

Poc one
- Size
- 95.5 × 108 mm
- Copper layers
- 2
- Thickness
- 0.24 mm
- Parts
- 158
- Nets
- 183
- Pads
- 602
- Tracks, vias
- 1,404, 207
- Pours
- 85
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 23 Apr 2026
- Updated
- 18 Aug 2026
Overview
Poc one is an open-source printed circuit board by ItsShadowCone, from the ItsShadowCone/tmfl repository on GitHub. It is a 2-layer board of 95.5 × 108 mm with 158 parts on 183 nets, routed with 1,404 tracks and 207 vias.
It is built around the LMV321IDBVR, XYC-PT0805BC-L4-D and 74HC595D, with the 74HC138, ABM8-272-T3 and LMA2718T421-OA5-2 among its other parts. Its parts include 47 resistors, 31 capacitors, 19 diodes, 8 ICs and 7 transistors. It belongs with the RP2350 boards of this library.
Main components
6LMV321IDBVR
SOT-23-5-40℃~+125℃ 1 10nA 10pA 1MHz 2.1V~5.5V 2.7uV/℃ 20nV/√Hz@10kHz 25mA 45uA 520V/ms 5mV 70dB Rail-to-Rail Input, Rail-to-Rail Output SOT-23-5 Operational Amplifier ROHSUMWOperational AmplifierXYC-PT0805BC-L4-D
0805Ambient Light SensorsNEWOPTO74HC595D
SOP-16-40℃~+105℃ 1 100MHz 15ns@6V,50pF 2V~6V 74HC 8 Asynchronous clear function、Output enable Serial-to-Serial or Parallel Tri-State SOP-16 Shift Registers ROHSJSMSEMIShift Registers74HC138
SOP-160℃~+70℃ 24ns@5.0V,16pF 2V~6V 3/8 5.2mA 5.2mA 5uA 74HC Decoder Reverse function Single Supply SOP-16 Signal Switches, Multiplexers, Decoders ROHSGRSignal Switches, Multiplexers, DecodersABM8-272-T3
SMD3225-4P-40℃~+85℃ 10pF 12MHz 50Ω SMD crystal oscillator ±30ppm ±30ppm SMD3225-4P Crystals ROHSAbraconCrystalsLMA2718T421-OA5-2
SMD-4P,2.8x1.9mm-40℃~+100℃ -42dB 0.9mm 1.6V~3.6V 1.85mm 120uA 2.75mm 300Ω 55dB Omnidirectional SMD-4P,2.8x1.9mm MEMS Microphones ROHSLinkMemsMEMS Microphones
Parts
158| Qty | Value | Footprint | References |
|---|---|---|---|
| 21 | SolderJumper_2_Bridged | Jumper:SolderJumper-2_P1.3mm_Bridged_Pad1.0x1.5mm | JP1, JP2, JP3, JP4, JP10, JP11, JP12, JP13, JP14, JP15, JP16, JP17, JP18, JP19, JP20, JP21 +5 |
| 16 | LED_RABG | TFPC:NH-B1212RGBA-HF | D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19 |
| 13 | 100n | Capacitor_SMD:C_0402_1005Metric | C6, C9, C10, C11, C12, C13, C14, C15, C16, C17, C18, C38, C39 |
| 9 | 10k | Resistor_SMD:R_0402_1005Metric | R15, R16, R17, R21, R22, R23, R42, R43, R44 |
| 7 | 10u | Capacitor_SMD:C_0402_1005Metric | C21, C23, C24, C25, C26, C35, C36 |
| 7 | 220 | Resistor_SMD:R_0402_1005Metric | R18, R24, R26, R26, R26, R27, R28 |
| 5 | 4.7u | Capacitor_SMD:C_0402_1005Metric | C4, C5, C7, C8, C22 |
| 5 | SS8550 Y2 200-350 | PCM_JLCPCB:Q_SOT-23 | Q1, Q3, Q4, Q5, Q6 |
| 4 | 130 | Resistor_SMD:R_0402_1005Metric | R29, R30, R32, R35 |
| 4 | 360 | Resistor_SMD:R_0402_1005Metric | R33, R36, R38, R40 |
| 4 | 82 | Resistor_SMD:R_0402_1005Metric | R31, R34, R37, R39 |
| 3 | 1k | Resistor_SMD:R_0402_1005Metric | R3, R4, R6 |
| 3 | 5.1k | Resistor_SMD:R_0402_1005Metric | R11, R12, R19 |
| 3 | 74HC595D | PCM_JLCPCB:SOIC-16_L9.9-W3.9-P1.27-LS6.0-BL | U10, U12, U14 |
| 3 | LED | LED_SMD:LED_0603_1608Metric | D1, D2, D3 |
| 2 | 15p | Capacitor_SMD:C_0402_1005Metric | C1, C2 |
| 2 | 2.2k | Resistor_SMD:R_0402_1005Metric | R10, R13 |
| 2 | 27 | Resistor_SMD:R_0402_1005Metric | R7, R8 |
| 2 | SW_Push | TFPC:B3U-1100PM | SW1, SW2 |
| 1 | +1V1 | TestPoint:TestPoint_Pad_D1.5mm | TP5 |
