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    Teensy 2.0 and DRV8835 motor controller board

    I am building a little robot using a Teensy 2.0 (because of its physical size) and a Pololu DRV8835 motor control board. I have encountered a problem which the folks at Pololu are having problems...
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    I m going to attach the 3.7 volt lipo via an...

    I m going to attach the 3.7 volt lipo via an Adfafruit module that adds lipo capability and provides a switch. I'm also trying to determine whether I can socket the Teensy. If I can, I'll remove it...
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    3.7 volts

    If a teensy 2.0 will run well on 3.7 volts, that'll solve many problems.
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    Perhaps I am using the incorrect term for the...

    Perhaps I am using the incorrect term for the board that I'm using. Let me explain what I am doing and you'll see why my remarks are not contradictory. I am building a robot (small, barely a robot,...
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    Just saw a problem. The sot 23 is surface mount....

    Just saw a problem. The sot 23 is surface mount. I will be using a protoboard. Hmmm...
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    Thanks. Do you have any SOT23 voltage regulators...

    Thanks. Do you have any SOT23 voltage regulators in the store?
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    Any suggestions for voltage reduction? As I said,...

    Any suggestions for voltage reduction? As I said, space is at a serious premium. I recall reading about placing an LED between the + and - from the rail and chip to reduce the voltage. Do you thik...
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    what voltage for a teensy 2.0

    Because of serious space constraints, I would like to use a Teensy 2.0 to control two motors and an IR receiver. The motors (and motor controller) need 6 volts. The Teensy 2.0 needs 5. How much...
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    Thanks. I'm looking forward to it.

    Thanks. I'm looking forward to it.
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    It was a while ago. At least I think I got it...

    It was a while ago. At least I think I got it from you. How do I program with it? Do you have a library?
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    Teensy 3.6 rtc question

    I'm just getting started with a 3.6. According to the product description, there is a connection for a rtc battery. I bought a battery holder from PRJC. Is it a simple matter of wiring the + to vBat...
  12. Thread: rtc

    by bps
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    rtc

    Teensy 3.1 & 3.2 have a spot for a crystal to activate an on board rtc. The 3.6 card merely mentions a connection for an external coin cell battery to activate the rtc. Does this mean that no crystal...
  13. schmelle2: Have you tried running this with...

    schmelle2: Have you tried running this with ARDUINO 1.0.6? I've been meaning to but I haven't yet. Maybe next week. I've encountered some problems moving from 1.0.6 to 1.6.4.
  14. I have encountered a related problem. I just...

    I have encountered a related problem. I just upgraded from 1.0.6 to 1.6.4. I am currently working with an Adafruit 320x480 3.5" TFT screen module. It works fine with both the graphicstest and...
  15. Thread: Display_ili9341

    by bps
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    Thank you once again. BTW, I am writing a book...

    Thank you once again. BTW, I am writing a book (KINDLE) about LCD screens and microcontrollers such as the Teensy. Would you or anyone else on this thread mind my mentioning the material on this...
  16. Thread: Display_ili9341

    by bps
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    It looks like R2 and R3 have little wires...

    It looks like R2 and R3 have little wires soldered across them. Is this correct or am I misreading things? This does the same thing as the wire connecting the reader and R1, right?
  17. Thread: Display_ili9341

    by bps
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    Once again, your advice is most welcome. I'll...

    Once again, your advice is most welcome. I'll give it a try and let you know how I make out. It'll take some time because I'll order that DigiKey removal kit.
  18. Thread: Display_ili9341

    by bps
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    Thanks for the tips. Never having worked with smd...

    Thanks for the tips. Never having worked with smd components before, how do you substitute resistors? What is a 0R? I see what you said about zero ohm resistors but the idea seems kind of odd to me....
  19. Thread: Display_ili9341

    by bps
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    Thanks for this HWGuy. I'll try this tomorrow....

    Thanks for this HWGuy. I'll try this tomorrow. There were no resistors mentioned on the web page. What are R1, R2, and R3 (what is 0R resistors?) and where do they go? It looks like one goes to the...
  20. Thread: Display_ili9341

    by bps
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    Paul suggested that I add a pinMode statement to...

    Paul suggested that I add a pinMode statement to check if there was any conflict with the CS line from the screen. I added one. It didn't help. He also suggested that I send a picture of my wiring. I...
  21. Thread: Display_ili9341

    by bps
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    No. The card failed to initialize.

    No. The card failed to initialize.
  22. Thread: Display_ili9341

    by bps
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    I have the ili9341 (from the store) connected to...

    I have the ili9341 (from the store) connected to a Teensy 3.1. I am using the optimized library. The sketches run successfully except for spitftbitmap. I have connected the CS pin on the SD reader...
  23. Thread: Display_ili9341

    by bps
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    Display_ili9341

    Hi,
    I'm trying to understand the ins and out of this board. I note that the web page that describes the board says that it is not recommended that the SD card reader be used. However, the page...
  24. Thread: coin cell

    by bps
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    OK. Thanks. The design that I have in mind will,...

    OK. Thanks. The design that I have in mind will, I think, circumvent at least the worst of the corrosion problem. I do not intend to leave the spike in the ground permanently. What I'm trying to...
  25. Thread: coin cell

    by bps
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    Thank you GremlinWrangler (a phrase I never...

    Thank you GremlinWrangler (a phrase I never thought I'd be saying ;)). Pictographer suggested using a single uninsulater wire (I guess attached to one of the analog pins?). Is this what you used?
  26. Thread: coin cell

    by bps
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    sleeping and speed

    As I mentioned, I am new with a Teensie so I'll ask what may be a simple question: how do I get it to sleep and how do I reset the clock?

    This is what I envision happening. Please note that this...
  27. Thread: coin cell

    by bps
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    coin cell

    I am new at using a Teensie although I have some experience with ARDUINOs, BS2s and Raspberry PIs. I want to make a small project using a Teensie in which size matters since I want the entire...
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