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2 layers80 × 35 mmΜSpot, the printed circuit board in 3D

A small Li-Ion battery spot welder

Size
80 × 35 mm
Copper layers
2
Thickness
1.6 mm
Parts
57
Nets
35
Pads
261
Tracks, vias
462, 34
Pours
2
Routed
Yes
KiCad
KiCad 5 (file 20171130)
Created
16 Oct 2020
Updated
28 Feb 2021

Overview

ΜSpot is an open-source printed circuit board by magborresen, from the magborresen/uSpot repository on GitHub. It is a 2-layer board of 80 × 35 mm with 57 parts on 35 nets, routed with 462 tracks and 34 vias.

It is built around the ATTINY404-SSN, AP65111AWU and FAN3111ESX, with the PSMN0R9-30YLDX, BZX84C3V3 and 2SS100L-W among its other parts. Its parts include 23 resistors, 8 capacitors, 7 transistors, 6 diodes and 4 ICs. It belongs with the power boards and the AVR (ATmega, ATtiny) boards of this library.

Main components

6

Parts

57
QtyValueFootprintReferences
682RResistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolderR15, R17, R18, R19, R20, R21
6PSMN0R9-30YLDPackage_TO_SOT_SMD:LFPAK56Q1, Q2, Q3, Q4, Q5, Q6
510kResistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolderR1, R8, R9, R10, R16
31k8Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolderR13, R22, R24
31nCapacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolderC7, C8, C12
35kResistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolderR12, R14, R23
3BZX84C3V3Package_TO_SOT_SMD:SOT-23D5, D6, D7
2220Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolderR6, R7
222uFCapacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolderC1, C5
2Conn_01x01MountingHole:MountingHole_4.3mm_M4_Pad_ViaBAT-1, BAT+1
2MountingHoleMountingHole:MountingHole_2.2mm_M2_ISO7380_PadH1, H2
10.1uFCapacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolderC6
1100kResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR11
1100kResistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolderTH1
113kResistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolderR5
122uFCapacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolderC4
12SS100L-WDiode_SMD:D_SOD-123FD2
13.3uCapacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolderC9
140.2kResistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolderR4
16.5uInductor_SMD:L_0805_2012Metric_Pad1.15x1.40mm_HandSolderL1
175kResistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolderR2
1ADS7029Package_SO:VSSOP-8_2.3x2mm_P0.5mmU5
1AP65111AWUPackage_TO_SOT_SMD:TSOT-23-6U1
1ATtiny404-SSPackage_SO:SOIC-14_3.9x8.7mm_P1.27mmU3
1BlueLED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolderD3
1Conn_01x03Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_VerticalJ1
1Conn_01x04Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical_SMD_Pin1LeftJ2
1FAN3111EPackage_TO_SOT_SMD:SOT-23-5_HandSolderingU4
1Q_PMOS_DGSPackage_TO_SOT_SMD:SOT-23Q7
1RedLED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolderD1
1Rotary_Encoder_SwitchµSpot:EC11_Rotary_EncoderSW1

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Questions

How big is the ΜSpot PCB?

It measures 80 × 35 mm and has 2 copper layers, 1.6 mm thick.

What parts does the ΜSpot use?

57 parts, built around the ATTINY404-SSN, AP65111AWU, FAN3111ESX and PSMN0R9-30YLDX. 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 ΜSpot KiCad files?

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

Can I use the ΜSpot design in my own project?

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