LK162-12/VK162-12 Including the LK162-12-USB and VK162-12-USB Technical Manual Revision 4.2 PCB Revision: 3.0 or Higher (Standard Model), 1.0 or Higher (USB Model) Firmware Revision: 5.
Revision History Revision 4.2 4.1 4.
Contents 1 Introduction ............................................................................................................................................... 1 2 Quick Connect Guide.................................................................................................................................. 2 2.1 Available Headers ............................................................................................................................... 2 3 Quick Connect Guide...............
6.4 Manual Override ............................................................................................................................... 13 7 Commands ............................................................................................................................................... 14 7.1 Communication ................................................................................................................................. 14 7.2 Text............................................
1 Introduction Figure 1: LK162-12 Display Figure 2: VK162-12 Display The LK162-12/VK162-12 is an intelligent alphanumeric liquid crystal display designed to decrease development time by providing an instant solution to any project. In addition to the RS232, TTL and I2C protocols available in the standard model, the USB communication model allow the LK162-12/VK162-12 to be connected to a wide variety of host controllers. Communication speeds of up to 115.
2 Quick Connect Guide 2.
3 Quick Connect Guide 3.1 Standard Module The LK162-12/VK162-12 allows for user configuration of two common communication protocols. First, the unit can communicate using serial protocol at either RS323 or TTL voltage levels. Second, it can communicate using the Inter-Integrated Circuit connect, or I2C protocol. Connections for each protocol can be accessed through the four pin Communication/Power Header as outlined in the Serial Connections and I2C Connections sections below.
2. Make the connections. a. Connect the four pin female header of the Communication/Power Cable to the Communication/Power Header of your LK162-12/VK162-12. b. Insert the male end of your serial cable to the corresponding DB9 header of the Communication/Power Cable and the mate the female connector with the desired communication port of your computer. c. Select an unmodified floppy cable from a PC power supply and connect it to the power header of the Communication/Power Cable. 3. Create.
3.2 USB Module The LK162-12/VK162-12-USB offers a single USB protocol for an easy connection to a host computer. This simple and widely available protocol can be accessed using the on board mini B style USB connector as outlined in the USB Connections section. Recommended Parts The External Mini USB cable is recommended for the LK162-12/VK162-12USB display. It will connect to the miniB style header on the unit and provide a connection to a regular A style USB connector, commonly found on a PC.
4 Software The multiple communication protocols available and simple command structure of the LK162-12/VK16212 means that a variety of applications can be used to communicate with the display. Text is sent to the display as a character string, for example, sending the decimal value 41 will result in an 'A' appearing on the screen. A number of control characters are also activated. Commands are merely values prefixed with a special command byte, 254 in decimal.
Again, the clear screen command is sent to a connected display, this time using uProject raw data command style. Scripts can be run as a whole using the execute command from the script menu, or as single commands by selecting execute once. Before issuing commands, it is a good idea to ensure communication with a display is successful using some of the more basic GUI functions in the main window. This program provides scratch pad upon which a tome of display projects and ideas can be assembled. 4.
5 Hardware 5.1 Standard Model Communication/Power Header Table 4: Communication/Power Pinout Figure 9: Communication/Power Header Pin 1 2 3 4 Function Vcc Rx (SCL) Tx (SDA) Gnd The Communication/Power Header provides a standard connector for interfacing to the LK16212/VK162-12. Voltage is applied through pins one and four of the four pin Communication/Power Header. Please ensure the correct voltage input for your display by referencing Voltage Specifications before connecting power.
Power Through DB9 Jumper In order to provide power through pin 9 of the DB-9 Connector you must connect the Power Through DB-9 Jumper labelled D, as illustrated below. This connection can be made using a zero ohm resistor, recommended size 0603, or a solder bridge. The LK162-12/VK162-12 allows all voltage models to use the power through DB-9 option, see the Voltage Specifications for power requirements.
5.1 USB Model Mini USB Connector Table 6: Mini USB Pinout Figure 12: Mini USB Connector Pin 1 2 3 5 Function Vcc DD+ Gnd The LK162-12/VK162-12-USB comes with a familiar Mini USB Connector to fulfill both communication and power needs. The standard MiniB style header can be connected to any other USB style using the appropriate cable. Most commonly used with a PC, this connection creates a virtual com port that offers a simple power solution with a familiar communication scheme.
5.2 Common Features General Purpose Input/Output Table 8: GPIO Pinout Figure 14: GPIO Header Pin 1 2 3 4 5 6 7 8 Function GPO 1/Row 1 GPO 2/Row 2 GPO 3/Row 3 GPO 4/ Col 1 GPO 5/ Col 2 GPO 6/ Col 3 GPO 7/Col 4 Vcc Pin 9 10 11 12 13 14 15 16 Function Gnd Gnd Gnd Gnd Gnd Gnd Gnd Gnd A unique feature of the LK162-12/VK162-12 is the ability to control relays* and other external devices using either one or seven General Purpose Outputs.
