NSSL EFM Motor Control
About the NSSL EFM Motor Control PCB
NSSL EFM Motor Control is an open source PCB design by LeemanGeophysicalLLC, published on GitHub under the MIT license. It is a 2-layer board measuring 65.9 × 45.7 mm, with 81 components from 38 distinct parts.
Other key parts include the 1-0000196, 1-0001532, 1-0000456, 1-0000452 and 1-0001493. By type, the board carries 30 resistors, 24 capacitors, 9 ICs, 8 connectors, 4 diodes and 3 transistors.
From the project
EFM Motor Control PCB
One of the paddles on the instrument houses a motor driver, which reads motor speed from an encoder and controls power to the motor to maintain a constant rotation rate of the instrument. We also monitor the current supplied to the motor and the temperature of the control board, logging all of this data to a rolling log file. This log is used for debugging and diagnosing any flight-related failures.
Main components on the NSSL EFM Motor Control
NSSL EFM Motor Control bill of materials (BOM)
81 components, 38 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 1-0000196 | 1-0000196 | U1 |
| 1 | 1-0001532 | 1-0001532 | U2 |
| 2 | 1-0000456 | 1-0000456 | U3, U4 |
| 1 | 1-0000452 | 1-0000452 | U5 |
| 1 | 1-0001493 | 1-0001493 | U6 |
| 1 | 1-0000779 | 1-0000779 | U7 |
| 1 | 1-0001755 | 1-0001755 | U8 |
| 1 | 1-0000207 | 1-0000207 | U9 |
| 1 | 1-0001670 | 1-0001670 | Q1 |
| 2 | 1-0000163 | 1-0000163 | Q2, Q3 |
| 1 | 1-0000721 | 1-0000721 | Y1 |
| 2 | 0-0000000 NP_Conn_01x02_Relief | SolderWire_1x02_Relief | J1, J2 |
| 1 | 0-0000000 NP_Conn_01x06 | PinHeader_1x06_P2.54mm_Horizontal | J3 |
| 1 | 1-0000034 | 1-0000034 | J4 |
| 1 | 0-0000000 NP_Conn_01x02 | PinHeader_1x02_P2.54mm_Vertical | J5 |
| 2 | 0-0000000 NP_Conn_01x04 | PinHeader_1x04_P2.54mm_Vertical | J6, J8 |
| 1 | 1-0001156 | 1-0001156 | J7 |
| 1 | 1-0001547 | 1-0001547 | F1 |
| 1 | 3-0000265 barepcb | barepcb | PCB1 |
| 1 | 1-0001672 | 1-0001672 | D1 |
Show 18 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 1-0001537 | 1-0001537 | D2 |
| 1 | 1-0000601 | 1-0000601 | D3 |
| 1 | 1-0000599 | 1-0000599 | D4 |
| 3 | 1-0000005 | 1-0000005 | C1, C6, C19 |
| 3 | 1-0000018 | 1-0000018 | C2, C5, C16 |
| 14 | 1-0000007 | 1-0000007 | C3, C4, C7, C9, C10, C11, C12, C17 +6 |
| 1 | 1-0000176 | 1-0000176 | C8 |
| 1 | 1-0000016 | 1-0000016 | C13 |
| 2 | 1-0000017 | 1-0000017 | C14, C15 |
| 4 | 1-0000174 | 1-0000174 | R1, R3, R12, R13 |
| 1 | 1-0001756 | 1-0001756 | R2 |
| 9 | 1-0000010 | 1-0000010 | R4, R5, R6, R7, R8, R9, R19, R28 +1 |
| 1 | 1-0001546 | 1-0001546 | R10 |
| 2 | 1-0000009 | 1-0000009 | R11, R18 |
| 7 | 1-0000006 | 1-0000006 | R14, R15, R16, R17, R22, R25, R30 |
| 2 | 1-0000012 | 1-0000012 | R20, R21 |
| 2 | 1-0000013 | 1-0000013 | R23, R24 |
| 2 | 1-0000008 | 1-0000008 | R26, R27 |
NSSL EFM Motor Control design files
The KiCad project lives in the LeemanGeophysicalLLC/NSSL_EFM_Motor_Control_PCB repository on GitHub; these links point at the commit this page was built from.
NSSL EFM Motor Control: common questions
How big is the NSSL EFM Motor Control PCB?
The NSSL EFM Motor Control measures 65.9 × 45.7 mm, has 2 copper layers and is 2.446 mm thick.
How many components are on the NSSL EFM Motor Control?
81 components, from 38 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 NSSL EFM Motor Control design files?
From the LeemanGeophysicalLLC/NSSL_EFM_Motor_Control_PCB 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 NSSL EFM Motor Control design in my own project?
Yes, under the terms of its MIT license, which LeemanGeophysicalLLC chose for the repository.