2 layers293.1 × 125.3 mm
2 layers
Maglev hardware
ussserrr/maglev-hardwareSchematic and PCB for maglev projects
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 17
- Nets
- 11
- Pads
- 38
- Tracks, vias
- 447, 0
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 1 Apr 2018
- Updated
- 7 Apr 2018
Overview
Maglev hardware is an open-source printed circuit board by ussserrr, from the ussserrr/maglev-hardware repository on GitHub. It is a 2-layer board with 17 parts on 11 nets, routed with 447 tracks and 0 vias.
It is built around the LM7805, BC237 and IRF640. Its parts include 7 resistors, 3 diodes, 2 capacitors, 2 transistors and 1 IC.
Main components
3
LM7805
TO-2630℃~+125℃ 1 1A 20V 2V 42uV 5V 62dB@(120Hz) 8mA Fixed Over Temperature Protection、Short Circuit Protection Positive TO-263 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSYONGYUTAIVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
BC237
TO-92-55℃~+150℃ 1 NPN 150MHz 15nA 350mW 45V 5A 6V 800mV 90 NPN TO-92 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)
IRF640
TO-220-3L-55℃~+150℃ 1 N-channel 1.3nF 120pF 180mΩ@10V 18A 200V 2W 400pF 4V N-Channel TO-220-3L MOSFETs ROHSGOODWORKMOSFETs
README
README.mdmaglev-hardware
KiCad schematic and PCB for maglev projects. See preview in *.pdf files.
Theory
In terms of control systems' general theory there're 4 main components: object under control; actuators and drivers; controller itself; feedback loop. Applied to this magnetic levitation system, these components are:
- Object: permanent magnet
- Driver: almost this schematic plus PWM
- Controller: PID algorithm executed by the MCU (see maglev-ti-rtos)
- Feedback: Hall sensor We specify setpoint (desired voltage depended on mutual arrangement of permanent and electro magnets) and get status of the process variable by Hall sensor (feedback value).
Notes
Due to lack of some hardware solutions (such as H-bridge) this version of the device can only push and release permanent magnet and can't pull it.
Parts
17| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 1k | Resistors_ThroughHole:Resistor_Horizontal_RM10mm | R1, R2, R3, R5, R6 |
| 2 | LED | Capacitors_ThroughHole:C_Rect_L4_W2.5_P2.5 | D1, D2 |
| 1 | 100u | Capacitors_ThroughHole:C_Radial_D5_L6_P2.5 | C1 |
| 1 | 10k | Resistors_ThroughHole:Resistor_Horizontal_RM10mm | R7 |
| 1 | 10u | Capacitors_ThroughHole:C_Radial_D5_L6_P2.5 | C2 |
| 1 | 1N4004 | Diodes_ThroughHole:Diode_DO-41_SOD81_Horizontal_RM10 | D3 |
| 1 | 430 | Resistors_ThroughHole:Resistor_Horizontal_RM10mm | R4 |
| 1 | A1302 | TO_SOT_Packages_THT:TO-220_Neutral123_Vertical | B1 |
| 1 | BC237 | TO_SOT_Packages_THT:TO-92_Molded_Wide_Oval | Q1 |
| 1 | COIL | Resistors_ThroughHole:Resistor_Vertical_RM5mm | L1 |
| 1 | IRF640 | TO_SOT_Packages_THT:TO-220_Neutral123_Vertical | Q2 |
| 1 | LM7805 | TO_SOT_Packages_THT:TO-220_Neutral123_Vertical | U1 |
Questions
What parts does the Maglev hardware use?
17 parts, built around the LM7805, BC237 and IRF640. 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 Maglev hardware KiCad files?
From the ussserrr/maglev-hardware repository on GitHub, at the commit this page was made from: the board is schematic.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Maglev hardware design in my own project?
Its repository states no licence, so its author keeps all rights: ask ussserrr before reusing the design.
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