2 layers91.2 × 82.6 mm
Buck converter
Niels-Clayton/self-tuning-buck-converter
Variable frequency and PWM buck converter, controlling for both output voltage and inductor ripple current of the converter.
54 parts2
2 layers81 × 156.1 mm
Nollbricka24
CASE-Association/nollbricka24Nollbricka 2024
- Size
- 81 × 156.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 26
- Nets
- 26
- Pads
- 91
- Tracks, vias
- 146, 3
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 3 Jun 2024
- Updated
- 11 Sep 2025
Overview
Nollbricka24 is an open-source printed circuit board by CASE-Association, from the CASE-Association/nollbricka24 repository on GitHub. It is a 2-layer board of 81 × 156.1 mm with 26 parts on 26 nets, routed with 146 tracks and 3 vias.
It is built around the ATTINY85-20SU, WS2812B and LD1117V50. Its parts include 16 diodes, 2 switches, 1 resistor, 1 IC and 1 connector. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
3
ATTINY85-20SU
SOIC-8-208mil-40℃~+85℃ 10bit 2.7V~5.5V 20MHz 512Byte 512Byte 6 8 Bit 8KB AVR Built-in FLASH SOIC-8-208mil Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
WS2812B
5mm X 5mm Surface Mount RGB LED with Intelligent ControlWorldsemiUncategorised
LD1117V50
TO-220-30℃~+125℃@(Tj) 1 1.2V@(800mA) 100uV 15V 5V 5mA 75dB@(120Hz) 800mA Fixed Over Current Protection、Thermal shutdown Positive TO-220-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSSTMicroelectronicsLinear Voltage Regulators (LDO)
Parts
26| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | WS2812B | case:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm_modified | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16 |
| 4 | , , , | ||
| 2 | SW_Push_Dual | Button_Switch_THT:SW_PUSH_6mm_H5mm | SW1, SW2 |
| 1 | 330 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | ATtiny85-20S | Package_SO:SOIC-8W_5.3x5.3mm_P1.27mm | U1 |
| 1 | LD1117V50 | Package_TO_SOT_THT:TO-220-3_Horizontal_TabDown | VR1 |
| 1 | PINHD-1X2 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1 |
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Questions
How big is the Nollbricka24 PCB?
It measures 81 × 156.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Nollbricka24 use?
26 parts, built around the ATTINY85-20SU, WS2812B and LD1117V50. 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 Nollbricka24 KiCad files?
From the CASE-Association/nollbricka24 repository on GitHub, at the commit this page was made from: the board is nollbricka24.kicad_pcb and its schematic nollbricka24.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Nollbricka24 design in my own project?
Its repository states no licence, so its author keeps all rights: ask CASE-Association before reusing the design.