4 layers16 × 44 mm
Pilkbrain
cr1tbit/pilkbrain
The schematic is still a bit messy, just for the reference for now.
106 parts1
2 layers25 × 50 mm
Papajbadge
rough-rat/papajbadge1habemus lāminam!
- Size
- 25 × 50 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 56
- Nets
- 46
- Pads
- 176
- Tracks, vias
- 585, 96
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 6 Jul 2025
- Updated
- 9 Sep 2025
Overview
Papajbadge is an open-source printed circuit board by rough-rat, from the rough-rat/papajbadge repository on GitHub. It is a 2-layer board of 25 × 50 mm with 56 parts on 46 nets, routed with 585 tracks and 96 vias.
It is built around the PAM8302AASCR, TF-123-ARP9H17 and W25Q32JVSSIQ, with the TS24CA and FS-1540 among its other parts. Its parts include 16 capacitors, 15 resistors, 4 ICs, 3 crystals and 2 diodes.
Main components
5
PAM8302AASCR
MSOP-8-40℃~+85℃ 0.3% 1-Channel 2.5Wx1@4Ω 2V~5.5V 4mA 50dB 80dB 85% Class D Filterless architecture MSOP-8 Audio Amplifiers ROHSDiodes IncorporatedAudio Amplifiers
TF-123-ARP9H17
SMD-25℃~+85℃ 1.7mm Connector and Ejector MicroSD Card (TF Card) Push-Pull SMD SD Card / Memory Card Connector ROHSXUNPUSD Card / Memory Card Connector
W25Q32JVSSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 133MHz 1uA 2.7V~3.6V 20 Years 32Mbit 3ms SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
TS24CA
SMD,4.6x1.8mm-20℃~+70℃ 1.6N 1.9mm 12V 20 thousand cycles 3.5mm 4.7mm 50mA Black No Rectangular Button SMD(SMT) Tab SPST Surface Mount, Right Angle Without Bracket SMD,4.6x1.8mm Tactile Switches ROHSSHOU HANTactile Switches
FS-1540
--40℃~+85℃ 0.8W 15mm 15mm 4mm 5% 500mW 850Hz 87dB 8Ω Surface Mount - Speakers ROHSFUETSpeakers
README
README.mdpapajbadge
Parts
56| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 10k | Resistor_SMD:R_0402_1005Metric | R3, R4, R5, R6, R7, R8, R10, R11, R13 |
| 6 | 100n | Capacitor_SMD:C_0402_1005Metric | C4, C9, C12, C16, C17, C18 |
| 5 | 2.2uF | Capacitor_SMD:C_0402_1005Metric | C1, C3, C5, C13, C14 |
| 4 | 100k | Resistor_SMD:R_0402_1005Metric | R2, R12, R16, R17 |
| 3 | MountingHole_Pad | MountingHole:MountingHole_2.7mm_M2.5_DIN965_Pad | H1, H2, H3 |
| 3 | RX | BadgeMagic:TestPoint_Pad_D0.6mm | TP1, TP2, TP3 |
| 3 | RX | TestPoint:TestPoint_Pad_D1.0mm | TP4, TP6, TP7 |
| 2 | 100 | Resistor_SMD:R_0402_1005Metric | R1, R9 |
| 2 | 10uF | Capacitor_SMD:C_0603_1608Metric | C6, C7 |
| 2 | 12p | Capacitor_SMD:C_0402_1005Metric | C10, C11 |
| 2 | LED | LED_SMD:LED_0603_1608Metric | D1, D3 |
| 2 | TS24CA | easyeda2kicad:SW-SMD_TS24CA | SW1, SW2 |
| 1 | 220pF | Capacitor_SMD:C_0402_1005Metric | C2 |
| 1 | 32 MHz | Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm | Y1 |
| 1 | Antenna_Chip | RF_Antenna:Johanson_2450AT18x100 | AE1 |
| 1 | Battery_Cell | Battery:BatteryHolder_Multicomp_BC-2001_1x2032 | BT1 |
| 1 | CH582F_C3001175 | easyeda2kicad:QFN-28_L4.0-W4.0-P0.40-BL-EP2.8 | U6 |
| 1 | Conn_01x08 | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J5 |
| 1 | FS-1540 | easyeda2kicad:BUZ-SMD_5P-L15.0-W15.0-P13.7-BL | SPK1 |
| 1 | PAM8302AASCR | easyeda2kicad:MSOP-8_L3.0-W3.0-P0.65-LS5.0-BL | U7 |
| 1 | Simple_Addon_v2 | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | X1 |
| 1 | TF-123-ARP9H17 | easyeda2kicad:TF-SMD_TF-123-ARP9H15 | U3 |
| 1 | TIM1 | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP2 |
| 1 | W25Q32JVSS | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U1 |
| 1 | XO-32K | Crystal:Crystal_SMD_2012-2Pin_2.0x1.2mm | Y2 |
Questions
How big is the Papajbadge PCB?
It measures 25 × 50 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Papajbadge use?
56 parts, built around the PAM8302AASCR, TF-123-ARP9H17, W25Q32JVSSIQ and TS24CA. 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 Papajbadge KiCad files?
From the rough-rat/papajbadge repository on GitHub, at the commit this page was made from: the board is muzg/papajbadge.kicad_pcb and its schematic muzg/papajbadge.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Papajbadge design in my own project?
Its repository states no licence, so its author keeps all rights: ask rough-rat before reusing the design.
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