Power for Projects and Systematic Fault-Finding

10 Lektionen in dieser Stufe

1. Power Budget: Adding Up What Every Part Draws
   Estimate average and peak current of a complete project. · Lab: Build a power budget table for the robot arm project and compare it with a measurement.
2. Linear Regulators, Dropout and Heat
   Calculate dissipation and decide when a linear regulator is acceptable. · Lab: Run a 7805 from 12 V at increasing load and feel and calculate the heat.
3. Buck and Boost Converter Modules
   Use switching converters to step voltage down or up efficiently and set their output safely. · Lab: Set a buck module to 5 V before connecting a load and measure efficiency at two currents.
4. Battery Chemistries and Lithium Cell Safety
   Compare alkaline, NiMH and Li-ion cells and follow the rules for handling lithium cells. · Lab: Read capacity, voltage range and maximum current from three cell datasheets and build a comparison chart.
5. Charging and Protecting a Li-Ion Cell with a TP4056 Module
   Explain constant-current and constant-voltage charging and the protection functions. · Lab: Charge a protected 18650 cell while logging voltage and observing the status LEDs.
6. Decoupling Capacitors, Brown-Outs and Random Resets
   Stabilise supply rails near chips and diagnose resets caused by voltage dips. · Lab: Cause resets with a motor on a weak supply and cure them with capacitors and wiring changes.
7. A Fault-Finding Method: Divide, Measure, Confirm
   Apply a repeatable procedure instead of random part swapping. · Lab: Find three planted faults in a prepared circuit and log each step.
8. Meter Techniques: Voltage Drop, Diode Test and Shunt Measurement
   Locate bad connections by voltage drop and measure current through a shunt. · Lab: Find a high-resistance jumper by measuring millivolts along the supply path.
9. Logic Analyzer Triggers and Timing Measurements
   Capture rare events with triggers and measure time between edges. · Lab: Trigger on a glitch and measure the latency from a button edge to an output change.
10. Moving from Breadboard to Perfboard
    Plan a layout, solder a permanent circuit and inspect and test it. · Lab: Build the power pack on perfboard from your own layout drawing.

Abschlussprojekt

A soldered portable power pack on perfboard with protected Li-ion cell, 5 V and 3.3 V rails and measured efficiency, plus a written fault report on a deliberately broken circuit.

Teile für diese Stufe

• 1 × UNO-compatible board
• 1 × USB cable matching the board
• 1 × Solderless breadboard 830 points
• 1 × Jumper wire set male-male and male-female
• 1 × Digital multimeter
• 1 × USB logic analyzer 8 channel
• 1 × Linear regulator 7805
• 1 × Linear regulator module 3.3 V
• 1 × Buck converter module adjustable
• 1 × Boost converter module 5 V output
• 1 × Li-ion cell 18650 protected
• 1 × 18650 battery holder
• 1 × TP4056 charger module with protection
• 10 × Ceramic capacitor 100 nanofarad
• 4 × Electrolytic capacitor 100 microfarad
• 1 × Power resistor assortment
• 1 × Shunt resistor 0.1 ohm
• 2 × Perfboard
• 1 × Slide switch
• 4 × Screw terminal block 2-pin
• 1 × Soldering iron with stand
• 1 × Solder wire
• 1 × Desoldering pump or wick
• 1 × Hook-up wire set
• 1 × Safety glasses

In jeder Lektion legst du die passenden Teile direkt in den Warenkorb. Arduino-kompatibel →