Circuit Design for Motor Control
Thought
Work completed
- Gathered key LM2596 parameters (datasheet URL, input voltage max, output voltage max, max current)
- Placed U1, U2, U3, U4 according to T-shape requirements
- Separated high-current and sensitive returns in layout
- Routed power: LM2596 5 V → VSYS and VMOT, commons GND
- Routed control signals from Pico to TB6612FNG and I2C signals to MPU-6050
- Added all pull-ups (4.7 kΩ) and decoupling caps (100 nF)
- Connected all nets per plan and added generic SS14 diode
Tasks not yet addressed
- Research motor voltage range and stall current (steps 0.7.1–0.7.4)
- Add LM2596 input voltage minimum and input current properties (steps 0.8)
- Decide TB6612FNG orientation and update board outline (step 0.9)
- Run pull_up_pull_down ERC and capacitor_voltage_rating/resistor_power_rating ERC (steps 5.3–5.4)
- Define and draw T-shaped board outline (steps 6.1–6.3)
Unable to perform
- Datasheet queries for LM2596 minimum input voltage, input voltage max property, output current and max output current (steps 0.2, 0.5, 0.6.1–0.6.2)
- Full ERC review for schematic completeness (step 5.1)
Success criteria status
- Power routing and isolation: ✅
- Signal wiring with pull-ups: ✅
- T-shape outline and dimension check: ❌ (outline not set)
- Schematic/layout readiness for detailed routing: ❌ (ERC and outline pending)
Recommended next step
Proceed with schematic review: run the pull_up_pull_down and voltage/power-rating ERC checks, address flagged parts, then define the T-shaped board outline (≤ 120 mm×40 mm) before detailed layout.
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