lcd panel connector pinout in stock

This one is certainly a USB device - most of modern laptop touchscreens are - so most of the laptop webcam reuse tips will apply. I need to find VCC, D+, D- and GND. There"s 4 pins on the connector, so I don"t have to worry about pins like EN and RST being present - they are on some touchscreens, but not this one.

The connector receptacle isn"t something that I have a plug for when looking through my collection of random wire ends. This means I have to solder to the touchscreen board, sadly.

I didn"t have 1 and 2, so I had to resort to 3. Asus X200CA doesn"t have schematics available but there"s boardview files. With OpenBoardView and the FZ key, I was able to open the boardview file and browse it. Now, where do I find the touchscreen connector?

Sometimes the touchscreen cable is a separate cable, and sometimes it"s the same cable that also carries the display signals, and I need to know this to know which connector to look for touchscreen signals on. I looked up "x200ca cable" on eBay and found this:

Looks like exactly the cable we need, one connector (right) is the kind of connector that plugs into our touchscreen controller board, and another one (left) is a Molex connector often used in laptops. So, the touchscreen has a separate connector. I could look up an "Asus X200CA teardown" video on YouTube and see exactly where that wire goes, but I saved a bit of time by googling "X200CA motherboard" and looking at images:

The pinout, however, has to be determined. I usually take a multimeter, find GND, then VCC, then USB D+ and D- - as the latter are hard to tell apart, I try them in one polarity and swap them if they don"t work.

GND is likely to be at the screw hole - checking with a multimeter, there"s indeed connectivity between one of the pins on the 4-pin connector and the metal around the screw hole. It also is connected to all of the capacitors on the board, so that cements it, we found GND. I won"t solder a wire to the screw hole itself, but instead to one of the other GND points on the board.

VCC is very prominent on this board, it"s a thick trace going somewhere to the right from the connector. Even the connector"s mechanical pins are connected to VCC and not to GND, as usual - not that it matters this time.

Now, I just connect wires from my small microUSB+3.3V breakout board to the touchscreen, and, after swapping D+ and D- wires once (at the breakout, not at the connector), it works:

This would be an extremely complex procedure. You are talking about reverse engineering which will require hours of diagnosing with an oscilloscope for example if you did manage to get the pinouts from both devices the 20 data lines for touch are not going to be called the same on both devices. Every make and model will have different signals and line names. You might be able to run the backlight from the tablet power supply but you will need the LCD power lines coming from the phone.

There are two cable options for connecting the PanelDue, both options are included with the PanelDue V3 kit. Option 1 is the included 4-wire cable with Molex KK connector ends. Option 2 is the included 10-wire ribbon cable. For some boards, both cables need to be plugged in to enable both TFT panel and SD card socket.

The length of the 4-way cable is not critical, however the resistance per conductor should not exceed 0.1 ohm. The SD card socket on the TFT panel will not be functional. The cables supplied by Escher3D and Duet3D are about 800mm long. There have been reports of cables up to 1500mm long being successfully used. Take care to route the cable away from motor and endstop cables. Twisting the cables may help prevent cross talk interference.

A PanelDue can be connected to connector IO_0 using a 4-core cable wired like the one shown in the images below. The 4-wire cable supplied with the PanelDue has a 4-way Molex KK connecter on each end, but is supplied with a 5-way Molex KK connector for use with Duet 3. You will need to rewire one end. The 4-wire cable does not allow access to the SD card socket on the PanelDue.

Older versions of the Duet 2 WiFi/Ethernet need both the 4-wire and ribbon cable to be plugged in to use the TFT Panel and the SD card socket, when connecting PanelDue v2.0 or v3.0.

Use a 4-core cable terminated in a Molex KK or compatible connector at the PanelDue end and a 2x4 Dupont-style connector at the Duet end. This plugs into the end of the expansion connector. See https://miscsolutions.wordpress.com/pane....

In order to use the SD card slot on the PanelDue, you must use the ribbon cable option. If you do not wish to use the SD card slot, it"s recommended to use the 4-wire cable option described in Option 1.

The Duet 3 MB6HC has no PanelDue_SD socket. To use the external SD card, it requires RRF 3.4 or later, and a special wiring scheme; see "Duet 3 MB6HC using ribbon cable" section below.

Connect a 10-way ribbon cable between socket X5 on the PanelDue and socket CONN_SD (Duet 2) or PanelDue_SD (Duet 3). The connector is a standard 10 pin 2 row 2.54mm pitch box connector that accepts IDC connectors for 1.27mm ribbon cable.

