• Following 0 users
  • Followed by 0 users
  • Votes 0
  • Subscriptions 2

Activity overview

Latest activity by alk
  • alk commented,

    Yes, I've done so and there is again no change in the waveforms. I guess this means that the internal pull-ups on the display's pic16f690 are enabled. I've tried lower termination resistances as we...

  • alk commented,

    No, these are the only two devices on the bus.The bus waveforms for the case of a single display is almost identical to the case with two displays. I did, however, notice a small difference today. ...

  • alk commented,

    Both displays are powered by a single 5V rail. My control board has 3.3v outputs connected to a bi-directional level shifter with 10kOhm pullups

  • alk created a post,

    2x NHD-0420D3Z I2C Problem

    Hello,I've used these displays in the past with success, and now I'm using two of them in parallel on the I2C bus and I can't figure out what's wrong. Each of the two displays has been assigned its...

  • alk commented,

    Haha oh wow I feel silly. I did initially note that this command needed a longer delay. When I went back to check my code it turns out I was only delaying for about 2 ms given the clock rate of my ...

  • alk created a post,

    Changing the Slave Address with NHD-0420D3Z!

    Hello, I am working on a project in which I run two of the specified character LCD displays on a single I2C bus as slaves. The master/controller in this scenario is a KL25z Freedom Platform. I've b...