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AF Motor Shield V1

afmotorv1clone.jpg

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 controls to the ICs and PWM outputs from the CPU connect to the driver enable inputs.

PWM

MotorMotor #ArduinoUNOMEGA2560
Servo 1 9 Timer1A PB1 Timer2B PH6
Servo 2 10 Timer1B PB2 Timer2A PB4
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

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

Shift register

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
74HCT595FunctionArduinoUNOMEGA2560
STCP STROBE D12 PB4 PB6
SHCP SHIFT D4 PD4 PG5
!OE ENABLE D7 PD7 PH4
DS DATA D8 PB0 PH5
QInputMotor #
0L293D IC2 1A 4
1L293D IC1 4A 2
2L293D IC1 1A 1
3L293D IC1 2A 1
4L293D IC1 3A 2
5L293D IC2 4A 3
6L293D IC2 2A 4
7L293D IC2 3A 3

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