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Type: Posts; User: ChrisBaron

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    17A is a lot for 16AWG wire. Just saying. You...

    17A is a lot for 16AWG wire. Just saying.

    You need a level shifter to convert from 3.3V to 5V. The Octo has a good example. Look at how that circuit works and use 2x of those chips to get 16...
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    The Octo adapter page has some comments on...

    The Octo adapter page has some comments on numbers of LEDs that can be controlled.

    https://www.pjrc.com/store/octo28_adaptor.html

    Since the Octo library uses DMA I think you can get 8x strips...
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    Well if you used the segmented approach you could...

    Well if you used the segmented approach you could have a master node on the CANbus network and say 10x Teensy 3.2s controlling 600 LEDs each in 8x strings of 75 LEDs - or however you wanted to break...
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    I would probably approach it with multiple Octos...

    I would probably approach it with multiple Octos and CANbus between the Teensy3.2 units. That lets you work it in chunks and then add/subtract more 8x blocks as needed. I tend to use a lot more of...
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    Not a RasPi guy. However, I did research this a...

    Not a RasPi guy. However, I did research this a while back and figured I could get a minimal system to boot <10S. I think the system is called "buildroot". It basically compresses a stripped full...
  6. The regulator has internal temp protection. I...

    The regulator has internal temp protection. I think Paul is saying if it gets really really hot under use it might just decide to shut down on you at random points. 160C is too hot to touch so you...
  7. Arduino has a cloud editor/compiler. Haven't...

    Arduino has a cloud editor/compiler. Haven't used it. Might be worth exploring.
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    What about a RasPi Zero running an HDMI display...

    What about a RasPi Zero running an HDMI display with a CANbus adapter hat? Lots of choices then...
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    Here is what I did to get complimentary output on...

    Here is what I did to get complimentary output on 2 channels of FTM2. It doesn't use the full capability of the timer but it works and is simple.



    /*
    * Test complimentary PWM on FTM2 CH0/CH1...
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    I find these chips generally to be terrible. ...

    I find these chips generally to be terrible. Adafruit and Sparkfun have not done the world a favor by promoting them so heavily.

    Get yourself a uni-directional level-shifter like a 74LVC2T45 or...
  11. Just a quick theory note. Current is what you...

    Just a quick theory note. Current is what you want for speed and power. The solenoid is just a coil of wire so there are not voltage "limits" like with semiconductors. You can push 100V through a...
  12. Save yourself piles of pain and use a proper...

    Save yourself piles of pain and use a proper solenoid driver chip for this. There are some in DIP packages but you can get them nice and small with SMD packages too. TI has some really nice ones...
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    The programming manual for the chip actually...

    The programming manual for the chip actually breaks this down pretty well. It has a bunch of cases such as this and tells you to set this bit in this register and that bit in this other one step by...
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    CANbus is nice because there really aren't...

    CANbus is nice because there really aren't addresses or "senders" and "receivers" as such. All nodes can transmit whenever they feel like it and all nodes can listen and/or ignore - in hardware -...
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    Hmmm. I don't have this still connected up. I...

    Hmmm. I don't have this still connected up. I know it worked properly with that code.

    Also, I remember now that I was using the Teensy 2.0++ CPU with the AMT233. So there may be some...
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    Are you doing 5V I/O for this? It needs 5V power...

    Are you doing 5V I/O for this? It needs 5V power and 5V SPI levels.
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    Here you go. I know this could be cleaned up and...

    Here you go. I know this could be cleaned up and a bunch of stuff combined but I do it this way so I can see each step during debugging and then clean up if I care later.



    //...
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    AMT-200 series Absolute Encoder interfacing

    OK. 4-year later reply to this thread... But this came up on Google for AMT encoders.

    A couple of things to note:

    1) From the datasheet these AMT-203/233 sensors are 1MHz SPI, 2MHz max. So...
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