4 layers42 × 46 mm
Chickensticks
npgo22/APRL-Electrical-New
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73 parts
4 layers42 × 100 mm
Chickensticks
npgo22/chickensticks- Size
- 42 × 100 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 102
- Nets
- 105
- Pads
- 410
- Tracks, vias
- 446, 826
- Pours
- 33
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 24 Apr 2026
- Updated
- 29 Jun 2026
Overview
Chickensticks is an open-source printed circuit board by npgo22, from the npgo22/chickensticks repository on GitHub. It is a 4-layer board of 42 × 100 mm with 102 parts on 105 nets, routed with 446 tracks and 826 vias.
It is built around the LR2021IMLTRT, TJA1042T/3/1J and BQ29700DSE, with the LP5907MFX-3.3, USBLC6-2SC6 and MM3Z10VT1GX among its other parts. Its parts include 32 capacitors, 20 resistors, 11 diodes, 10 connectors and 7 ICs. It belongs with the STM32 boards of this library.
Main components
11
LR2021IMLTRT
QFN-32(5x5)QFN-32(5x5) Buffers, Drivers, Receivers, Transceivers ROHSSEMTECHBuffers, Drivers, Receivers, Transceivers
TJA1042T/3/1J
SOIC-8-40℃~+150℃ 15uA 4.5V~5.5V 5Mbps 70mA SOIC-8 CAN Transceivers ROHSNXP SemiconductorsCAN Transceivers
BQ29700DSE
WSON-6(1.5x1.5)-40℃~+85℃ 1 2.8V 300mV~8V 4uA Lithium Battery Not supported Overcharge protection、Over-discharge protection、Overcurrent Protection、Short-Circuit Protection Protection IC Support WSON-6(1.5x1.5) Battery Management ROHSTexas InstrumentsBattery Management
LP5907MFX-3.3
SOT-23-5-40℃~+125℃@(Tj) 1 10uVrms 12uA 250mA 250mV@(250mA) 3.3V 5.5V 82dB@(1kHz) Fixed Positive Short Circuit Protection、Thermal shutdown、Enable control、Input under-voltage protection、Output discharge SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
MM3Z10VT1GX
SOD-3231 Independent 100nA@7V 10V 300mW 60Ω 9.45V~10.55V ±5% SOD-323 Zener Diodes ROHSNexperiaZener DiodesDMG9926UDM
SOT-26-55℃~+150℃ 2 N-Channel 20V 32mΩ@2.5V 4.2A 78pF 8.3nC@4.5V 83pF 856pF 900mV 980mW N-Channel SOT-26 MOSFETs ROHSDiodes IncorporatedMOSFETs
EC11E18244AU
插件插件 Rotary Encoders ROHSALPSALPINERotary Encoders
MLT-7525
SMD,7.5x7.5mm-20℃~+70℃ 2.5V~4.5V 2.7kHz 2.8mm 3.6V 7.5mm 7.5mm 80dB 95mA Electromagnetic Passive (Externally Driven) SMD,7.5x7.5mm Buzzers ROHSJiangsu Huaneng ElecBuzzers
SKRPANE010
SMD-4P,4.2x3.2mm-40℃~+90℃ 1,000,000 cycles 1.57N 16V 2.5mm 3.2mm 4.2mm J-Lead Oval Button SPST Surface Mount,Vertical Without Bracket SMD-4P,4.2x3.2mm Tactile Switches ROHSALPSALPINETactile Switches
SI2371EDS
SOT-23-55℃~+150℃ 1 P-Channel 1.1W 1.5V 10.6nC@10V 30V 4.8A 45mΩ@10V SOT-23 MOSFETs ROHSVishay IntertechnologyMOSFETs
Parts
102| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 10k | APRLPrints:R_0603 | R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R15, R19 |
| 9 | LED_Small | APRLPrints:LED_0603 | D2, D3, D4, D6, D7, D8, D9, D10, D11 |
| 8 | 100nF | APRLPrints:C_0603 | C2, C3, C4, C5, C6, C14, C25, C32 |
| 6 | 22uF | APRLPrints:C_0805 | C26, C27, C28, C29, C30, C31 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 3 | 100n | APRLPrints:C_0603 | C7, C10, C11 |
| 3 | 1uF | APRLPrints:C_0805 | C1, C13, C15 |
| 3 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J3, J6, J7 |
| 2 | 1.8pF | APRLPrints:C_0402 | C16, C18 |
