4 layers63 × 72.8 mm
Side Project
gmalberico/Vehicle-Forward-Warning-Sensor-Project
A compact vehicle-mounted prototype that uses LiDAR ranging and wireless communication to warn a driver when an object is detected ahead.
38 parts
2 layers40 × 30 mm
Design files
zninjamonkey/3A-UPS-modulemade for hack club half life in 1 week. cut me some slack
- Size
- 40 × 30 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 40
- Nets
- 29
- Pads
- 121
- Tracks, vias
- 235, 47
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 12 Oct 2026
- Updated
- 13 Oct 2026
Overview
Design files is an open-source printed circuit board by zninjamonkey, from the zninjamonkey/3A-UPS-module repository on GitHub. It is a 2-layer board of 40 × 30 mm with 40 parts on 29 nets, routed with 235 tracks and 47 vias.
It is built around the BQ25306RTER and TPS61089. Its parts include 16 resistors, 14 capacitors, 2 ICs, 2 diodes and 2 connectors.
Main components
2README
README.md3A-UPS-module
made for hack club half life in 1 week. cut me some slack
This is supposed to be a UPS (uninterruptible power supply) module to power portable diy electronics projects.
It was inspired by the adafruit powerboost 1000c, but I wanted usb C connection and to be able to provide higher current to power devices such as a rapsberry pi.
It uses a BQ25306 for battery charging and load sharing, and a TPS61089 to boost the lithium ion battery to a 5V output. both chips are by Texas instruments.
kicad render
schematic
I have not actually built this yet so I'm not sure if it even works
Parts
40| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 10k | Resistor_SMD:R_1206_3216Metric | R8, R9, R12, R13, R16 |
| 4 | 22μF | Capacitor_SMD:C_1206_3216Metric | C3, C4, C7, C8 |
| 2 | 10µF | Capacitor_SMD:C_1206_3216Metric | C13, C14 |
| 2 | 2.2µF | Capacitor_SMD:C_1206_3216Metric | C9, C10 |
| 2 | 5.1k | Resistor_SMD:R_1206_3216Metric | R1, R2 |
| 1 | 0.1μ | Capacitor_SMD:C_1206_3216Metric | C2 |
| 1 | 100k | Resistor_SMD:R_1206_3216Metric | R5 |
| 1 | 10μF | Capacitor_SMD:C_1206_3216Metric | C1 |
| 1 | 120pF | Capacitor_SMD:C_1206_3216Metric | C5 |
| 1 | 127k | Resistor_SMD:R_1206_3216Metric | R7 |
| 1 | 1k | Resistor_SMD:R_1206_3216Metric | R11 |
| 1 | 1µH | Inductor_SMD:L_6.3x6.3_H3 | L2 |
| 1 | 2.2nF | Capacitor_SMD:C_1206_3216Metric | C6 |
| 1 | 2.2μH | Inductor_SMD:L_6.3x6.3_H3 | L1 |
| 1 | 200k | Resistor_SMD:R_1206_3216Metric | R15 |
| 1 | 24k | Resistor_SMD:R_1206_3216Metric | R6 |
| 1 | 300k | Resistor_SMD:R_1206_3216Metric | R3 |
| 1 | 330k | Resistor_SMD:R_1206_3216Metric | R4 |
| 1 | 47 nF | Capacitor_SMD:C_1206_3216Metric | C12 |
| 1 | 470pF | Capacitor_SMD:C_1206_3216Metric | C11 |
| 1 | 560k | Resistor_SMD:R_1206_3216Metric | R14 |
| 1 | 80k (0.5a) | Resistor_SMD:R_1206_3216Metric | R10 |
| 1 | BQ25306RTER | imported:IC_BQ25306RTER | U2 |
| 1 | Battery_Cell | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Horizontal | BT1 |
| 1 | Conn_01x02_Pin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Horizontal | J3 |
| 1 | D | Diode_SMD:D_SMA | D2 |
| 1 | LED | LED_SMD:LED_1206_3216Metric | D4 |
| 1 | Q_PMOS_GDS | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | TPS61089 | imported:modified tps61089 | U1 |
| 1 | USB_C_Receptacle_PowerOnly_6P | Connector_USB:USB_C_Receptacle_GCT_USB4125-xx-x_6P_TopMnt_Horizontal | J1 |
Questions
How big is the Design files PCB?
It measures 40 × 30 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Design files use?
40 parts, built around the BQ25306RTER and TPS61089. 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 Design files KiCad files?
From the zninjamonkey/3A-UPS-module repository on GitHub, at the commit this page was made from: the board is design files/board.kicad_pcb and its schematic design files/board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Design files design in my own project?
Its repository states no licence, so its author keeps all rights: ask zninjamonkey before reusing the design.
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