UAV Fan Driver
This is a motor driver for a UAV I've been working on for, well, forever. It has five fans, and each of the circuits pictured control one fan motor from a differential TTL input.
They're pretty simple; just an optoisolator driving a MOSFET. The large holes are for a nifty connector I found at a hobby store.
This is version three of the entire aircraft; version one never took off, and version two randomly rebooted because there was so much noise on the power bus. I've redesigned it so all the high-current stuff gets done a long way away from the microcontroller, right next to each motor.
I got the PCBs made up at BatchPCB, and the build quality is pretty good - the only defect I've found is on the mounting holes, which aren't quite plated properly (not that they need to be).
UAV Fan Driver
This is a motor driver for a UAV I've been working on for, well, forever. It has five fans, and each of the circuits pictured control one fan motor from a differential TTL input.
They're pretty simple; just an optoisolator driving a MOSFET. The large holes are for a nifty connector I found at a hobby store.
This is version three of the entire aircraft; version one never took off, and version two randomly rebooted because there was so much noise on the power bus. I've redesigned it so all the high-current stuff gets done a long way away from the microcontroller, right next to each motor.
I got the PCBs made up at BatchPCB, and the build quality is pretty good - the only defect I've found is on the mounting holes, which aren't quite plated properly (not that they need to be).