Jean-Philippe_Rey

Most recent activity

• Math.round() doesn't follow specification for exact 0.5

  in JavaScript • 1 month

  

  I also think Math.round() does not behave as expected

  Math.round(1.3)
  =1
  >Math.round(1.4)
  =1
  >Math.round(1.5)
  =1
  >Math.round(1.6)
  =2
  >Math.round(1.0)
  =1
  

  Math.round(1.5) should return 2

• [SOLVED] ADS1x15 module is not really compatible with ADS1115

  @Jean-Philippe_Rey started

  • 5 comments
  • 314 views

  @Jean-Philippe_Rey replied
• [SOLVED] ADS1x15 module is not really compatible with ADS1115

  in Interfacing • 1 month

  

  Thank you very much, I must say that I didn't look so deep into other modules to check how optional parameters were handled.
  Anyway I just tested the new version of the ADS1X15 module and it works well with an ads1115. Thank you for your incredibly fast actions!

• [SOLVED] ADS1x15 module is not really compatible with ADS1115

  in Interfacing • 1 month

  

  Thank you @Gordon. I tried to implement this feature according to your recommendation and made a pull request here: https://github.com/espruino/EspruinoDocs­/pull/665

  However, when testing, I got this error

  Uncaught Error: Function "connect" not found!
   at line 96 col 26 in ADS1X15
  function ADS1X15(i2c,opts={part:"ads1015"}) {
                           ^
   at line 198 col 30
      ads = require("ADS1X15").connect(i2c,{part:"ad­s1115"});
                               ^
  in function "onInit" called from line 212 col 8
  onInit();
  

  It is most probably a very noob, basic javascript error. Could you help me figure out what's going wrong with the way I made the change?

• [SOLVED] ADS1x15 module is not really compatible with ADS1115

  in Interfacing • 1 month, 3 weeks

  

  I just made a few experiments with an Adafruit 1115 breakout board along with the module EspruinoDocs/devices/ADS1X15.js. I compared the datasheet of ADS1115 and ADS1015 and it appears that the datarate config (DR[2:0]) is not the same. Thus, the ADS1X15.js is only valid for ADS1015. As long as the ADC type cannot be discovered at runtime, it may be better to make 2 modules instead of one, but it means renaming the js file. I don't know @Gordon what would be the best way to go because renaming the current js module will break compatibility for those who currently use it.

  Any hint?

  Kind regards,

• Bangle2 just keeps rebooting after bath

  in Bangle.js • 1 month, 3 weeks

  

  You can try to leave the Bangle2 at sunlight behind a window for one day, the moisture will eventually evaporate. That is worth a try

• Gordon on holiday 20 Aug - 4 Sept

  in General • 3 months, 1 week

  

  Enjoy your holiday!

• BW Clock and hang

  in Bangle.js • 4 months

  

  I am not sure about that, but could it be that you are missing the file "weather.json" in the storage area?
  I see that the app is not meant to run without it

• I need advice for building a bandwidth-optimized link over BLE

  @Jean-Philippe_Rey started

  • 9 comments
  • 894 views

  @Gordon replied
• I need advice for building a bandwidth-optimized link over BLE

  in Puck.js, Pixl.js and MDBT42 • 5 months, 1 week

  

  Thanks everyone for your inputs!

  I'd advise this too. It's just super easy, and Espruino handles this more efficiently than a custom BLE service. If you're looking at x/y/z every 500ms bandwidth isn't going to be much of an issue for you at all though :)

  For one Puck.js it seems definitely to be the best way to go, however I would like to have let's say 5 or more Pucks running simultaneously, and 500ms is a minimum. I did not explain well what I was trying to do: I would like to build a 3d motion sensing platform, a bit like what they use in film-making for motion capture. I am unsure of the precision I will get but it is worth a try.

  At first I was thinking of using a Raspberry Pi as a central device, able to establish several connections simultaneously, but I would also love to try and evaluate the performance of an Espruino device as a central device, if the feature is being added to the firmware at a given time ;-)
  Currently, I think that the EspruinoHub (MQTT) could help me implementing the central device.