Difference between revisions of "Serial enabled LCD backpack"
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== Communication == | == Communication == | ||
Communication with SerLCD requires 5V TTL serial at a default baud rate of 9600bps with 8 bits of data, 1 start bit, 1 stop bit, and no parity (8-N-1). You can adjust the baud to any standard rate between 2400 and 38400bps. The power, ground and RX pins are all broken out to a 3.5mm pitch screw terminal. | Communication with SerLCD requires 5V TTL serial at a default baud rate of 9600bps with 8 bits of data, 1 start bit, 1 stop bit, and no parity (8-N-1). You can adjust the baud to any standard rate between 2400 and 38400bps. The power, ground and RX pins are all broken out to a 3.5mm pitch screw terminal. | ||
| + | |||
| + | == Pinout == | ||
| + | # Ground (VSS) | ||
| + | # +5V (VDD) | ||
| + | # Contrast adjustment (V0) | ||
| + | # High/Low Register select signal (RS) | ||
| + | # High/Low Read/Write signal (R/W) | ||
| + | # High/Low Enable signal (E) | ||
| + | # High/Low bus line (DB0) | ||
| + | # High/Low bus line (DB1) | ||
| + | # High/Low bus line (DB2) | ||
| + | # High/Low bus line (DB3) | ||
| + | # High/Low bus line (DB4) | ||
| + | # High/Low bus line (DB5) | ||
| + | # High/Low bus line (DB6) | ||
| + | # High/Low bus line (DB7) | ||
| + | # +4.2V for LED (A) | ||
| + | # Power supply for BKL 0V (K) | ||
== Features == | == Features == | ||
Revision as of 04:14, 20 January 2010
The Serial Enabled LCD Backpack (SerLCD) is a product made by Sparkfun that allows control of a parallel based LCD over a single-wire serial interface. The SerLCD backpack takes care of all the HD44780 commands allowing seamless integration with any digital device that can communicate via a TTL serial line. The device is designed to handle a wide range of TTL serial baud rates, and currently supports 16 or 20 character wide screens with 2 or 4 lines of display.
| Serial Enabled LCD Backpack (SerLCD) | |
|---|---|
A version 2 backpack. | |
| General Information | |
| Manufacturer | SparkFun Electronics |
| Average Price | $17 |
| Specifications | |
| Input Voltage | 5 V |
| Max Input Voltage | 5.5 V |
| Current Draw | 3 mA w/o backlight 60mA w/ backlight |
| Clock Speed | 8 MHz |
| Number of Positions | 16 |
| Measurements | |
| Length | 1.75 inches |
| Width | 0.56 inches |
Communication
Communication with SerLCD requires 5V TTL serial at a default baud rate of 9600bps with 8 bits of data, 1 start bit, 1 stop bit, and no parity (8-N-1). You can adjust the baud to any standard rate between 2400 and 38400bps. The power, ground and RX pins are all broken out to a 3.5mm pitch screw terminal.
Pinout
- Ground (VSS)
- +5V (VDD)
- Contrast adjustment (V0)
- High/Low Register select signal (RS)
- High/Low Read/Write signal (R/W)
- High/Low Enable signal (E)
- High/Low bus line (DB0)
- High/Low bus line (DB1)
- High/Low bus line (DB2)
- High/Low bus line (DB3)
- High/Low bus line (DB4)
- High/Low bus line (DB5)
- High/Low bus line (DB6)
- High/Low bus line (DB7)
- +4.2V for LED (A)
- Power supply for BKL 0V (K)
Features
- New PIC 16F688 utilizes onboard UART for greater communication accuracy
- Adjustable baud rates of 2400, 4800, 9600 (default), 14400, 19200 and 38400
- Operational Backspace
- Greater processing speed at 10MHz
- Incoming buffer stores up to 80 characters
- Backlight transistor can handle up to 1A
- Pulse width modulation of backlight allows direct control of backlight brightness and current consumption
- Potentiometer to control contrast
- All surface mount design allows a backpack that is half the size of the original
- Faster boot-up time
- Boot-up display can be turned on/off via firmware
- User definable splash screen
Arduino
SerLCD works seamlessly with the Arduino with the option of using the default serial transmission port, or by creating a SoftwareSerial port.
Code
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This section requires expansion. |