Problem with RepRap Discount smart lcd?

[siblues]

I am using the 12864 smart lcd on a MKS v1.3.I am new to all of this and have never had to set up a printer controller.I am just trying to get the panel working before I start trying to set up the board for use.I am using a usb to power up the board and panel/lcd.I do not know if it needs to be powered by a psu in order for the panel/lcd to function properly.Here is my config setup so far I only changed the leveling and panel sections and added a custom menu.The LCD powers on but does not display any text it is blank.The knob/encoder beeps when it is pressed bu the screen is blank.

My config

Z-probe

See http://smoothieware.org/zprobe

zprobe.enable false # Set to true to enable a zprobe zprobe.probe_pin 1.28!^ # Pin probe is attached to, if NC remove the ! zprobe.slow_feedrate 5 # Mm/sec probe feed rate

zprobe.debounce_count 100 # Set if noisy

zprobe.fast_feedrate 100 # Move feedrate mm/sec zprobe.probe_height 5 # How much above bed to start probe

gamma_min_endstop nc # Normally 1.28. Change to nc to prevent conflict,

Levelling strategy

Example for rectangular grid levelling strategy, see wiki documentation for other strategies

leveling-strategy.rectangular-grid.enable true # The strategy must be enabled in the config, as well as the zprobe module. leveling-strategy.rectangular-grid.x_size 75 # size of bed in the X axis leveling-strategy.rectangular-grid.y_size 50 # size of bed in the Y axis leveling-strategy.rectangular-grid.size 7 # The size of the grid, for example, 7 causes a 7x7 grid with 49 points.

Must be an odd number.

leveling-strategy.rectangular-grid.do_home true
leveling-strategy.rectangular-grid.probe_offsets 0,0,0 # Optional probe offsets from the nozzle or tool head leveling-strategy.rectangular-grid.save false # If the saved grid is to be loaded on boot then this must be set to true leveling-strategy.rectangular-grid.initial_height 10 # will move to Z10 before the first probe leveling-strategy.rectangular-grid.dampening_start 0.5 # compansation decrease point (optional) leveling-strategy.rectangular-grid.height_limit 1 # no compensation to apply after this point (optional) mm_per_line_segment 1 # necessary for cartesians using rectangular-grid

Panel

See http://smoothieware.org/panel

Please find your panel on the wiki and copy/paste the right configuration here

panel.enable true # Set to true to enable the panel code

Example for reprap discount GLCD

on glcd EXP1 is to left and EXP2 is to right, pin 1 is bottom left, pin 2 is top left etc.

+5v is EXP1 pin 10, Gnd is EXP1 pin 9

Panel settings

panel.enable true # set to true to enable the panel code panel.lcd reprap_discount_glcd # set type of panel panel.spi_channel 0 # spi channel to use ; GLCD EXP1 Pins 3,5 (MOSI, SCLK) panel.spi_cs_pin 0.16 # spi chip select ; GLCD EXP1 Pin 4 panel.encoder_a_pin 3.26!^ # encoder pin ; GLCD EXP2 Pin 3 panel.encoder_b_pin 3.25!^ # encoder pin ; GLCD EXP2 Pin 5 panel.click_button_pin 1.30!^ # click button ; GLCD EXP1 Pin 2 panel.buzz_pin 1.31 # pin for buzzer ; GLCD EXP1 Pin 1 panel.back_button_pin 2.11!^ # 2.11 menu back ; GLCD EXP2 Pin 8

setup for external sd card on the GLCD which uses the onboard sdcard SPI port

panel.external_sd true # set to true if there is an extrernal sdcard on the panel panel.external_sd.spi_channel 1 # set spi channel the sdcard is on panel.external_sd.spi_cs_pin 0.28 # set spi chip select for the sdcard (or any spare pin) panel.external_sd.sdcd_pin 0.27!^ # sd detect signal (set to nc if no sdcard detect) (or any spare pin)

panel.menu_offset 0 # Some panels will need 1 here

panel.alpha_jog_feedrate 6000 # X jogging feedrate in mm/min panel.beta_jog_feedrate 6000 # Y jogging feedrate in mm/min panel.gamma_jog_feedrate 200 # Z jogging feedrate in mm/min

panel.hotend_temperature 185 # Temp to set hotend when preheat is selected panel.bed_temperature 60 # Temp to set bed when preheat is selected

Custom menus : Example of a custom menu entry, which will show up in the Custom entry.

