Standard Triac BTA06-600B TO-220 6A 600V STM BTA06

BD137 Plastic Medium-Power Silicon NPN Transistors pack 5ps features:
Material: Silicon Polarity: N-P-N Encapsulated: TO 126 Audio amplifier, driver
VCBO collector-base voltage: 60V VCEO collector-emitter voltage: 60V VEBO emitter-base voltage: 5V Collector continuous current: 1.5A Typical gain of direct current. hfe: 40-160
Maximum power dissipation: 12.5 Watt if T <= 25ºC Working frequency: 250 MHz

Typical gain of direct current. hfe: 40-160

10x Linear Potentiometers 50k OHM kΩ features:
- Horizontal variable resistance PCB
- 50k Ohm kΩ Linear
- Quantity: 10 units

TDA2822M Dual DIP8 Stereo Audio Low Voltage Power Amplifier features:
- Package / Case: 8-DIP
- Voltage - Supply (Vs): 1.8V ~ 15V
- Quantity: 1 unit

Mosfet 24V 5A IRF520 PWM controller features:
- The IRF520 controller module can control the PWM signal from the Arduino module and adjust the DC voltage of So that we can control the speed of the DC motor, the brightness of the bulb, the LEDs, the heater.
- The built-in IRF520 N-MOSFET transistor
- Operating voltage: 3.3V -5V ( compatible with ARDUINO Raspberry PI)
- Charging voltage: 0-24V
- Charging current: up to 5A (more than 1A, the system must be equipped with a heat sink point)
- 60W max power (more than 10W must be equipped with a heat sink)
- Terminalblock connectors
- LED indicating the presence of power
- Dimensions: 33x24mm

It allows controlling up to 2 direct current motors or a bipolar stepper motor. It also allows to control a unipolar stepper motor configured as bipolar.
Ideal for projects with ARDUINO.
You can use it with PIC, AVR, STM32.
L298N Motor Drive Controller Board Module Dual H Bridge DC features:
- Minimum operating voltage: 5 V
- Maximum operating voltage: 35 V
- Maximum current: ± 2 A
- Logic voltage: 5V
- PWM signal inputs for speed control
- Outputs: for 2 DC motors or for a bipolar stepper motor
- Measures: 43x43x24 mm
Helpful Links:
Operation of the robot by Infrared / Operation of the robot by Bluetooth / Automatic operation with detection of obstacles

BD139 Plastic Medium-Power Silicon NPN Transistors pack 5ps features:
Material: Silicon Polarity: N-P-N Encapsulated: TO 126 Audio amplifier, driver
VCBO collector-base voltage: 60V VCEO collector-emitter voltage: 60V VEBO emitter-base voltage: 5V Collector continuous current: 1.5A Typical gain of direct current. hfe: 40-160
Maximum power dissipation: 12.5 Watt if T <= 25ºC Working frequency: 250 MHz

Typical gain of direct current. hfe: 40-160

Digispark is a development board based on the ATTINY85 microcontroller from ATMEL born in a successful campaign on Kickstarter.
Similar to the Arduino line , It is one of the smallest boards on the market.
Programmable directly from USB with the same Arduino tools. It has a built-in Micronucleus bootloader and can be replaced by similar ones such as the Trinket bootloader. Adafruit or others.
You can use many of the same Arduino libraries and you have your own on the digispark wiki. Arduino compatible Attiny85 Digispark board features:
- USB power supply
- External power supply (7v-35v DC 12v maximum recommended)
- 5V DC 500mA regulator on board
- Programmable with the Arduino IDE
- Loaded with Micronucleus bootloader

With this multiplexer circuit we will be able to get 8 more digital outputs for arduino losing only 3 of them.