====== Experimental shield ======

{{:courses:be2m37mam:hardware:funduino.png?400|}}


===== 1. Socket for Bluetooth APC220 module =====

Description (from the top to the bottom):
    7 – not used
    6 – not used
    5 – pin 0
    4 – pin 1
    3 – not used
    2 – +5 V
    1 – GND
===== 2. LED display driven by 74HC595 =====

Datasheet 74HC595 is [[|here]].

Workflow:
    Write to Latch – PB5, LOW - begin of write, HIGH - end of write
    Clock pulse – PA8
    Serial data – PA9 – 2× 8 bits (2× Byte)

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''1st Byte'' – segment data – LOW - LED segment in on,  HIGH - LED segment is off

''2nd Byte'' - display address (from the left):
    1. – ××××0001
    2. – ××××0010
    3. – ××××0100
    4. – ××××1000
 
Serial data order: from MSB (most significant bit) 

===== 3. Reset =====

Nucleo (Arduino) reset.

===== 4. LEDs =====


LOW - LED is on, HIGH - LED is off
LED description (from the top to bottom)
    LED D1 – PA5
    LED D2 – PA6
    LED D3 – PA7
    LED D4 – PB6

===== 5. Buzzer =====

===== 6. Jumper =====

Connects PullUp rezistor of 10 kΩ to pin PA4 (2nd pin of 7b socket)

===== 7. Socket for IR (7a) and temperature senzor (7b) =====

7a (from the left)
    1 – pin 2
    2 – GND
    3 –  +5 V

7b (from the left) Sensors: Dallas 18B20 or LM35
    1 – GND
    2 – PA4
    3 – +5 V

===== 8. Potentiometer =====

Potentiometer with resistance of 10 kΩ between +5 V and GND, driver connected to PA0

===== 9. Jumper =====

Connects PullUp resistors (10 kΩ) to buttons S1, S2 a S3 (see 11)

===== 10. Universal socket (sonar HCSR04, servo…) =====

Description (from the left)
    1st column – GND (all 4 pins)
    2ns column – +5 V (all 4 pins)
    3rd column (from the top) – pin 5, pin 6, pin 9 and pin A5

===== 11. Buttons =====

    LOW on the input pin when pressed
    one may connect PullUps (see 9)

Description (from the left)
    Button S1 – PA1
    Button S2 – PA4
    Button S3 – PB0

===== Shield schematic =====

{{:courses:be2m37mam:hardware:funduino-schematic.png?400|}}