LLUPS
About the LLUPS PCB
LLUPS is an open source PCB design by laforestlabs, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 140 × 90 mm, with 37 components from 27 distinct parts.
Other key parts include the USBLC6-2SC6, BQ24072RGTR, HY2113-KB5B, MT3608 and AP2112K-3.3TRG1. By type, the board carries 11 resistors, 8 capacitors, 6 ICs, 3 connectors, 3 diodes and 2 battery holders.
It belongs with the power & battery designs in this gallery.
From the project
LLUPS - Lithium Li-ion Universal Power Supply (KiCad 9)
A compact PCB module providing regulated 5V and 3.3V power from two 18650 Li-ion cells (1S2P), charged via USB-C with passthrough capability.
Requirements: - Python 3.10+ - KiCad 9 with pcbnew Python bindings - FreeRouting JAR (for automated routing) - KiCraft submodule (included, installed via pip above)
Requires KiCad 9 CLI tools (kicad-cli) for netlist export.
Main components on the LLUPS
LLUPS bill of materials (BOM)
37 components, 27 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | USBLC6-2SC6 TECH PUBLIC | SOT-23-6 | U1 |
| 1 | BQ24072RGTR BQ24072 Texas Instruments | VQFN-16-1EP_3.5x3.5mm_P0.5mm_EP2.1x2.1mm | U2 |
| 1 | HY2113-KB5B HYCON Tech | SOT-23-6 | U3 |
| 1 | MT3608 XI'AN Aerosemi | SOT-23-6 | U4 |
| 1 | AP2112K-3.3TRG1 AP2112K-3.3 Diodes Inc | SOT-23-5 | U5 |
| 1 | LN61CN3302MR-G NATLINEAR | SOT-23-3 | U6 |
| 1 | FS8205A TECH PUBLIC | SOT-23-6 | Q1 |
| 1 | USB4085-GF-A USB_C GCT | USB_C_Receptacle_GCT_USB4085 | J1 |
| 1 | MTP125-1105S1 Output MINTRON | PinHeader_1x05_P2.54mm_Vertical | J2 |
| 1 | Debug BOOMELE | PinHeader_1x03_P2.54mm_Vertical | J3 |
| 2 | BH-18650-A1AJ006 18650 MYOUNG | BatteryHolder_MYOUNG_BH-18650-A1AJ006 | BT1, BT2 |
| 1 | MF-PSMF020X-2 2A_PTC BOURNS | Fuse_0805_2012Metric | F1 |
| 1 | NCP15XH103F03RC 10k_NTC Murata | R_0402_1005Metric | RT1 |
| 1 | KT-0603R CHG Hubei KENTO | LED_0603_1608Metric | D1 |
| 1 | LTST-C193TGKT-5A PGOOD LITEON | LED_0603_1608Metric | D2 |
| 1 | SS14 MDD | D_SMA | D3 |
| 1 | PNLS252012-4R7M 4.7u DMBJ | L_0805_2012Metric | L1 |
| 2 | CL21A106KAYNNNE 10u Samsung | C_0805_2012Metric | C1, C5 |
| 3 | CL05A475MP5NRNC 4.7u Samsung | C_0402_1005Metric | C2, C3, C4 |
| 1 | 0805X226M160NT 22u FH | C_0805_2012Metric | C6 |
Show 7 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | CL05A105KA5NQNC 1u Samsung | C_0402_1005Metric | C7, C8 |
| 2 | 0402WGF5101TCE 5.1k UNI-ROYAL | R_0402_1005Metric | R1, R2 |
| 3 | 0402WGF1001TCE 1k UNI-ROYAL | R_0402_1005Metric | R3, R6, R7 |
| 1 | 0402WGF1501TCE 1.5k UNI-ROYAL | R_0402_1005Metric | R4 |
| 3 | RC0402FR-0710KL 10k YAGEO | R_0402_1005Metric | R5, R8, R10 |
| 1 | RC0402FR-0775KL 75k YAGEO | R_0402_1005Metric | R9 |
| 1 | 0402WGF1003TCE 100k UNI-ROYAL | R_0402_1005Metric | R11 |
LLUPS design files
The KiCad project lives in the laforestlabs/LLUPS repository on GitHub; these links point at the commit this page was built from.
- LayoutLLUPS.kicad_pcb
- SchematicLLUPS.kicad_sch
- BOMBOM.csv
LLUPS: common questions
How big is the LLUPS PCB?
The LLUPS measures 140 × 90 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the LLUPS?
37 components, from 27 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the LLUPS design files?
From the laforestlabs/LLUPS repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the LLUPS design in my own project?
Yes, under the terms of its GPL-3.0 license, which laforestlabs chose for the repository.
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