I have K8057 and K8059. I made them and used for about half year and it worked pretty well. Then I stopped to use it for about 7-8months. Now I want to use it again but, receiver can’t catch my transmitter codes or transmitter won’t send codes. I deleted old codes and channels and created new ones ,also changed batteries (in case they don’t work anymore), but I still have same problem. How to fix it?
Sorry for bad english


Difficult to solve if you do not have the right equipment.
use a scope or multimeter and check if the PIC receives data from the receiver. This will help you determine if the transmitter is working or not.
As it worked before and now it does not, it is most likely a mechanical problem (unless you took the transmitter to e.g. a hospital, where there are strong magnetic fields).

I soldered the K8057 and K8059. How can I do so that I could control transmitter K8059 with receiver K8057? The LED on the K8059 light when you press the button, but the receiver does not respond … While I was an ordinary light bulb connected to the receiver, but then going to connect to the motor.

Please note: you control the receiver with the transmitter, not the other way round. There is no two-way communication.
In order to use your K8059 transmitter with the K8057 receiver, you need to ‘learn’ the K8059 to the K8057.
Please read the procedure in the manual.
If it does not work, it is most likely due to one or more assembly problems.
Sorry, this forum does not allow picture uploads
If you can provide LINKS (e.g. by using a free online picture base) to HI-RES and SHARP pics of your assembly (both solder- and component side)
then we can take a look and provide some feedback.

Thank you for your answer, but … At what instructions I can read about setting and communications with K8057?

Please check the user manual: