B07-20-T:FFC3B07-20-T	J3
1	INA237	Package_SO:VSSOP-10_3x3mm_P0.5mm	U2
1	MP4323GDE-Z	MPM4323GDE:QFN-12_MP4323_MNP	U3
1	Screw_Terminal_01x03	OSTTE030104:OSTTE030104	J4
1	TPS613222ADBV	Package_TO_SOT_SMD:SOT-23-5	U1

Questions

How big is the IRISV2 BOTTOM PCB?

It measures 50 × 50 mm and has 4 copper layers, 1.6 mm thick.

What parts does the IRISV2 BOTTOM use?

94 parts, built around the MP4323GDE-Z, TPS613222ADBV and BC846. 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 IRISV2 BOTTOM KiCad files?

From the teletype7/IRIS-v2 repository on GitHub, at the commit this page was made from: the board is pcb/IRISV2_BOTTOM/IRISV2_BOTTOM.kicad_pcb and its schematic pcb/IRISV2_BOTTOM/IRISV2_BOTTOM.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the IRISV2 BOTTOM design in my own project?

Its repository states no licence, so its author keeps all rights: ask teletype7 before reusing the design.

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/teletype7-iris-v2-irisv2-bottom" title="IRISV2 BOTTOM in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/teletype7-iris-v2-irisv2-bottom.jpg" alt="IRISV2 BOTTOM" width="1200" height="900">

A picture that opens the board, for a README

[![IRISV2 BOTTOM](https://pcbkit.io/embed/boards/teletype7-iris-v2-irisv2-bottom.jpg?size=s)](https://pcbkit.io/boards/teletype7-iris-v2-irisv2-bottom)

Source

Repository: teletype7/IRIS-v2
Board file: pcb/IRISV2_BOTTOM/IRISV2_BOTTOM.kicad_pcb
Commit: f5e17bb
Licence: Not stated

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