| 1 | +3V3 | TestPoint:TestPoint_Pad_D1.5mm | TP3 |
| 1 | +3V8 / VSYS | TestPoint:TestPoint_Pad_D1.5mm | TP2 |
| 1 | 0 | PCM_JLCPCB:R_0603 | R1 |
| 1 | 1.5k | Resistor_SMD:R_0402_1005Metric | R20 |
| 1 | 10 | Resistor_SMD:R_0402_1005Metric | R25 |
| 1 | 100 | Resistor_SMD:R_0402_1005Metric | R46 |
| 1 | 100k | Resistor_SMD:R_0402_1005Metric | R45 |
| 1 | 100m | Resistor_SMD:R_1206_3216Metric | R14 |
| 1 | 100p | Capacitor_SMD:C_0402_1005Metric | C37 |
| 1 | 100u | Capacitor_SMD:CP_Elec_5x5.4 | C27 |
| 1 | 1u | Capacitor_SMD:C_0402_1005Metric | C19 |
| 1 | 2N7002 | PCM_JLCPCB:Q_SOT-23 | Q2 |
| 1 | 2k | Resistor_SMD:R_0402_1005Metric | R41 |
| 1 | 2u2 | Inductor_SMD:L_0603_1608Metric | L2 |
| 1 | 3.3u | TFPC:AOTA-B201610S3R3-101-T | L1 |
| 1 | 33 | Resistor_SMD:R_0402_1005Metric | R5 |
| 1 | 330 | Resistor_SMD:R_0402_1005Metric | R9 |
| 1 | 47n | Capacitor_SMD:C_0603_1608Metric | C20 |
| 1 | 74HC138 | Package_SO:JEITA_SOIC-16_3.9x9.9mm_P1.27mm | U6 |
| 1 | ABM8-272-T3 | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | BAT_SYS_PWR HY-DSIC02LS | Button_Switch_SMD:SW_DIP_SPSTx02_Slide_9.78x7.26mm_W8.61mm_P2.54mm | SW3 |
| 1 | BQ24195LRGER | Package_DFN_QFN:VQFN-24-1EP_4x4mm_P0.5mm_EP2.45x2.45mm | U3 |
| 1 | Battery_Cell | TFPC:BH-18650-B6AA002 | BT1 |
| 1 | Connector, USB-TYPE-C-16P | PCM_JLCPCB:TYPE-C-SMD_HX-TYPE-C-16PIN | J3 |
| 1 | DEBUG | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J5 |
| 1 | DISPLAY_SENSE+ | TestPoint:TestPoint_Pad_D1.5mm | TP8 |
| 1 | DISPLAY_SENSE- | TestPoint:TestPoint_Pad_D1.5mm | TP9 |
| 1 | GND | TestPoint:TestPoint_Pad_D1.5mm | TP6 |
| 1 | LMA2718T421-OA5-2 | TFPC:LMA2718T421-OA5-2 | MK1 |
| 1 | LMV321IDBVR | PCM_JLCPCB:SOT-23-5_L3.0-W1.7-P0.95-LS2.8-BR | U22 |
| 1 | MASTER_FANOUT | Connector_PinHeader_2.54mm:PinHeader_2x10_P2.54mm_Vertical | J1 |
| 1 | MIC_OUT | TestPoint:TestPoint_Pad_D1.5mm | TP11 |
| 1 | MIC_RAW | TestPoint:TestPoint_Pad_D1.5mm | TP10 |
| 1 | NCP1117-3.3_SOT223 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U4 |
| 1 | RP2354_80QFN | Package_DFN_QFN:QFN-80-1EP_10x10mm_P0.4mm_EP3.4x3.4mm | U2 |
| 1 | SUBG_FANOUT | Connector_PinHeader_2.54mm:PinHeader_2x10_P2.54mm_Vertical | J2 |
| 1 | TOUCH_FANOUT | Connector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_Vertical | J4 |
| 1 | VBAT | TestPoint:TestPoint_Pad_D1.5mm | TP7 |
| 1 | VBUS | TestPoint:TestPoint_Pad_D1.5mm | TP1 |
| 1 | VBUS-SENSE- | TestPoint:TestPoint_Pad_D1.5mm | TP4 |
| 1 | XYC-PT0805BC-L4-D | PCM_JLCPCB:D_0805 | Q7 |
The 157 most common of 158 parts.
Questions
How big is the Poc one PCB?
It measures 95.5 × 108 mm and has 2 copper layers, 0.24 mm thick.
What parts does the Poc one use?
158 parts, built around the LMV321IDBVR, XYC-PT0805BC-L4-D, 74HC595D and 74HC138. 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 Poc one KiCad files?
From the ItsShadowCone/tmfl repository on GitHub, at the commit this page was made from: the board is hardware/poc-one/poc-one.kicad_pcb and its schematic hardware/frontcover/frontcover.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Poc one design in my own project?
Its repository states no licence, so its author keeps all rights: ask ItsShadowCone before reusing the design.
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