# TP-link light bulb re-programming

**URL:** <https://discourse.nodered.org/t/tp-link-light-bulb-re-programming/78994>\
**Category:** Share Your Projects\
**Created:** [6 June 2023 16:54 UTC](https://discourse.nodered.org/t/tp-link-light-bulb-re-programming/78994 "2023-06-06T16:54:06Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![gajjer](https://avatars.discourse-cdn.com/v4/letter/g/e47774/32.png) [@gajjer](https://discourse.nodered.org/u/gajjer)\
**Post date:** [6 June 2023 16:54 UTC](https://discourse.nodered.org/t/tp-link-light-bulb-re-programming/78994/1 "2023-06-06T16:54:06Z")

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I recently bought some TP-link smart light bulbs hoping to hack them to use Tasmota.  
Unfortunately, when I stripped it down the processor was an RTL8710 so I guess not compatible with Tasmota. I have managed to connect to the processor via some contacts identified as 3V3, Tx, Rx, Gnd and using a serial to USB convertor board.  
On power up the bulb squirts out the following

Initializing WIFI ...

WIFI initialized  
WIFI Mode No Need To Change: STA --\>STA  
[wifi\_set\_mode] WIFI Mode Change: STA--\>AP

Request ip over the range(1-128)

So that is encouraging, in that I can talk to the RTL8710. I'm hoping to be able to identify which I/O pin is used to do the pwm on the LEDs. Then I'm wondering if I can write some simple code to set the pwm value by writing to a node-red topic. I've done some code for ESP32-CAM boards where I can tell them to take a photo. I'm thinking something similar but to tell the RTL8710 a pwm value. Just very basic. I have added the RTL8710 to Arduino IDE but not tried to program it yet.  
I'm wondering if anyone has tried this approach or if there are any ideas out there.