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2 layers105 × 142.5 mmTestStand, the printed circuit board in 3D

TestStand

ibsal/LERT1

LERT will launch humans to space in 2 months, please give me 10 trillion dollars pls

Size
105 × 142.5 mm
Copper layers
2
Thickness
1.6 mm
Parts
116
Nets
117
Pads
462
Tracks, vias
664, 70
Pours
441
Routed
Yes
KiCad
KiCad 8.0 (file 20240108)
Created
7 Aug 2024
Updated
2 Sep 2025

Overview

TestStand is an open-source printed circuit board by ibsal, from the ibsal/LERT repository on GitHub. It is a 2-layer board of 105 × 142.5 mm with 116 parts on 117 nets, routed with 664 tracks and 70 vias.

It is built around the NRF24L01, TEENSY 4.1 and HX711, with the MAX31855KASA+T, VO615A-X001 and STP85NF55 among its other parts. Its parts include 37 capacitors, 23 resistors, 17 connectors, 12 ICs and 6 inductors. It belongs with the NXP (LPC, Kinetis, i.MX RT) boards of this library.

Main components

7

README

README.md

LERT - Liquid Engine Rocket Team

LERT will launch humans to space in 2 months, please give me 10 trillion dollars pls

AD ASTRA PER IRAM

Parts

116
QtyValueFootprintReferences
1810uFCapacitor_SMD:C_0805_2012MetricC3, C10, C14, C15, C23, C26, C27, C28, C29, C30, C31, C32, C33, C34, C35, C36 +2
12Screw_Terminal_01x03Library:CONN3_2601-1103_WAGJ3, J4, J5, J6, J7, J8, J9, J10, J11, J12, J13, J17
90.1uFCapacitor_SMD:C_0805_2012MetricC1, C2, C4, C5, C7, C8, C9, C11, C12
6100Resistor_SMD:R_0805_2012MetricR2, R3, R7, R8, R12, R13
68.2KResistor_SMD:R_0805_2012MetricR4, R5, R6, R9, R11, R14
6LD1085V50Library:TO-220_STMCR1, CR2, CR3, CR4, CR5, CR6
410KResistor_SMD:R_0805_2012MetricR1, R10, R15, R20
4MountingHole_PadMountingHole:MountingHole_3.2mm_M3_PadH1, H2, H3, H4
3220Resistor_SMD:R_0805_2012MetricR21, R22, R23
32601-1107Library:CONN7_2601-1107_WAGJ1, J2, J18
33.3uHInductor_SMD:L_0402_1005MetricL1, L2, L3
3HX711Package_SO:SOP-16_3.9x9.9mm_P1.27mmU1, U2, U3
3MMBT4403-7-FLibrary:SOT96P240X110-3NQ1, Q2, Q3
3SolderJumper_2_BridgedJumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mmJP1, JP2, JP3
3VO615A-X001Library:DIP-4_VO615A_VISU9, U10, U11
210kResistor_SMD:R_0805_2012MetricR16, R17
21N4148Diode_THT:D_DO-35_SOD27_P7.62mm_HorizontalD1, D2
222pFCapacitor_SMD:C_0805_2012MetricC17, C18
2FerriteBeadInductor_SMD:L_0805_2012MetricFB1, FB2
2LP2980IM5X-3.3/NOPBLibrary:MF05A_TEXU5, U8
10.01uFCapacitor_SMD:C_0805_2012MetricC13
11.5pFCapacitor_SMD:C_0805_2012MetricC21
110nFCapacitor_SMD:C_0805_2012MetricC24
116MhzCrystal:Crystal_SMD_5032-2Pin_5.0x3.2mmY1
11MResistor_SMD:R_0805_2012MetricR19
11nFCapacitor_SMD:C_0805_2012MetricC25
11pFCapacitor_SMD:C_0805_2012MetricC22
12.2uFCapacitor_SMD:C_0805_2012MetricC19
12.7nHInductor_SMD:L_0402_1005MetricL4
122kResistor_SMD:R_0805_2012MetricR18
13.9nHInductor_SMD:L_0402_1005MetricL6
133nFCapacitor_SMD:C_0805_2012MetricC16
14.7pFCapacitor_SMD:C_0805_2012MetricC20
18.2nHInductor_SMD:L_0402_1005MetricL5
1CONN4_2606-1104/010-000_WAGLibrary:2606-1104&slash_010-000J14
1Conn_CoaxialConnector_Coaxial:SMA_Molex_73251-1153_EdgeMount_HorizontalJ15
1MAX31855KASAPackage_SO:SOIC-8_3.9x4.9mm_P1.27mmU6
1NRF24L01Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mmU7
1STP85NF55Library:TO255P460X1020X2008-3PIC1
1Teensy4.1Library:Teensy41U4

Questions

How big is the TestStand PCB?

It measures 105 × 142.5 mm and has 2 copper layers, 1.6 mm thick.

What parts does the TestStand use?

116 parts, built around the NRF24L01, TEENSY 4.1, HX711 and MAX31855KASA+T. 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 TestStand KiCad files?

From the ibsal/LERT repository on GitHub, at the commit this page was made from: the board is Circuits/TestStand/TestStand.kicad_pcb and its schematic Circuits/TestStand/TestStand.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the TestStand design in my own project?

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

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