4 layers90 × 50 mm
Greenmobi bms
G-Pereira/greenmobi-bms
A VESC compatible battery management system
141 parts31CERN-OHL-S-2.0
2 layers49 × 50 mm
Maja
Tiwalun/zigbiene- Size
- 49 × 50 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 55
- Nets
- 61
- Pads
- 197
- Tracks, vias
- 599, 64
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 3
- Created
- 10 Mar 2014
- Updated
- 29 Apr 2014
Overview
Maja is an open-source printed circuit board by Tiwalun, from the Tiwalun/zigbiene repository on GitHub. It is a 2-layer board of 49 × 50 mm with 55 parts on 61 nets, routed with 599 tracks and 64 vias.
It is built around the TPS70933DBV. Its parts include 29 capacitors, 7 resistors, 4 switches, 4 inductors and 3 ICs.
Main components
1Parts
55| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 1uF | SMD_Packages:SM0603_Capa | C1, C2, C5, C6, C9, C10, C13, C22 |
| 6 | 100nF | SMD_Packages:SM0603_Capa | C11, C12, C14, C15, C16, C17 |
| 3 | 2nH | SMD_Packages:SM0805 | L1, L2, L3 |
| 3 | C | SMD_Packages:SM0603_Capa | C18, C27, C28 |
| 2 | 12pF | SMD_Packages:SM0603_Capa | C3, C7 |
| 2 | 18pF | SMD_Packages:SM0603_Capa | C19, C20 |
| 2 | 1pF | SMD_Packages:SM0603_Capa | C23, C24 |
| 2 | 22pF | SMD_Packages:SM0603_Capa | C4, C8 |
| 2 | 33O | SMD_Packages:SM0603_Resistor | R21, R31 |
| 2 | 47p | SMD_Packages:SM0603_Capa | C21, C31 |
| 2 | BTN | Discret:SW_PUSH_SMALL | SW2, SW3 |
| 2 | LED | LEDs:LED-0603 | D1, D2 |
| 2 | R | SMD_Packages:SM0603_Resistor | R1, R2 |
| 1 | 1.2pF | SMD_Packages:SM0603_Capa | C26 |
| 1 | 1.5k | SMD_Packages:SM0603_Resistor | R32 |
| 1 | 2.2k | SMD_Packages:SM0603_Resistor | R4 |
| 1 | 2.2uF | SMD_Packages:SM0603_Capa | C25 |
| 1 | 3.3nH | SMD_Packages:SM0805 | L4 |
| 1 | 32MHz | Crystals:Crystal_FOX-FE_SMD | X1 |
| 1 | 32kHz | Crystals:Crystal_HC49-SD_SMD | X2 |
| 1 | 56k | SMD_Packages:SM0603_Resistor | R3 |
| 1 | Antenna | Oddities:NetTie-I_Connected_SMD | U3 |
| 1 | CC2538 | RTQ:RTQ | U1 |
| 1 | CONN_3 | Pin_Headers:Pin_Header_Straight_1x03 | K1 |
| 1 | CONN_8 | Pin_Headers:Pin_Header_Straight_1x08 | P2 |
| 1 | JTAG | Pin_Headers:Pin_Header_Straight_2x05 | P1 |
| 1 | RESET | Discret:SW_PUSH_SMALL | SW1 |
| 1 | TPS70933 | SMD_Packages:SOT223 | U2 |
| 1 | USB | Connect:USB_MINI_B | J1 |
| 1 | VAL** | STUB | STUB |
Questions
How big is the Maja PCB?
It measures 49 × 50 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Maja use?
55 parts, built around the TPS70933DBV. 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 Maja KiCad files?
From the Tiwalun/zigbiene repository on GitHub, at the commit this page was made from: the board is maja.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Maja design in my own project?
Its repository states no licence, so its author keeps all rights: ask Tiwalun before reusing the design.
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