2 layers75 × 75 mm
2 layers125 × 125 mm
LED circles
pknodle/LED_circles- Size
- 125 × 125 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 134
- Nets
- 126
- Pads
- 471
- Tracks, vias
- 844, 141
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 9 Jun 2025
- Updated
- 20 Sep 2026
Overview
LED circles is an open-source printed circuit board by pknodle, from the pknodle/LED_circles repository on GitHub. It is a 2-layer board of 125 × 125 mm with 134 parts on 126 nets, routed with 844 tracks and 141 vias.
It is built around the M95256-WMN6P, BD33GA3WEFJ-E2 and USB4125-GF-A. Its parts include 76 ICs, 37 resistors, 12 capacitors, 2 connectors and 1 diode. It belongs with the STM32 boards of this library.
Main components
3
M95256-WMN6P
SO-8-40℃~+85℃ 2.5V~5.5V 200 Years 20MHz 256Kbit 4,000,000 Cycles 5ms Hardware write protection function、Software write protection function、Built-in power-on reset (POR)、Built-in error correction code (ECC) function、Built-in write enable latch (WEL) SPI SO-8 EEPROM ROHSSTMicroelectronicsEEPROM
BD33GA3WEFJ-E2
HTSOP-8-J-25℃~+85℃ 1 14V 3.3V 300mA Fixed Over Current Protection、Thermal shutdown、Enable control Positive HTSOP-8-J Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSROHM SemiconductorVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
USB4125-GF-A
SMD-30℃~+85℃ 1 3A 48V 6P Black Female Surface Mount, Right Angle Type-C SMD USB Connectors ROHSGlobal Connector Technology (GCT)USB Connectors
Parts
134| Qty | Value | Footprint | References |
|---|---|---|---|
| 72 | ~ | LED_circles_footprints:IN-PI55TAT | U1, U2, U10, U11, U12, U13, U14, U15, U16, U17, U18, U19, U20, U21, U22, U23 +56 |
| 27 | 0 | Resistor_SMD:R_0805_2012Metric | R1, R2, R3, R10, R11, R12, R13, R25, R26, R27, R28, R29, R30, R31, R32, R33 +11 |
| 8 | 10uF | Capacitor_SMD:C_0805_2012Metric | C1, C2, C3, C4, C5, C6, C7, C11 |
| 5 | 10k | Resistor_SMD:R_0805_2012Metric | R37, R46, R47, R49, R50 |
| 4 | MountingHole | MountingHole:MountingHole_2.5mm | H1, H2, H3, H4 |
| 3 | .1uF | Capacitor_SMD:C_0805_2012Metric | C8, C12, C13 |
| 2 | 500 | Resistor_SMD:R_0805_2012Metric | R38, R39 |
| 2 | 5k1 | Resistor_SMD:R_0805_2012Metric | R43, R44 |
| 2 | M95256-WMN6P | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U75, U76 |
| 2 | TestPoint | TestPoint:TestPoint_Pad_3.0x3.0mm | TP1, TP2 |
| 1 | 1uF | Capacitor_SMD:C_0805_2012Metric | C10 |
| 1 | 510 | Resistor_SMD:R_0805_2012Metric | R48 |
| 1 | BD33GA3WEFJ | Package_SO:HTSOP-8-1EP_3.9x4.9mm_P1.27mm_EP2.4x3.2mm | U74 |
| 1 | Conn_ARM_SWD_EDGE | LED_circles_footprints:ARM_SWD_EDGE | J1 |
| 1 | LED | LED_SMD:LED_0805_2012Metric | D1 |
| 1 | STM32G071KBTxN | Package_QFP:LQFP-32_7x7mm_P0.8mm | U77 |
| 1 | USB4125-GF-A | Connector_USB:USB_C_Receptacle_GCT_USB4125-xx-x-0190_6P_TopMnt_Horizontal | J2 |
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Questions
How big is the LED circles PCB?
It measures 125 × 125 mm and has 2 copper layers, 1.6 mm thick.
What parts does the LED circles use?
134 parts, built around the M95256-WMN6P, BD33GA3WEFJ-E2 and USB4125-GF-A. 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 LED circles KiCad files?
From the pknodle/LED_circles repository on GitHub, at the commit this page was made from: the board is LED_circles/LED_circles.kicad_pcb and its schematic 01-Intro/class1/class1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the LED circles design in my own project?
Its repository states no licence, so its author keeps all rights: ask pknodle before reusing the design.