Famicom RGB BLASTER

The RGB Blaster is a small adapter that adds plug and Play RGB+Audio output to your Famicom!
Zero lag output. Pixels stream flows synchronously with internal PPU.
Compatible with Genesis Mini DIN 9 cables (not icnluded).
Palette modifications support (use blastcfg to change the palette)

Limitations:

RGB Blaster is not fully compatible with all Famicoms and this problem may remain unresolved.
So far we know that device doesn't work well with consoles based on PPU RP2C02B and RP2C02D-0, supposedly the same situation with all older PPU revisions prior RP2C02D.
So might be good to check yours console before ordering.
Various PPU revisions listed here: https://www.nesdev.org/wiki/PPU_variants

RGB Blaster works only in pair with original NTSC PPU, any clones or modded systems will not work, unless it has very accurate PPU, clocked at stock NTSC frequency.

There is no composite video output, only RGB. Make sure your TV supports RGB via SCART input.

With regular carts sometimes you have to press reset after power on. The use of Flashcarts eliminates this problem.

It happens because some games begin to write to the PPU instantly after power on, while RGB Blaster hardware needs few more ms to wake up and be ready to work.