4 layers45 × 75 mm
2 layers24 × 42 mm
Basalt pcb
oc-ece-mesa/mesa-basaltA cost-effective and easy to assemble STM32C071 based devboard
- Size
- 24 × 42 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 16
- Nets
- 30
- Pads
- 76
- Tracks, vias
- 183, 14
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 20 Apr 2026
- Updated
- 20 Jul 2026
Overview
Basalt pcb is an open-source printed circuit board by oc-ece-mesa, from the oc-ece-mesa/mesa-basalt repository on GitHub. It is a 2-layer board of 24 × 42 mm with 16 parts on 30 nets, routed with 183 tracks and 14 vias.
It is built around the DI78L3.3ZAB, DS04-254-1L-01BK and TS02-66-50-BK-260-SCR-D, with the USB4215-03-A among its other parts. Its parts include 4 connectors, 2 ICs, 2 diodes, 2 switches and 1 capacitor. It belongs with the microcontroller boards boards and the STM32 boards of this library.
Main components
4
DI78L3.3ZAB
TO-92-40℃~+125℃@(Tj) 1 1.7V@(40mA) 100mA 3.3V 30.4V 40uVrms 49dB@(120Hz) 6mA Fixed Over Temperature Protection、Short Circuit Protection Positive TO-92 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSDIOTECVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsDS04-254-1L-01BK
插件,P=2.54mm-40℃~+85℃ 1 2.54mm 24V 25mA SPST 插件,P=2.54mm DIP Switches ROHSCUIDIP Switches
TS02-66-50-BK-260-SCR-D
插件-30℃~+80℃ 12V 2.6N 50mA 5mm 60,000 Cycles 6mm 6mm PC Pin Round Button SPST Through Hole 插件 Tactile Switches ROHSCUITactile Switches
USB4215-03-A
SMD-25℃~+85℃ 1 48V 5A Black Female Type-C USB 2.0 SMD USB Connectors ROHSGlobal Connector Technology (GCT)USB Connectors
README
README.mdMESA Basalt
Basalt is a cost effective and easy to assemble (mostly through-hole components) devboard based on the STM32C071 microcontroller.
Docs
Parts
16| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole_Pad | MountingHole:MountingHole_2.2mm_M2_Pad | H1, H2, H3, H4 |
| 2 | Conn_01x07_Pin | Connector_PinHeader_2.54mm:PinHeader_1x07_P2.54mm_Vertical | J1, J2 |
| 1 | 100nF | Capacitor_THT:C_Disc_D5.1mm_W3.2mm_P5.00mm | C1 |
| 1 | 2kOhm | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R1 |
| 1 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | DI78L3.3ZAB | Package_TO_SOT_THT:TO-92_Inline | U1 |
| 1 | DS04-254-1L-01BK | DS04-254-1L-01BK:SW_DS04-254-1L-01BK | S1 |
| 1 | D_Schottky_Dual_CommonCathode_AKA | Package_TO_SOT_THT:TO-220-3_Vertical | D3 |
| 1 | LED | LED_THT:LED_D3.0mm | D1 |
| 1 | STM32C071F8Px | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U2 |
| 1 | TS02-66-50-BK-260-SCR-D | TS02-66-50-BK-260-SCR-D:SW_TS02-66-50-BK-260-SCR-D | S2 |
| 1 | USB4215-03-A | footprints2:CONN_8p94X6p5X3p16_12L_GCC | J3 |
Questions
How big is the Basalt pcb PCB?
It measures 24 × 42 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Basalt pcb use?
16 parts, built around the DI78L3.3ZAB, DS04-254-1L-01BK, TS02-66-50-BK-260-SCR-D and USB4215-03-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 Basalt pcb KiCad files?
From the oc-ece-mesa/mesa-basalt repository on GitHub, at the commit this page was made from: the board is pcb/basalt-pcb.kicad_pcb and its schematic pcb/basalt-pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Basalt pcb design in my own project?
Its repository states no licence, so its author keeps all rights: ask oc-ece-mesa before reusing the design.
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