SPI, Shift Registers and Fast Peripherals

10 Lektionen in dieser Stufe

1. SPI Signals: Clock, MOSI, MISO and Chip Select
   Explain full-duplex shifting between controller and peripheral. · Lab: Loop MOSI back to MISO and verify that bytes sent are bytes received.
2. Clock Polarity, Phase and the Four SPI Modes
   Select mode, bit order and speed with SPISettings from a datasheet timing diagram. · Lab: Capture the same byte in mode 0 and mode 3 and point out the difference.
3. Output Expansion with a 74HC595 Shift Register
   Drive eight or more outputs from three pins and chain registers. · Lab: Run a 16-LED pattern through two chained registers.
4. Reading Many Switches with a 74HC165
   Load parallel inputs and shift them in serially. · Lab: Read eight buttons with three pins and print them as one byte.
5. LED Matrices and Scrolling Text with a MAX7219
   Control multiplexed LED matrices through a driver chip. · Lab: Scroll a message across two chained 8x8 modules with adjustable brightness.
6. Colour TFT Displays: Drawing Quickly over SPI
   Draw text and graphics in 16-bit colour and minimise redraw area. · Lab: Build a gauge that updates only the changed needle region.
7. Reading RFID Cards with an RC522 Module
   Read card identifiers from a 3.3 V SPI reader and compare them with a stored list. · Lab: Grant or deny access for two cards with LED feedback.
8. Sharing One SPI Bus Between Several Devices
   Manage chip-select lines and differing settings with transactions. · Lab: Run the TFT and RFID reader on the same bus without corrupted output.
9. Packet Radio with nRF24L01 Modules
   Send and acknowledge small packets between two boards and power the radio properly. · Lab: Transmit a button state and a sensor value across the room and count lost packets.
10. Addressable WS2812 LED Strips: Timing, Power and Data
    Drive a single-wire LED strip and size its power supply and protection parts. · Lab: Animate 30 LEDs with a status ring effect from a separate 5 V supply with capacitor and data resistor.

Abschlussprojekt

An RFID access terminal with colour TFT, LED-strip status ring and a wireless nRF24 remote indicator on a second board.

Teile für diese Stufe

• 2 × UNO-compatible board
• 2 × USB cable matching the board
• 2 × Solderless breadboard 830 points
• 1 × Jumper wire set male-male and male-female
• 1 × USB logic analyzer 8 channel
• 2 × Shift register 74HC595
• 1 × Shift register 74HC165
• 2 × MAX7219 LED matrix module 8x8
• 1 × TFT colour display 1.8 inch SPI
• 1 × RC522 RFID reader module with card and tag
• 2 × nRF24L01 radio module
• 2 × Adapter board with 3.3 V regulator for nRF24L01
• 1 × WS2812 addressable LED strip 30 LEDs
• 1 × External 5 V power supply 3 A
• 1 × Electrolytic capacitor 1000 microfarad
• 1 × Resistor 330 ohm
• 8 × LED 5 mm assorted
• 8 × Resistor 220 ohm
• 8 × Tactile push button
• 1 × Bidirectional logic level shifter module

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