The PCA9685 with forward current configuration to driver up to 16 motors (with the help of Darlington arrays). For sale on Tindie.
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This board is part of Fyber Labs Flex Module project.
With the addition of common darlington arrays (ie. ULN2803A), it can provide up to 16 motor channels with limited circuit design. The updated design is now addressable. The PCA9685 is now in QFN packaging to provide space for the address solder bridges.
Any software related will be released under BSD or MIT license. SAAS or cloud based software will be AGPL.
With the new design with i2c solder bridge, we have lost some of the copper pours. It shouldn't matter, but there are a lot more close traces now.
We have narrowed the solder bridges in recent design to improve solderability.
Along with switching to 4.7k, we also fit in a solder bridge to make the i2c pull up resistors optional.
I have exposed the address pins as solder bridges that are hopefully big enough for hand soldering. In this rev I switched to QFN packaging to fit the added footprints. The castellation layout has been made compatible with other i2c boards.
Chris Hamilton
Piotr