paul_tanner

Most recent activity

• Sending Floats over BLE

  @paul_tanner started

  • 2 comments
  • 2,499 views

  @Gordon replied
• Sending Floats over BLE

  in Puck.js, Pixl.js and MDBT42 • 6 years, 11 months

  

  [Related post](http://forum.espruino.com/conversations/306536/

  In my case my Puck is notifying a .js app of a change of a float32 value.
  I tried using print() but this converts a float32 into a ascii byte-string. This is sort of OK but rather messy for the app to have to convert back to a Float, not to mention potential loss of precision.

  Is there a way to send the float in its natural 4-byte form so that converting back to float32 can be easily done by the app?

  Thx.
  Paul

• Power management/ puck's button?/ getting started links

  @paul_tanner started

  • 10 comments
  • 4,628 views

  @paul_tanner replied
• Power management/ puck's button?/ getting started links

  in Puck.js, Pixl.js and MDBT42 • 8 years

  

  figure this out: putting the line in and then taking it out again cleared the problem. No rush to explain that as I am up and running.

• Power management/ puck's button?/ getting started links

  in Puck.js, Pixl.js and MDBT42 • 8 years

  

  Thx Gordon,

  Adding that pinMode line caused it to stop waking up altogether (ie ignoring the button).
  My puck is on 1v88. I will look for how to upgrade it.

• Power management/ puck's button?/ getting started links

  in Puck.js, Pixl.js and MDBT42 • 8 years, 1 month

  

  I think this is working OK. Is the advertising interval fixed at around 2 secs?

  setWatch(
    function() {
      NRF.wake();
      LED1.write(true);
      setTimeout(function() {
        LED1.write(false);
        setTimeout(function() {
          NRF.sleep();
        },60*1000); // 1 minute
      },50);
    },
    BTN,
    {
      edge:"rising",
      debounce: 50,
      repeat: true //??
    }
  );
  NRF.sleep();
  

  The button seems super-sensitive. I checked that the device is reassembled correctly. Picking it up appears to activate it.

• Power management/ puck's button?/ getting started links

  in Puck.js, Pixl.js and MDBT42 • 8 years, 1 month

  

  Thx Gordon,

  Those are the refs I needed. I'll post back here when I have tested code.

  BTW. The broken links are in the version that's in github. The ones on the puck-js website are OK.

  In terms of time for emails, I feel your pain :(

• Power management/ puck's button?/ getting started links

  in Puck.js, Pixl.js and MDBT42 • 8 years, 1 month

  

  I want to make a beacon that uses as little power (last as long) as possible.
  Since puck has a button I thought I might get it to wake up on that and go into lowest power mode after a set period of advertising.

  Looking at the links at the end of "Getting started". I was hoping to find some stuff about puck platform-specifics that would help me code up the above. As it is the links that looked useful are broken.

• HM-10 BLE Module - not working

  in Interfacing • 9 years, 4 months

  

  well done @lavamantis ;-) It would be extremely helpful if you could post a simple app sample to help people test the espruino when the HC-10 is attached. Thanks in advance.

  (If you wondering what this could be, a beacon is one obvious simple app)