[tanglo]

Try to replace the code in the controlblockconfig.cfg with this:

{
	"input" : {
		"gamepadtype" : "snes"
	
},
	"powerswitch" : {
		"activated" : true
	}

}

Did You config the emulator?

For the NES emulator, edit this file: /opt/retropie/configs/nes/retroarch.cfg

Mine looks like this:

# All settings made here will override the global settings for the current emulator core

video_shader = /opt/retropie/emulators/retroarch/shader/phosphor.glslp
video_shader_enable = false
video_smooth = false

input_player1_joypad_index = "0"
input_player1_b_btn = "3"
input_player1_select_btn = "6"
input_player1_start_btn = "7"
input_player1_up_axis = "-1"
input_player1_down_axis = "+1"
input_player1_left_axis = "-0"
input_player1_right_axis = "+0"
input_player1_a_btn = "1"

input_player2_joypad_index = "1"
input_player2_b_btn = "3"
input_player2_select_btn = "6"
input_player2_start_btn = "7"
input_player2_up_axis = "-1"
input_player2_down_axis = "+1"
input_player2_left_axis = "-0"
input_player2_right_axis = "+0"
input_player2_a_btn = "1"

input_enable_hotkey_btn = "6"
input_exit_emulator_btn = "7"

You do not need snesdev.

[tanglo]

Solved.

The USB port on the CB is defective.
Soldered a cable to the 5V connection on the CB.

Now everything is working fine.

[tanglo]

– The power switch is a toggle switch
– I can not turn it on with the button. Only off.
– The only way I am able to turn the Rpi on, is by connecting a power supply to the – Rpi itself.
– Tried using a single power supply connected to the CB, nothing happened. That’s why I started using two.

Installation commands gives the expected results.

{
	"input" : {
		"gamepadtype" : "snes"
	
},
	"powerswitch" : {
		"activated" : true
	}

}

Attached a picture of the connections

[Author]

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