Caution: if you are using a thermocouple and/or PT100 daughter board, the use of long ribbon cables between the Duet and PanelDue may affect communication between the Duet and the daughter boards, because the ribbon cable connection to the SD card on PanelDue uses the same SPI bus as the daughter boards.

Although the Duet 3 MB6HC does not have a connector for the PanelDue ribbon cable, if access to the SD card on PanelDue is required then this is possible using a special wiring arrangement. You must use RepRapFirmware 3.4 or later, and you must enable the external SD card using this command:

where cs_pin is the pin that the SD card CS line is connected to and cd_pin is the pin that the SD card detect pin (if available) is connected to. For these pins, if you are not using a temperature daughter board then we suggest that you use CS0 and CS2 respectively on the SPI daughter board connector to simplify the wiring; otherwise use the output pin and the input pin on one of the IO connectors. So the M950 line would look like this:

Note: if you are using an older version of either PanelDue 7i or PanelDue 5i, or a non-integrated version of PanelDue, then those do not support the CD signal. In that case you should omit the second port, for example:

The card detect signal (CD) is used to tell the Duet whether a card is inserted or not. Non-integrated versions of PanelDue (V2, V3) and older versions of PanelDue 5i and 7i (v1.0 of the 5i and v2.0 of the 7i) do not provide a card detect signal.

Duet 2 boards do not support the card detect signal on the external SD card, so can never tell whether a card is inserted or not except by trying to read it, and can"t detect a card being removed. No modifications are required connected older or newer PanelDue, or other external SD card adapters, to Duet 2 boards.

Duet 3 boards do support the card detect signal. Newer versions of the PanelDue 5i and 7i (v1.01 and later of the 5i and v2.01 and later of the 7i) provide this signal.

However, if you use a non-integrated versions of PanelDue or older versions of PanelDue 5i and 7i with Duet 3, it is necessary to ground the card detect signal, or the firmware will permanently think no card is inserted. There are a number of ways to achieve this.

This mod will enable the card detect signal. See the pictures below showing how to modify a PanelDue 5i v1.0. Connect a wire (thin enamelled copper in this instance) from the SD card socket Card Detect pin to the appropriate pin on the ribbon cable connector.

On the Duet 3 Mini 5+ you can ground the card detect signal by bridging pins 2 and 4 of the EXP2 connector as shown here. The firmware will see the SD card as always being present.

Generally it is best to run the latest version of the PanelDue firmware that is supported by the RepRapFirmware version on your Duet mainboard. See: Installing and Updating PanelDue Firmware

From RRF v3.2, PanelDue firmware releases are co-ordinated with the RRF release, and share the same version number. Use the PanelDue firmware version that matches your Duet mainboard"s firmware version.

PanelDue will display the bed heater H0 first (even if it is disabled), then iterate the defined tools. It then iterates the defined heaters below this. It expects a 1:1 relationship between tools and heaters. This means:if you have a machine that uses one heater for more than one tool (eg a 2-into-1, filament-swapping hot end), it will display more tools than heaters. Tools may not line up with their respective heaters.

The PanelDue also iterates the heaters from the first defined heater to the last, including all heaters in between, whether defined or not. This means if you have a heater defined on H0 (bed) and one on H5 (Duex output), it will show all the ones in between, eg H0, H1, H2, H3, H4 and H5. For an example, see |https://forum.duet3d.com/post/136207|this forum post|. Ideally, configure heaters on consecutive heater connections.

Due to constraints on display resolution, PanelDue can only display 7 heaters in total on 5" and 7" panels, and 5 on 4.3" panels. If there are more heaters and/or tools than this, some columns will overlap.

These restrictions are largely removed in later versions of the PanelDue firmware. However, they will require you to update RepRapFirmware on your Duet mainboard.

You can use the external SD card socket on the LCD panel if you have used a ribbon cable as described above. Please note, the SPI interface provided by this SD card socket is much slower than the on-board SD card socket built into the Duet. Therefore we recommend that you do not upload files to this card over the network. Use the external SD card socket only if you want to write files to the SD card on a PC and then move the SD card to your printer.

Caution! Do not use an SD extender cable from the SD socket on the Panel Due. Some types of SD card extender cable have been found to damage the SD card socket. Damage to the SD card socket from using an extender cable is not covered by the warranty.