NOTE _ gets converted to space in the menu and commands, | is used to separate multiple commands

custom_menu.power_on.enable true # custom_menu.power_on.name Power_on # custom_menu.power_on.command M80 #

custom_menu.power_off.enable true # custom_menu.power_off.name Power_off # custom_menu.power_off.command M81 #

custom_menu.filament_change_c.enable true # custom_menu.filament_change_c.name Change Filament # custom_menu.filament_change_c.command G91|G1_Z0.6_F12000|G90|G1_X0_Y0|G91|G1_Z-0.6|G90|M25 #

custom_menu.filament_change_r.enable true # custom_menu.filament_change_r.name Resume # custom_menu.filament_change_r.command M24 #``

[pixel3design-hub]

don't know if it's your case, but AFAIK the two EXP1 & EXP2 have been placed turned 180°CW on MKS boards. EXP Connectors

As you can see the arrow pointing down on the left side, indicates the pin 1 of the connector. In the other photo you see clearly the square pad that's indicating the pin 1. The connector is turned by 180°. Your cables are marked on one side with a (normally) red line, which indicates the pin 1 of the ribbon cable.

The easiest approach for noobies is to grind the tab on the cable connectors to be able to put them in without recrimp everything.

Hope this would help.

Cheers

[siblues]

``Thanks but mine are already flipped.I figured out the problem anyway the contrast on the LCD was really bad and the potentiometer wasn't enough to fix it.The pot on the bottom of the actual LCD that is sandwiched between the pcb and LCD needs to be adjusted but I can't get to it.You can also pry the plastic housings off the pins and flip them around then press them back onto the pins.

[makerbase-mks]

@siblues EXP1 should be connect to EXP1, EXP2 should be connect to EXP2.

[waran14]

@siblues did you have to still flip the EXP 1, 2 connectors on the MKS SBASE board ? Also, did you make any other change to the config file ?

[siblues]

I just flipped them on the back of the lcd and selected the glcd in the config. I gave up on that lcd and am currently using the 3.2 TFT

[waran14]

EDIT: ISSUE RESOLVED followed @pixel3design-hub instructions. used a dremel to sand down the tab and invert the ribbon cables such that the red wire is facing the motor pins ( or aligned to the square pin that is found on the bottom side)

Now the LCD is powering up correctly. thanks everyone.

added panel.encoder_resolution to help with encoder steps

SD card still not being detected

---

alright. I tried swapping the cables and connector. The LCD is not even powering on. but the encoder wheel seems to do something. I am not sure at this point if this is related to pins on the LCD itself. But you mentioned something about the contrast not set correctly. how were you able to pry open the LCD without bending or breaking the pins soldered to the pcb ?

[siblues]

I broke one lcd and decided to just go with the TFT.

[pixel3design-hub]

OMG... Not not not. Is swapped pinwise, not connector wise... JC...

[waran14]

@pixel3design-hub Is your SD card slot being read correctly ? I am having issues with my SD card being read. I tried 2 different cards. On the LCD menu, I have 2 options

1. EXT and 2. SD. So, am guessing firmware is doing okay

[Filcanna]

THIS WORKED FOR ME TO MAKE LCD RECOGNIZED BY THE BOARD :D :D

Example for reprap discount GLCD

on glcd EXP1 is to left and EXP2 is to right, pin 1 is bottom left, pin 2 is top left etc.

+5v is EXP1 pin 10, Gnd is EXP1 pin 9

panel.spi_frequency 400000
panel.lcd reprap_discount_glcd #st7565_glcd # panel.spi_channel 0 # SPI channel to use ; GLCD EXP1 Pins 3,5 (MOSI, SCLK) panel.spi_cs_pin 0.16 # SPI chip select ; GLCD EXP1 Pin 4 panel.encoder_a_pin 3.25! # Encoder pin ; GLCD EXP2 Pin 3 panel.encoder_b_pin 3.26! # Encoder pin ; GLCD EXP2 Pin 5 panel.click_button_pin 1.30!^ # Click button ; GLCD EXP1 Pin 2 panel.buzz_pin 1.31 # Pin for buzzer ; GLCD EXP1 Pin 1 panel.back_button_pin 2.11!^ # Back button ; GLCD EXP2 Pin 8 panel.encoder_resolution 4 panel.menu_offset 0 # Some panels will need 1 here

panel.external_sd.spi_channel 0

panel.external_sd.spi_cs_pin 2.8

panel.external_sd.sdcd_pin 2.13!^

Note: spi clock frequency explicitly declared (on LPC1768 system clock is 96 MHz, in Smoothieboard LPC1769 is 120 MHz so I proportionally adapted SPI clock); ^ character removed from encoder pins setting (CW rotation moves menu down); resolution of encoder set to 4; my try to have an external SD card was aborted :(