6 Troubleshooting 6.1 Power In order for your Matrix Orbital Display to function correctly, it must be supplied with the appropriate power. If the power LED near the top right corner of the board is not illuminated, power is not applied correctly. Try following the tips below. First, check the power cable which you are using for continuity. If you don't have an ohm meter, try using a different power cable, if this does not help try using a different power supply.
6.3 Communication When communication of either text or commands is interrupted, try the steps below. • • • • • • • • First, check the communication cable for continuity. If you don't have an ohm meter, try using a different communication cable. If you are using a PC try using a different Com/USB Port. Next, please ensure that the display module is set to communicate on the protocol that you are using, by checking the Protocol Select Jumpers.
7 Commands 7.1 Communication 1.1 Change Baud Rate Dec 254 57 Speed Hex FE 39 Speed ASCII ■ 9 Speed Immediately changes the baud rate. Not available in I2C. Baud rate can be temporarily forced to 19200 by a manual override. Speed Byte Valid settings shown below. v5.1 Table 11: Accepted Baud Rate Values Rate Speed 1200 83 2400 41 4800 207 9600 103 19200 51 28800 34 38400 25 57600 16 *76800 12 *115200 8 2 1.2 Change I C Slave Address Dec 254 51 Address v5.
7.2 Text 2.1 Clear Screen Dec 254 88 Hex FE 58 ASCII ■X Clears the contents of the screen. v5.1 2.2 Change the Start Up Screen Dec 254 64 Characters v5.1 Hex FE 40 Characters ASCII ■ @ Characters Changes the message displayed on start up. Custom characters can be included by adding their decimal value (07). Characters will automatically wrap on the display. Characters 32 bytes, space characters can be added as needed 2.3 Auto Scroll On Dec 254 81 v5.
2.8 Go Home Dec 254 72 Hex FE 48 ASCII ■H Returns the cursor to the top left of the screen. v5.1 2.9 Move Cursor Back Dec 254 76 Hex FE 4C ASCII ■L Moves cursor one position to the left. Cursor will obey wrap settings. v5.1 2.10 Move Cursor Forward Dec 254 77 Hex FE 4D ASCII ■M Moves cursor one position to the right. Cursor will obey wrap settings. v5.1 2.11 Underline Cursor On Dec 254 74 Hex FE 4A ASCII ■J Displays a line under the current cursor position. Can be used with block cursor. v5.1 2.
7.3 Special Characters 3.1 Create a Custom Character Dec 254 78 ID Data v5.1 Hex FE 4E ID Data ASCII ■ N ID Data Creates a custom character. Each character is divided into 8 rows of 5 pixels; each data byte represents one row. Each byte is padded by three zero bits followed by five bits representing each pixel state. A one represents an on condition while a zero is off. Characters are lost when a new memory bank is loaded, unless they are saved. ID Byte Character ID, value between 0 and 7.
3.4 Save Start Up Dec 254 194 ID Data v5.1 Screen Custom Hex FE C2 ID Data ■ ┬ ID Data Characters ASCII Saves a custom character to memory for the start up screen or repeated use. Start up characters are displayed by sending their ID to the screen. ID Byte Value between 0 and 7. Data Byte[8] Character pixel data, see Custom Degree Character example. 3.5 Initialize Medium Numbers Dec 254 109 v5.1 Hex FE 6D ASCII ■m Loads the medium number custom character bank into memory.
3.10 Initialize Wide Vertical Bar Dec 254 118 v5.1 Hex FE 76 ASCII ■v Loads the wide horizontal bar graph custom character bank into memory. A wide bar is 5 pixels wide. Horizontal bar characters must be initialized before a graph is displayed. 3.11 Place Vertical Bar Dec 254 61 Column Length v5.1 Hex FE 3D Column Length ASCII ■ = Column Length Places a vertical bar graph on the screen extending from the first row of the column specified. The bar extends upwards to the length indicated.
7.5 Dallas One-Wire 5.1 Search for a One-Wire Device Dec 254 200 2 v5.1 Hex FE C8 02 ■ ╚ SOT ASCII Sends a search query to each of the up to 32 devices on the one wire bus. Any connected device will respond with an identification packet. Response Bytes [14] Dallas One-Wire identification packet as shown below.
7.6 Keypad 6.1 Auto Transmit Key Presses On Dec 254 65 Hex FE 41 ASCII ■A Key presses are automatically sent to the host when received by the display. Default is Auto Transmit on. v5.1 6.2 Auto Transmit Key Presses Off Dec 254 79 v5.1 Hex FE 4F ASCII ■O Key presses are held in the 10 key buffer to be polled by the host using the Poll Key Press command. Use this mode for I2C transactions. Default is Auto Transmit on. 6.3 Poll Key Press Dec 254 38 v5.
6.7 Auto Repeat Mode Off Dec 254 96 Hex FE 60 ■` ASCII Turns auto repeat mode off. Default is on (typematic). v5.1 6.8 Assign Keypad Codes Dec 254 213 Key Down Key Up v5.1 Hex FE D5 Key Down Key Up ■ ╒ Key Down Key Up ASCII Assigns the key down and key up values sent to the host when a key press is detected. A key up and key down value must be sent for every key, a value of 255 will leave the key unaltered. Defaults are shown below.
