If you want to connect your Recalbox to a CRT monitor, you will need a mini-jack to RCA cable like this one:
On camcorder cables, the video output could be on the right (red) audio socket.
Moreover, as the type of cable needed is not really widespread, it is better to test with a multimeter that the cable used corresponds to the diagram proposed above (an inversion of the ground and video on the jack leads to a jumpy black & white image, sign of an unsuitable cable).
¶ Configuration
¶ config.txt file
This file is replaced at each update. You will need to do the manipulations in this file each time!
- Modify the file config.txt by finding the following line (there are 2, choose the one for your board):
dtoverlay=vc4-kms-v3d,cma-512
And replace with this:
dtoverlay=vc4-kms-v3d,composite=1
- Find the next line and comment on it by putting a ‘#’ in front of it, like this:
#hdmi_enable_4kp60=1
¶ recalbox-user-config.txt file
- Edit the file recalbox-user-config.txt by commenting out all lines starting with
hdmi_with the#symbol, and adding the supportedsdtv_mode(one line only from the followings):
sdtv_mode=0 # Normal NTSC
sdtv_mode=1 # Japanese version of NTSC – no pedesta
sdtv_mode=2 # Normal PAL
sdtv_mode=3 # Brazilian version of PAL – 525/60 rather than 625/50, different subcarrier
- To get better sound from the composite output, enable the experimental audio driver for the Raspberry Pi :
audio_pwm_mode=2
- This mode can create a global slowdown of Recalbox. If this is the case, switch the line to comment and force the audio output to the jack:
#audio_pwm_mode=2
hdmi_drive=1
- Finally, add
hdmi_ignore_hotplug=1to force composite. Your recalbox-user-config.txt file should look like this:
sdtv_mode=2
hdmi_ignore_hotplug=1
audio_pwm_mode=2
¶ Everything is slow with composite mode
The audio_pwm_mode=2 improves the sound but can slow down the system in composite mode, especially on Pi zero. In this case, use the following mode:
audio_pwm_mode=0