VFD2021 User Manual Important: Read page 2 before applying power.
Connecting VFD2021 Regular Voltage Power is applied to the white or brown four pin SIP connector as follows: Pin 1: +5Vdc Pin 2: = SCL (I²C clock) Pin 3: = SDA (I²C data) Pin 4: Gnd If the sole data source is via the RS-232, the data input is via the DB9 connector. Pins 2 and 3 are not used.
Power may be provided to the module by pin 9 of the DB9 connector instead of through the 4-pin SIP. If power is to be applied using the DB9, it must be a regulated 5Vdc supply. If the user intends to use pin 9 as the power source, the user must solder the 5 volt jumper point beside the DB9 connector. If you have any further questions or concerns don’t hesitate to contact Matrix Orbital at support@matrix-orbital.com. Warning: Use this method of power up at your own risk.
Configuring VFD2021 Default configuration is J1 and J2 installed. This configures the RS-232 to 19 200 baud and I²C to slave address 0x5C depending on which connector is used. Please refer to the Appendix of this manual for programming notes.
VFD2021 Command Set Write Text This section of the manual allows the user to send commands to the VFD to alter the appearance or behavior of the display. To utilize a command, the user must send a command prefix followed by the command in the format described in this portion of the manual. Any characters sent without a command prefix will be interpreted as text and will be displayed on the module at the current cursor position. The current cursor position will be incremented for each character received.
Backlight On ASCII 'B', Hex 42, Decimal 66 Syntax 0xFE 0x42 To turn the backlight on, send a command prefix followed by the character 'B' and the number of minutes for the backlight to remain on. If is sent as zero then the backlight will remain on indefinitely. The maximum value for is 100.
Cursor Left ASCII 'L', Hex 4C, Decimal 76 Syntax 0xFE 0x4C To move the cursor one space to the left of current position, send a command prefix followed by the character 'L'. Cursor Right ASCII 'M', Hex 4D, Decimal 77 Syntax 0xFE x04D To move the cursor one space to the right of the current position, send a command prefix followed by the character 'M'.
Pixel Layout of Display Characters 1 6 11 16 21 26 31 2 3 4 5 7 8 9 10 12 13 14 15 17 18 19 20 22 23 24 25 27 28 29 30 32 33 34 35 Cursor Line General Purpose Output On ASCII ' V', Hex 56, Decimal 86 Syntax 0xFE 0x56 To turn a general output purpose on, send a command prefix followed by the character 'V' and hex number which corresponds to the output which will be turned on.
Make Horizontal Bar Graph ASCII '|', Hex 7C, Decimal 124 Syntax 0xFE 0x7C This command places a horizontal bar graph at the specified column and row with the specified width.
VFD Character Font Chart 10
Specifications Environmental Specifications Operating Temperature Storage Temperature Operating Relative Humidity Vibration (non-operating) Shock (non-operating) Supply Voltage Supply Current (all dots on) Supply Current (display off) Supply Current (power up) Standard Temp. Extended Temp. -20º to +70º C -40º to +85º C -40º to +80º C -50º to +85º C 20 - 80% max non-condensing 10 to 55 to 10Hz (Frequency) 1.
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Contact Information To request information or purchase any of Matrix Orbital Corporation's products please contact one of our Authorized Distributors. For technical questions and support please contact us. Sales/Accounts Chantelle Jenkins cjenkins@matrix-orbital.com Technical Support Aman Sidhu support@matrix-orbital.com Lead Project Engineer Rob Hansen rhansen@matrix-orbital.com Tel: (403) 229-2737 Fax: (403) 229-1963 Or visit us at our website: http://www.matrix-orbital.
