nanoDLP

eB3rlin

Member

Registered: 2020-04-17

Posts: 7

No Option: Display Communication Type -> HDMI Power On/Off

Hallo,

iam building the SLA DLP printer from the thingiverse project TOS (thing:2749678).
I want to connect the LCD screen, but  the screen stays black. (I have tested the LCD screen on anothe device and it works)

Maybe its the configuring iam missing. The NanoDLP webinterface didnt show the option "Display Communication Type -> HDMI Power On/Off".
Any idea why ?

best regards
eB3rlin

bigfilsing

Member

Registered: 2016-11-20

Posts: 306

Re: No Option: Display Communication Type -> HDMI Power On/Off

In the root directory of your Raspi SD card there's a config file that has to be configured to suit your particular screen. its simply called "config.txt"

Example :- Heres mine from my KLD1260 ( Different screens need different settings in this file )
---------------------------------------------------------------------------------------------------------------------

# uncomment the following to adjust overscan. Use positive numbers if console
# goes off screen, and negative if there is too much border
#overscan_left=16
#overscan_right=16
#overscan_top=16
#overscan_bottom=16

//hdmi_timings=<h_active_pixels> <h_sync_polarity <h_front_porch> <h_sync_pulse> <h_back_porch> <v_active_lines> <v_sync_polarity> <v_front_porch> <v_sync_pulse> <v_back_porch> <v_sync_offset_a> <v_sync_offset_b> <pixel_rep> <frame_rate> <interlaced> <pixel_freq> <aspect_ratio>

# DISPLAY SETTINGS
gpu_mem=128
hdmi_force_hotplug=1
hdmi_timings=1440 0 50 10 35 2560 0 4 2 2 0 0 0 50 0 198000000 0
hdmi_group=2
hdmi_mode=87
hdmi_pixel_freq_limit=500000000
hvs_priority=0x32ff
max_framebuffer_width=1440
max_framebuffer_height=2560
framebuffer_width=1440
framebuffer_height=2560
framebuffer_depth=24
framebuffer_ignore_alpha=1
config_hdmi_boost=2
dtparam=i2c_arm=on
display_rotate=0
-------------------------------------------------------------------------------------------------------------------------------
Hope this helps
Good luck

Last edited by bigfilsing (2020-04-19 11:01:54)

eB3rlin

Member

Registered: 2020-04-17

Posts: 7

Re: No Option: Display Communication Type -> HDMI Power On/Off

Hey, this works great.
Thank you