I have a rgb "holiday symphony" 600 led tree that I got for free but it has no remote which basically neuters the tree with just one color option and no music. The original remote is as 433.96 mhz rf remote. Here is the fcc link: https://fccid.io/2APJZ-PDT0093V.

The manufacturer is Polygroup and are absolutely no help. As they offer no replacements to the most easily lost part. All they gave me was the model number of the remote and said google it and good luck. Of course nobody is selling them. Anyways I provided pictures of the reciever motherboard along with the rgb controller daughter board.

My question is if there is anything I can do to program a new remote or add a manual button? I see that both the motherboard and daughter board have unpopulated "flash socket" connectors.

 

the IC2 is receiver SYN480R in SOP8 package. the output is pin5 and the data is transmitted serially which makes it easily hackable. basically you could inject own signal and bypass the whole RF alltogether. and Arduino or whatever you are comfortable with should allow you to experiment. since this only encodes few bits, small program that sends every code should easily reveal what codes are used.



but... you can buy on amazon same kind of sender and receiver modules individually or in pairs with the exact same frequency and only for few bucks.

example 10pcs receiver like on your board (see the same 480R chip and the exact same frequency of 6.7458MHz):




transmitters are using SYN115 chip which is what you would need to make own remote (transmitter chip uses different crystal but that is ok... chip is different too).


and if you read the datasheets for the two chips, you should find plenty of info.
here is one for sender SYN115:
https://www.rhydolabz.com/documents/33/SYN113-SYN115-datasheet-version-1-1-.0.pdf

happy new year and good luck.

 

I took a gander at the internal photos for the remote, but unfortunately the part numbers on neither IC were discernable.

 

sadly that is true. IC2 is obviously SYN115 but there is nothing on IC1.

 

the IC2 is receiver SYN480R in SOP8 package. the output is pin5 and the data is transmitted serially which makes it easily hackable. basically you could inject own signal and bypass the whole RF alltogether. and Arduino or whatever you are comfortable with should allow you to experiment. since this only encodes few bits, small program that sends every code should easily reveal what codes are used.
View attachment 284292


but... you can buy on amazon same kind of sender and receiver modules individually or in pairs with the exact same frequency and only for few bucks.

example 10pcs receiver like on your board (see the same 480R chip and the exact same frequency of 6.7458MHz):
View attachment 284290



transmitters are using SYN115 chip which is what you would need to make own remote (transmitter chip uses different crystal but that is ok... chip is different too).
View attachment 284291

and if you read the datasheets for the two chips, you should find plenty of info.
here is one for sender SYN115:
https://www.rhydolabz.com/documents/33/SYN113-SYN115-datasheet-version-1-1-.0.pdf

happy new year and good luck.

Thank you and happy new year to you as well! Very useful info. Would it be possible to take the current controllers out altogether and wire a different controller for the rgb leds currently in the tree? The leds aren't individually addressable type. There are 6 sections of them in the tree 24vdc. Any suggestions on a replacement controller? Of course there wouldn't be music but more concerned with the light.

 

when there is a will, there is a way