====AF Motor Shield V1====

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{{interfaces:mabuchi.jpg?200}} \\ \\
{{interfaces:afmotorv1clone.jpg?100}} {{interfaces:sg90servo.png?100}}
</wrap>

No longer in production but available as various clones, this board can
drive two 5V servos and up to 4 motors attached to two L293D driver ICs.

A shift register is used to provide the direction inputs to the ICs and PWM outputs from the CPU connect to the driver enable inputs to control the motor power (speed).
===PWM====

^Motor^Motor #^Arduino^UNO^MEGA2560^
|Servo           | 1 |10 | Timer1B PB2 | Timer2A PB4 |
|Servo           | 2 | 9 | Timer1A PB1 | Timer2B PH6 |
|L293D IC1 1,2EN | 1 |11 | Timer2A PB3 | Timer1A PB5 |
|L293D IC1 3,4EN | 2 | 3 | Timer2B PD3 | Timer3C PE5 |
|L293D IC2 3,4EN | 3 | 6 | Timer0A PD6 | Timer4A PH3 |
|L293D IC2 1,2EN | 4 | 5 | Timer0B PD5 | Timer3A PE3 |

===L293D===

<code>
1,2EN 1-----16 VCC1
1A    2     15 4A
1Y    3     14 4Y
GND   4     13 GND
GND   5     12 GND
2Y    6     11 3Y
2A    7     10 3A
VCC2  8-----9  3,4EN
</code>



===Shift register===

<code>
Q1   1-------16 VCC
Q2   2       15 Q0
Q3   3       14 DS
Q4   4       13 !OE
Q5   5       12 STCP
Q6   6       11 SHCP
Q7   7       10 !MR
GND  8-------9  Q7S
</code>

^74HCT595^Function^Arduino^UNO^MEGA2560^
|STCP |STORAGE CLOCK |D12 |PB4| PB6|
|SHCP |SHIFT CLOCK  |D4  |PD4| PG5|
|!OE  |O/P ENABLE  |D7  |PD7| PH4|
|DS   |DATA    |D8  |PB0| PH5|

^Q^Input^Motor #^
|0|L293D IC2 1A | 4 |
|1|L293D IC1 4A | 2 |
|2|L293D IC1 1A | 1 |
|3|L293D IC1 2A | 1 |
|4|L293D IC1 3A | 2 |
|5|L293D IC2 4A | 3 |
|6|L293D IC2 2A | 4 |
|7|L293D IC2 3A | 3 |


===Resources===

[[https://learn.adafruit.com/adafruit-motor-shield|Product page]]

[[https://cdn-learn.adafruit.com/downloads/pdf/adafruit-motor-shield.pdf|User manual]]

[[https://cdn-learn.adafruit.com/assets/assets/000/009/769/original/mshieldv1-schem.png|Schematic]]

[[https://assets.nexperia.com/documents/data-sheet/74HC_HCT595.pdf|74HCT595 Data-sheet]]

[[https://www.ti.com/product/L293D|L293D product page]]

[[https://en.wikipedia.org/wiki/Servo_control|Servo control]]