2 layers30 × 30 mm
2 layers50 × 50 mm
Folded LED ball PCB
- Size
- 50 × 50 mm
- Copper layers
- 2
- Thickness
- 0.6 mm
- Parts
- 149
- Nets
- 50
- Pads
- 596
- Tracks, vias
- 1,308, 160
- Pours
- 8
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 13 Jul 2017
- Updated
- 12 Jul 2020
Overview
2x2 is an open-source printed circuit board by brainsmoke, from the brainsmoke/miniball repository on GitHub. It is a 2-layer board of 50 × 50 mm with 149 parts on 50 nets, routed with 1,308 tracks and 160 vias.
It is built around the MCP73831 and NCP170AXV330. Its parts include 48 capacitors, 16 resistors, 16 ICs, 8 diodes and 8 transistors. It belongs with the robots and motor control boards of this library.
Main components
2README
driver_pcb_2.0/README.mddriverpcb 2.0
Circuit design derived from Travis Goodspeed's Goodwatch project, replacing the CC430F6137 with the smaller footprint CC430F5137:
https://github.com/travisgoodspeed/goodwatch
Lipo charging/load decoupling part of the circuit adapted from:
http://blog.zakkemble.co.uk/a-lithium-battery-charger-with-load-sharing/
Parts
149| Qty | Value | Footprint | References |
|---|---|---|---|
| 28 | 100n | passives:C_0402_NoSilk | C1, C1, C1, C1, C3, C3, C3, C3, C4, C4, C4, C4, C10, C10, C10, C10 +12 |
| 16 | - | passives:small_hole | DATALED1, DATALED1, DATALED1, DATALED1, GNDBATT1, GNDBATT1, GNDBATT1, GNDBATT1, GNDLED1, GNDLED1, GNDLED1, GNDLED1, VLED1, VLED1, VLED1, VLED1 |
| 12 | 56K | passives:R_0402_NoSilk | R2, R2, R2, R2, R3, R3, R3, R3, R4, R4, R4, R4 |
| 8 | 19pF | passives:C_0402_NoSilk | C11, C11, C11, C11, C12, C12, C12, C12 |
| 8 | AO3401-P Mosfet | TO_SOT_Packages_SMD:SOT-23 | Q1, Q1, Q1, Q1, Q2, Q2, Q2, Q2 |
| 8 | CONN_01X01 | Pin_Headers:Pin_Header_Straight_1x01_Pitch2.54mm | GND1, GND1, GND1, GND1, VIN1, VIN1, VIN1, VIN1 |
| 4 | + | passives:small_hole | VBATT1, VBATT1, VBATT1, VBATT1 |
| 4 | 0.47u | passives:C_0402_NoSilk | C8, C8, C8, C8 |
| 4 | 0433bm15a0001 | goodwatch21:0433bm15a0001 | U4, U4, U4, U4 |
| 4 | 15K | passives:R_0402_NoSilk | R1, R1, R1, R1 |
| 4 | 1u | passives:C_0402_NoSilk | C2, C2, C2, C2 |
| 4 | 1u | C_0402_NoSilk | C5, C5, C5, C5 |
| 4 | BSL | Pin_Headers:Pin_Header_Straight_1x06_Pitch1.00mm | J3, J3, J3, J3 |
| 4 | CC430F513x | goodwatch21:CC430F513x | U2, U2, U2, U2 |
| 4 | CONN_01X03 | SMD_Packages:Conn-3 | SW1, SW1, SW1, SW1 |
| 4 | Conn_01x01 | small_hole | ANT1, ANT1, ANT1, ANT1 |
| 4 | D_Schottky | Diodes_SMD:D_0603 | D1, D1, D1, D1 |
| 4 | FA128 | goodwatch21:FA128 | X1, X1, X1, X1 |
| 4 | L | passives:C_0402_NoSilk | L1, L1, L1, L1 |
| 4 | MCP73831 | TO_SOT_Packages_SMD:SOT-23-5 | U1, U1, U1, U1 |
| 4 | VDROP | passives:R0603 | D2, D2, D2, D2 |
| 4 | ncp170axv330 | sot:sot-563 | U3, U3, U3, U3 |
| 1 | outline:panel |
The 145 most common of 149 parts.
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Questions
How big is the 2x2 PCB?
It measures 50 × 50 mm and has 2 copper layers, 0.6 mm thick.
What parts does the 2x2 use?
149 parts, built around the MCP73831 and NCP170AXV330. 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 2x2 KiCad files?
From the brainsmoke/miniball repository on GitHub, at the commit this page was made from: the board is driver_pcb_2.0/2x2.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the 2x2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask brainsmoke before reusing the design.