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4 layers85.6 × 54 mmSonoLoad, the printed circuit board in 3D

Arduino Nano 33 IoT Breakout board

Size
85.6 × 54 mm
Copper layers
4
Thickness
1.6 mm
Parts
44
Nets
46
Pads
179
Tracks, vias
246, 35
Pours
5
Routed
Yes
KiCad
KiCad 10.0 (file 20260206)
Created
29 Oct 2026
Updated
6 Nov 2026

Overview

SonoLoad is an open-source printed circuit board by Joe-Purvis, from the Joe-Purvis/SonoLoad repository on GitHub. It is a 4-layer board of 85.6 × 54 mm with 44 parts on 46 nets, routed with 246 tracks and 35 vias.

It is built around the 74LVC1G74DP,125, TLV3501AID and BAS70-04. Its parts include 8 connectors, 7 capacitors, 7 resistors, 3 ICs and 2 diodes. It belongs with the AVR (ATmega, ATtiny) boards of this library.

Main components

3

Parts

44
QtyValueFootprintReferences
6MountingHoleMountingHole:MountingHole_2.2mm_M2H1, H2, H3, H4, H5, H6
30.1µFCapacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolderC1, C4, C5
310 kΩResistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolderR1, R8, R9
310µFCapacitor_SMD:C_1210_3225Metric_Pad1.33x2.70mm_HandSolderC2, C3, C6
3Conn_01x04Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_VerticalP_PCD1, P1_LOAD1, P2_LOAD1
3SolderJumper_2_OpenJumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mmJP1, JP2, JP3
3TestPointTestPoint:TestPoint_Keystone_5000-5004_MiniatureTP1, TP2, TP3
2Conn_01x15Connector_PinHeader_2.54mm:PinHeader_1x15_P2.54mm_VerticalP3, P6
1Common_Components:SonoLoad_GitHub_QR
1100 kΩResistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolderR3
1100kΩResistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolderR2
1100pFCapacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolderC7
110KPotentiometer_THT:Potentiometer_Bourns_3266P_HorizontalRV1
12.2 kΩResistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolderR4
122 kΩResistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolderR5
174LVC1G74DP,125Package_SO:TSSOP-8_3x3mm_P0.65mmU1
1Arduino_Nano_33_IoT_AllFunctionsCommon_Components:Socket_Nano33IoT_ArduinoNumberingU2
1BAS70-04Package_TO_SOT_SMD:SOT-23D1
1BAT43W-VDiode_SMD:D_SOD-123D2
1Conn_01x03Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_VerticalP2
1Conn_01x04Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_VerticalJ1_PCD1
1Conn_01x07Connector_PinSocket_2.54mm:PinSocket_1x07_P2.54mm_VerticalJ2
1Conn_01x08Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_VerticalP1
1Conn_01x08Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_VerticalJ5
1Conn_01x10Connector_PinSocket_2.54mm:PinSocket_1x10_P2.54mm_VerticalJ3
1TLV3501AIDPackage_SO:SOIC-8_3.9x4.9mm_P1.27mmU3

Questions

How big is the SonoLoad PCB?

It measures 85.6 × 54 mm and has 4 copper layers, 1.6 mm thick.

What parts does the SonoLoad use?

44 parts, built around the 74LVC1G74DP,125, TLV3501AID and BAS70-04. 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 SonoLoad KiCad files?

From the Joe-Purvis/SonoLoad repository on GitHub, at the commit this page was made from: the board is SonoLoad.kicad_pcb and its schematic ArduinoNano33_IOT.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the SonoLoad design in my own project?

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

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