28029 Parallax Inc, 28029 Datasheet - Page 19

• Manufacturer Part Number: 28029
• Description: KIT PARTS SMART SENSORS W/TEXT
• Manufacturer: Parallax Inc

Specifications of 28029

• Accessory Type: Parts Kit
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: BASIC Stamp® or Javelin Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
• Other names: 28029PAR

Adjusting the LCD to Receive Messages from the BASIC Stamp
Serial communication involves a baud rate. That's the number of bits per second (bps)
the sender transmits, and the receiver has to be ready to receive data at the same baud
rate. In this chapter's activities, the BASIC Stamp will be programmed to send messages
to the LCD at 9600 bps. You can adjust the same switches you used for the LCD self-test
to set this baud rate.
The screen will remain blank until you program the BASIC Stamp 2 to control the
display.
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√
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√
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If the display seems dim or looks blank, there is a contrast adjustment
potentiometer shown in Figure 1-7 that you can turn with a screwdriver. If the
display is already clear and all the characters look good, you probably don't need
to adjust it. If the characters are too dim, or they appear in gray boxes, adjusting
the potentiometer should help.
Adjust the contrast potentiometer if needed.
Turn the Board of Education power off.
Leave SW1 in the OFF position.
Set SW2 to ON as shown in Figure 1-8.
Turn the power back on now.
Chapter 1: Parallax Serial LCD Display · Page 7
Figure 1-7
Contrast
Adjustment
Potentiometer