You will need to make a custom 5-way cable using this table of connections. For the PanelDue 1.1, the X5 connector pins are numbered from the bottom end of the connector (the end close to the X5 legend). On the Duet 0.6 and 0.8.5 you need RepRapFirmware 1.17d or later to get support for the second SD card.

SD signal namePanelDue 1.1 X5 pin #PanelDue 2.0 X5 pin #Duet 2 signal nameDuet 2 CONN_SD pin #Duet 0.6/0.8.5 signal nameDuet 0.6/0.8.5 Expansion pinDueX4 Expansion1 pin

These displays are typically clones of the RepRapDiscount Full Graphic Smart Controller and look like this. The better ones include a contrast adjustment potentiometer. Unfortunately some manufacturers of other displays using the same controller chip reverse the pinouts on the two ribbon cable connectors. The ST7920 controller chip is invariably powered from 5V, which means that the display need 5V input signal levels.

An example of this is the Fysetc Mini 12864 Panel. The controller chip is run from 3.3V, so these displays normally include level shifters which tolerate a wide range of input voltages.

Duet 3 Mini provides two 2x5 ribbon cable headers for connecting a Fysetc 12864 Mini Panel version 1.2 or 2.1 (not 2.0) or compatible ST7567-based controller. When using a version 2.1 controller, the colours of the three Neopixel LEDs built into the display can be set using the M150 command with LED type parameter X2.

We do not recommend connecting a 12864 display with ST7920 controller to the Duet 3 Mini because the 3.3V signals provided by the Duet 3 Mini do not meet the specifications of the ST7920 controller chip when it is powered from 5V. If you do wish to try it, you will most likely have to reduce the clock frequency (M918 F parameter) to get it working at all, and it may not work reliably. Also, note that when configured for 12864 display with ST7920 controller, RRF provides the CS signal on the pin normally uses for A0 because that more closely matched the pinout of typical 12864/ST7920 displays.

The Duet 2 Maestro provides two 2x5 ribbon cable headers for a 12864 display using ST7920 controller. The connector pinout is compatible with the original RepRapDiscount design. There is also more information in this thread: https://forum.duet3d.com/topic/7609/conf....

Use the pins +5V, GND, IO_0_OUT and IO_0_IN on the IO_0 header (Duet 3), or +5V, GND, TX and RX on the PanelDue header (Duet 2). These should be connected to +5V, GND, TX and RX on the TFT, making sure that TX and RX are swapped.

Low-Voltage Differential Signaling (LVDS) cables typically connect a flat panel display to its control board. While some panel and board combinations may work with a stock cable often a custom cable is needed. This is because each flat panel and control board has a unique pinout and connector required to mate with it. Our engineers will work with you to design your custom cable, to determine the connectors needed, the pinout required to properly connect the components, and any other items that may be needed such as EMI protection and shielding, etc.

Low Voltage Differential Signaling (LVDS) cables with twisted pairs. LVDS cables are custom made to interface between your LCD and Control/SBC or Embedded Mother Board. Shielding options available. Lengths vary from 3.00 inches, to as long as 15.00 feet. Fully Customized to meet your exact needs.

With all of the different LCD panel makers, board makers, Inverter and LED Driver makers out there, the endless variety of components and peripherals yield almost endless connector and pin mapping configurations. Our expertise that has made us an industry pioneer is connecting all of these various devices together with quality products. There are thousands of different connectors that appear on these difference devices. Finding a cable house that is tooled for all of these different parts is hard enough. Finding one with the experience and know how to design, scramble pin maps, maintain differential impedance, shield products to mitigate EMI, all while knowing what hidden aspects of the cable design to look for is our business. With well over 10,000 unique designs on file, all with unique bill of materials, and customized to each customers requirements, our experience helps to assist our customers on all levels of the cable design, and subsequent product support thereafter.

In some cases LCD panels will only have (1) connector on them which contains both data and backlight signals. This cable generally yields a "Y" or "V" shaped cable. This is because the SBC (single board computer), Controller or Embedded Motherboard generally has seperate DATA and BACKLIGHT connectors. Is you LCD panel 18bit or 24bit? PWM or Analog dimming? Do you know what screen orientation you need? Is your panel Dual, Single or even Quad Channel LVDS? All of these factors and many more yield the final cable design. This is where we come in. With over 10,000 unique cable designs that we can produce at an time we have the experience to help offer guidance and expertise where needed.

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This connector can replace a broken connector on the PCB of an A1706, A1708, or A1707 USB-C Macbook Pro LCD screen. It can also be used to replace the LCD connector on the logic board itself.