Changing color with color code #513

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1. kueblc commented on Sep 8, 2021

   

   kueblc

   on Sep 8, 2021

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   From what i can find on the internet the color is in HSV separating the values with a 0.

   Not quite, the zero is not a separator.

   What i can't seem to figure out is why my color code contains letters and what they mean.

   This is a hexadecimal representation of color. Two hexadecimal digits represent one byte, so the challenge is figuring out which byte controls which channel.

   I would send the bulb values with one byte set at a time and observe what it does, ie
   ff0000000000
00ff00000000
0000ff000000
   ... and so on.

   ❤️React with ❤️1Reacted by Tromp Hakvoort
2. duncte123 commented on Oct 18, 2021

   

   duncte123

   on Oct 18, 2021

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   I ran into the same issue, from my findings it seems that the 3e803e8 dictates the brightness and the colour/white sliders. The first 5 bits are for the colour.
3. f00stx commented on Nov 17, 2021

   

   f00stx

   on Nov 17, 2021

   Last edited by f00stx

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   The colour code can be (almost) directly decoded to an HSV color value, so if you know what color you'd like, you can also encode the correct color value (the resulting string is just the 3 segments of an HSV value, as hex, and then zero-padded):

   function hsv2tuya(hsv) {
       tuyaH = hsv['h'].toString(16).padStart(4, '0')
       tuyaS = (10 * hsv['s']).toString(16).padStart(4, '0')
       tuyaV = (10 * hsv['v']).toString(16).padStart(4, '0')
   
       return tuyaH + tuyaS + tuyaV
   }
   
   // Bright green, #00FF00
   hsv = {
       h: 120,
       s: 100,
       v: 100,
   }
   
   console.log(hsv2tuya(hsv)) // = 007803e803e8
   

   Setting dps['24'] to the resulting value (007803e803e8) does the trick on my device (an LED strip in the "Arlec GridConnect" family).

   ❤️React with ❤️2Reacted by Duncan Sterken and Tromp Hakvoort
4. tromphakvoort commented on Nov 30, 2021

   

   tromphakvoort

   on Nov 30, 2021

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   The colour code can be (almost) directly decoded to an HSV color value, so if you know what color you'd like, you can also encode the correct color value (the resulting string is just the 3 segments of an HSV value, as hex, and then zero-padded):

   function hsv2tuya(hsv) {
       tuyaH = hsv['h'].toString(16).padStart(4, '0')
       tuyaS = (10 * hsv['s']).toString(16).padStart(4, '0')
       tuyaV = (10 * hsv['v']).toString(16).padStart(4, '0')
   
       return tuyaH + tuyaS + tuyaV
   }
   
   // Bright green, #00FF00
   hsv = {
       h: 120,
       s: 100,
       v: 100,
   }
   
   console.log(hsv2tuya(hsv)) // = 007803e803e8
   

   Setting dps['24'] to the resulting value (007803e803e8) does the trick on my device (an LED strip in the "Arlec GridConnect" family).

   Did this in javascript but got a different result. My result is 0078640640 I'm new to binary and hexadecimal so I dont completely understand how you got your result and why mine is different.

   This is the code I used:

   function hsv2tuya(hsv) {
     tuyaH = hsv["h"].toString(16).padStart(4, "0");
     tuyaS = 10 * hsv["s"].toString(16).padStart(4, "0");
     tuyaV = 10 * hsv["v"].toString(16).padStart(4, "0");
   
     return tuyaH + tuyaS + tuyaV;
   }
   
   hsv = {
     h: 120,
     s: 100,
     v: 100
   };
   
   console.log(hsv2tuya(hsv));
5. codetheweb commented on Nov 30, 2021

   

   codetheweb

   on Nov 30, 2021

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   @tromphakvoort looks like you're missing the required parenthesis, i.e you're doing tuyaS = 10 * hsv["s"].toString(16).padStart(4, "0") instead of tuyaS = (10 * hsv['s']).toString(16).padStart(4, '0').

   Converting to a discussion.
6. Repository owner locked and limited conversation to collaborators on Nov 30, 2021
7. codetheweb

   closed this as completedon Nov 30, 2021