Maka BMS
About the Maka BMS PCB
Maka BMS is an open source PCB design by ocean-discovery-league, published on GitHub. It is a 4-layer board measuring 39 × 35.2 mm, with 95 components from 51 distinct parts.
Other key parts include the AP63205, TPS70933DBV, BQ77915, LTC6994CS6-1 and LTC4007. By type, the board carries 37 resistors, 26 capacitors, 8 ICs, 6 transistors, 4 diodes and 3 inductors.
It belongs with the power & battery designs in this gallery.
From the project
All files needed to build a Maka Niu
Instructions for fabrication and software installation here.
Please direct all questions concerning fabrication plans or direct purchase of the Delrin housing to Dr. Allan Adams of Oceanic Labs (allan@oceanic-labs.org)
Main components on the Maka BMS
Maka BMS bill of materials (BOM)
95 components, 51 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AP63205 | TSOT-23-6 | U1 |
| 2 | TPS70933DBV | SOT-23-5 | U2, U7 |
| 1 | BQ77915 | TSSOP-24_4.4x7.8mm_P0.65mm | U3 |
| 1 | LTC6994CS6-1 | TSOT-23-6 | U4 |
| 1 | LTC4007 | SSOP-24_3.9x8.7mm_P0.635mm | U5 |
| 1 | MP3213 | MSOP-8-1EP_3x3mm_P0.65mm_EP1.95x2.15mm | U6 |
| 1 | MCP3221 | SOT-23-5 | U8 |
| 4 | FDC645N | SOT-23-6_mosfet | Q1, Q2, Q3, Q6 |
| 2 | Si3483CDV | SOT-23-6_mosfet | Q4, Q5 |
| 1 | SAM16035-ND | SAMTEC_T1M-10-F-SH-L-K | J8 |
| 1 | Molex 087340-1424 | Molex_87340-1424_B | J9 |
| 1 | 0.0 | TruHole_Batter_Contact_Pad_with_9mm_clear | 0.0 |
| 1 | 3.4 | TestPoint_THTPad_D1.5mm_Drill0.7mm | 3.4 |
| 2 | 7.4 | TruHole_Batter_Contact_Pad_with_9mm_clear | 7.4_1, 7.4_2 |
| 1 | 11.1 | TestPoint_THTPad_D1.5mm_Drill0.7mm | 11.1 |
| 1 | 12V_OUT | TestPoint_THTPad_D1.5mm_Drill0.7mm | 12V_OUT1 |
| 1 | GND_OUT | TestPoint_THTPad_D1.5mm_Drill0.7mm | GND_OUT1 |
| 2 | 10K | R_0402_1005Metric | TH1, TH2 |
| 2 | 30V 3A | SMA(DO-214AC) | D1, D2 |
| 2 | 60V 3A | D_SOD-123EP | D3, D4 |
Show 31 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 4.7uH | L_1008_2520Metric | L1 |
| 2 | 10uH | Inductor5x5mm | L2, L3 |
| 5 | 10uF | C_0603_1608Metric | C1, C7, C11, C15, C16 |
| 7 | 0.1uF | C_0402_1005Metric | C2, C3, C4, C5, C13, C18, C26 |
| 6 | 1uF | C_0402_1005Metric | C6, C8, C9, C12, C19, C24 |
| 1 | 1nF | C_0402_1005Metric | C10 |
| 2 | 4.7uF | C_0603_1608Metric | C14, C25 |
| 1 | 0.47uF | C_0402_1005Metric | C17 |
| 1 | 15nF | C_0402_1005Metric | C20 |
| 1 | 4.7nF | C_0402_1005Metric | C21 |
| 2 | 22uF | C_0603_1608Metric | C22, C23 |
| 7 | 1K | R_0402_1005Metric | R1, R2, R3, R4, R5, R6, R13 |
| 4 | 100K | R_0402_1005Metric | R7, R16, R23, R34 |
| 1 | 0.02 | R_1206_3216Metric | R8 |
| 1 | 15K | R_0402_1005Metric | R9 |
| 4 | 10K | R_0402_1005Metric | R10, R15, R17, R32 |
| 3 | 1M | R_0402_1005Metric | R11, R12, R14 |
| 1 | 470K | R_0402_1005Metric | R18 |
| 1 | 390K | R_0402_1005Metric | R19 |
| 1 | 887K | R_0402_1005Metric | R20 |
| 1 | 110K | R_0402_1005Metric | R21 |
| 1 | 32.4K | R_0402_1005Metric | R22 |
| 1 | 309K | R_0402_1005Metric | R24 |
| 1 | 6.04K | R_0402_1005Metric | R25 |
| 2 | 3.01K | R_0402_1005Metric | R26, R27 |
| 1 | 4.99K | R_0402_1005Metric | R28 |
| 1 | 0.25 | R_1206_3216Metric | R29 |
| 1 | 26.7K | R_0402_1005Metric | R30 |
| 1 | 0.05 | R_1206_3216Metric | R31 |
| 2 | 300K | R_0402_1005Metric | R33, R37 |
| 2 | DNP | R_0402_1005Metric | R35, R36 |
Maka BMS design files
The KiCad project lives in the ocean-discovery-league/maka-niu-design-files repository on GitHub; these links point at the commit this page was built from.
Maka BMS: common questions
How big is the Maka BMS PCB?
The Maka BMS measures 39 × 35.2 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Maka BMS?
95 components, from 51 distinct parts. The full bill of materials is listed on this page.
Where can I download the Maka BMS design files?
From the ocean-discovery-league/maka-niu-design-files repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Maka BMS design in my own project?
The repository has no license, so all rights stay with ocean-discovery-league. Use it as a reference, and ask the author before reusing the design.
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