2 layers60 × 30 mm
Controller
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
11 parts3kApache-2.0
2 layers40 × 52 mm
ΜLevel
magborresen/uLevel2PCB strain gauge for 3D printer bed leveling
- Size
- 40 × 52 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 11
- Nets
- 5
- Pads
- 19
- Tracks, vias
- 736, 1
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 16 Oct 2020
- Updated
- 15 Aug 2021
Overview
ΜLevel is an open-source printed circuit board by magborresen, from the magborresen/uLevel repository on GitHub. It is a 2-layer board of 40 × 52 mm with 11 parts on 5 nets, routed with 736 tracks and 1 via.
Its parts include 2 resistors and 1 connector.
README
README.mduLevel
The project is currently on hold since I sold my HyperCube and bought an Ender-3 instead. I might pick it back up at some point.
The µLevel a PCB strain gauge for 3D printer bed leveling.
It was originally designed for the HyperCube 3D printer, but is supposed to be able to mount on other printers. It is mounted on to of the hotend assembly with the filament/PTFE tube going through the middle of the pcb. This should ensure even pressure from the hotend assembly onto the PCB.
The basic design is using the smallest traces that JLC PCB offers of 0.127mm to create as long traces as possible to create the resistance. This on done on both sides of the PCB. This makes the circuit into a wheatstone bridge together with 2 non-variable resistors that can be an arbitrary value between 1k and 10k ohm.
You can read more about the project here https://magnusborresen.com/index.php/2021/05/27/13103/
Parts
11| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2_Pad | H2, H3, H4, H5 |
| 3 | Net-Tie_2 | µLevel:NetTie-2_SMD_Pad0.127mm | NT_BOTTOM1, NT_GND1, NT_TOP1 |
| 2 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1, R2 |
| 1 | Conn_01x04_Male | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J2 |
| 1 | TeflonHole | µLevel:Teflon_Mounting_Hole | H1 |
Questions
How big is the ΜLevel PCB?
It measures 40 × 52 mm and has 2 copper layers, 1.6 mm thick.
What parts does the ΜLevel use?
11 parts. 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 ΜLevel KiCad files?
From the magborresen/uLevel repository on GitHub, at the commit this page was made from: the board is µLevel.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the ΜLevel design in my own project?
Its repository states no licence, so its author keeps all rights: ask magborresen before reusing the design.
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