7.4 Set and Save Brightness* Dec 254 152 Brightness v5.1 Hex FE 98 Brightness ASCII ■ ÿ Brightness Immediately sets and saves the backlight brightness. Although brightness can be changed using the set command, it is reset to this saved value on start up. Default is 255. Brightness Byte Brightness level from 0(Dim) to 255(Bright). 7.5 Set Backlight Colour Dec 254 130 Red Green Blue Hex FE 82 Red Green Blue ■ é Red Green Blue ASCII Set the colour of a tri-colour backlight. Only for tri-colour displays.
7.8 Data Security 8.1 Set Remember Dec 254 147 Switch v5.1 Hex FE 93 Switch ASCII ■ ô Switch Allows changes to specific settings to be saved to the display memory. Writing to non-volatile memory can be slow and each change consumes 1 write of at least 100,000 available. The Command Summary outlines which commands are saved always, never, and when this command is on only. Remember is off by default. Switch Byte 1 for on or 0 for off. 8.2 Set Data Lock Dec 254 202 245 160 Level v5.
7.9 Miscellaneous 9.1 Write Customer Data Dec 254 52 Data v5.1 Hex FE 34 Data ASCII ■ 4 Data Saves a user defined block of data to non-volatile memory. Useful for storing display information for later use. Data Byte [16] User defined data. 9.2 Read Customer Data Dec 254 53 v5.1 Hex FE 35 ASCII ■5 Reads data previously written to non-volatile memory. Data is only changed when written, surviving power cycles. Response Byte [16] Previously saved user defined data. 9.
8 Appendix 8.1 Command Summary Available commands below include identifying number, required parameters, the returned response and an indication of whether settings are remembered always, never, or with remember set to on.
Table 24: Special Character Command Summary Name Create a Custom Character Save Custom Characters Load Custom Characters Save Start Up Screen Custom Characters Initialize Medium Numbers Place Medium Numbers Initialize Horizontal Bar Place Horizontal Bar Graph Initialize Narrow Vertical Bar Initialize Wide Vertical Bar Place Vertical Bar Dec 78 193 192 Hex 4E C1 C0 ASCII N ñ └ Parameters Byte[9] Byte[10] Byte Response None None None Remembered Remember On Always Never 194 C2 ┬ Byte[9] None Alway
Table 28: Display Functions Command Summary Name Backlight On Backlight Off Set Brightness* Set and Save Brightness* Set Backlight Colour Set Contrast* Set and Save Contrast* Set VFD Brightness** Set and Save VFD Brightness** Dec 66 70 153 152 130 80 145 89 145 Hex 42 46 99 98 82 50 91 59 91 ASCII B F Ö ÿ é P æ Y æ Parameters Byte None Byte Byte Byte[3] Byte Byte Byte Byte Response None None None None None None None None None Remembered Remember On Remember On Remember On Always Remember On Remember
8.
Figure 17: VFD Model Japanese Character Set 30
8.3 Block Diagram Figure 18: Functional Diagram 8.4 Environmental Specifications Table 31: Environmental Limits Operating Temperature Storage Temperature Operating Relative Humidity Thermal Shock LCD Standard LCD Extended (-E) VFD Standard VFD Extended (-E) 0°C to +50°C -20°C to +70°C -20°C to +70°C -40°C to +85°C -10°C to +60°C -30°C to +80°C -40°C to +85°C -50°C to +85°C Maximum 90% non-condensing Maximum 80% non-condensing Maximum 10°C /min 8.
8.
Figure 22: VK162-12 Dimensional Drawing Figure 23: VK162-12 Dimensional Drawing Figure 24: VK162-12 Dimensional Drawing 33
8.7 Optical Characteristics Table 35: Display Optics Module Size Viewing Area Active Area Character Size Character Pitch Pixel Size Pixel Pitch Viewing Direction Viewing Angle Contrast Ratio VFD Brightness Backlight Half-Life (YG & IY) Backlight Half-Life (GW, WB & R) MTBF (VFD Screen) LCD Model VFD Model 80.00 x 36.00 x 28.8 56.2 x 11.5 N/A 64.5 x 17.5 11.4 x 51.4 2.95 x 5.55 2.275 x 4.759 3.55 x 5.95 3.275 x 5.991 0.55 x 0.65 0.359 x 0.577 0.60 x 0.70 0.479 x 0.
9.3 Accessories Power PCS Standard Power Cable Communication Table 38: Communication Accessories 35 CSS1FT 1 ft. Serial Cable CSS4FT 4 ft.
Peripherals Table 39: Peripheral Accessories KPP4x4 16 Button Keypad Temperature Probe Dallas One-Wire Temperature Probe 36
10 Definitions ASCII: American standard code for information interchange used to give standardized numeric codes to alphanumeric characters. BPS: Bits per second, a measure of transmission speed. DOW: Dallas One-Wire protocol, similar to I2C, provides reduced data rates at a greater distance. One wire carries data, while two others supply power and ground. Matrix Orbital tests non-parasitic devices only, those that do not draw power from the data line; however, some parasitic devices may work.
