motor shield address

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deanharvey
 
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motor shield address

Post by deanharvey »

I soldered a jumper across A4, leftmost bridge, on the motor shield. Is 0x76 the correct address? The motor isn't responding.

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adafruit_support_bill
 
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Re: motor shield address

Post by adafruit_support_bill »

2^4 is 0x10 plus the base address of 0x60 = 0x70.
https://learn.adafruit.com/adafruit-mot ... he-shields

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deanharvey
 
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Re: motor shield address

Post by deanharvey »

adafruit_support_bill wrote:2^4 is 0x10 plus the base address of 0x60 = 0x70.
https://learn.adafruit.com/adafruit-mot ... he-shields
isn't that the "all call" address of the motor shield? I'm using two motor shields, the first uses the default address.

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adafruit_support_bill
 
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Re: motor shield address

Post by adafruit_support_bill »

Yes. 0x70 is the all-call address for the pca9685, so you should select a different. one.

You can use the i2c scanner to verify what address the board is responding to: http://playground.arduino.cc/Main/I2cScanner

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