| 2 | 100R | APRLPrints:R_0603 | R13, R20 |
| 2 | 10pF | APRLPrints:C_0603 | C8, C9 |
| 2 | 5.1k | APRLPrints:R_0603 | R1, R2 |
| 2 | Conn_01x06 | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J4, J5 |
| 2 | MM3Z10VT1G | APRLPrints:SOD-323 | D1, D5 |
| 1 | 100k | APRLPrints:R_0603 | R14 |
| 1 | 12nH | APRLPrints:L_0402 | L4 |
| 1 | 18650 | Battery:BatteryHolder_Keystone_1042_1x18650 | BT1 |
| 1 | 18pF | APRLPrints:C_0402 | C23 |
| 1 | 1nF | APRLPrints:C_0402 | C22 |
| 1 | 2.2k | APRLPrints:R_0603 | R18 |
| 1 | 2.2pF | APRLPrints:C_0402 | C24 |
| 1 | 2.2uF | APRLPrints:C_0805 | C12 |
| 1 | 22nH | APRLPrints:L_0402 | L5 |
| 1 | 22pF | APRLPrints:C_0402 | C17 |
| 1 | 24nH | APRLPrints:L_0402 | L6 |
| 1 | 25 MHz | APRLPrints:3225-4P-L | Y1 |
| 1 | 250mA | APRLPrints:Fuse_0805_2012Metric | F2 |
| 1 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | Q3 |
| 1 | 2k | APRLPrints:R_0603 | R17 |
| 1 | 3.9nH | APRLPrints:L_0402 | L2 |
| 1 | 3.9pF | APRLPrints:C_0402 | C19 |
| 1 | 330R | APRLPrints:R_0603 | R16 |
| 1 | 4.7nH | APRLPrints:L_0402 | L3 |
| 1 | 47pF | APRLPrints:C_0402 | C21 |
| 1 | 500mA | APRLPrints:Fuse_0805_2012Metric | F1 |
| 1 | 7.5nH | APRLPrints:L_0402 | L1 |
| 1 | 7.5pF | APRLPrints:C_0402 | C20 |
| 1 | BQ29700 | Package_SON:WSON-6_1.5x1.5mm_P0.5mm | U7 |
| 1 | Conn_01x03_Pin | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J10 |
| 1 | Conn_01x05_Pin | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J1 |
| 1 | DMG9926UDM | Package_TO_SOT_SMD:SOT-23-6 | Q2 |
| 1 | EC11E18244AU | Library:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm_MountingHoles | SW2 |
| 1 | HRO_TYPE-C-31-M-12 | Library:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J2 |
| 1 | LP5907MFX-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U5 |
| 1 | LR2021IMLTRT | APRLPrints:QFN-32_EP_5.8x5.8_Pitch0.5mm | U4 |
| 1 | MCP73831-2-MC | Library:DFN-8-1EP_3x2mm_P0.5mm_EP1.7x1.4mm | U6 |
| 1 | MLT-7525 | Library:MLT-7525 | BZ1 |
| 1 | S02-25200300 | APRLPrints:S02-25200300-Outline | J8 |
| 1 | SKRPANE010 | APRLPrints:SKRPANE010 | SW1 |
| 1 | SMA | Library:SMA_Amphenol_132203-12_Horizontal | J9 |
| 1 | STM32L433CCTx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U2 |
| 1 | Si2371EDS | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | TG2520SMN 32.0000M-MCGNNM0 | Oscillator:Oscillator_SMD_SeikoEpson_TG2520SMN-xxx-xxxxxx-4Pin_2.5x2.0mm | Y2 |
| 1 | TJA1042T-3 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U1 |
The 101 most common of 102 parts.
Questions
How big is the Chickensticks PCB?
It measures 42 × 100 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Chickensticks use?
102 parts, built around the LR2021IMLTRT, TJA1042T/3/1J, BQ29700DSE and LP5907MFX-3.3. 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 Chickensticks KiCad files?
From the npgo22/chickensticks repository on GitHub, at the commit this page was made from: the board is chickensticks.kicad_pcb and its schematic Power.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Chickensticks design in my own project?
Its repository states no licence, so its author keeps all rights: ask npgo22 before reusing the design.
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