Basic stamp homework board manual

ManualsBrandsParallax ManualsMicrocontroller KitsBASIC Stamp Activity Kit

Parallax, Inc. • BASIC Stamp HomeWork Board ver 1.1 Page 1

599 Menlo Drive, Suite 100

Rocklin, California 95765, USA

Office: (916) 624-8333

Fax: (916) 624-8003

General: info@parallaxinc.com

Technical: support@parallax.com

Web Site: www.parallax.com

Educational:

http://www.parallax.com/html_pages/edu/

BASIC Stamp HomeWork Board

#29158 10-pack of Breadboard version

#29157 10-pack of Through-Hole version

Introduction

It’s not often that we start technical documentation with a bit of marketing punch. If you like the low cost of a

BASIC Stamp Rev. D (retails ~$34) and the idea of a half-price BASIC Stamp 2 / Board of Education (retails

~$109) then the BASIC Stamp HomeWork board is the ticket for your class. This is the least expensive way to

get a large educational group started with the BASIC Stamp.

The HomeWork Boards were created exclusively for educators to send home with students with these uses in

mind:

• BASIC Stamp-related homework assignments

• Dedicated science-fair, contest or hobby projects

• Students who express personal interest in further developing their BASIC Stamp projects but can’t have

their own Board of Education / BS2 due to it’s higher cost

Since it’s less expensive than the Board of Education / BS2 module, can the board be used for Stamps in Class

experiments? Possibly, with the following considerations:

• Servo connection ports for robotics are not included on the HomeWork Board. It’s possible to use

male/male headers for servo connections with a second power supply jumpered to the HomeWork

Board to control servos.

• 220 ohm resistors are built into each of the 16 I/O pins for current protection so the PBASIC interpreter

cannot be easily damaged. This protects the BASIC Stamp from over-current conditions but also

slightly changes the behavior of the Stamps in Class experiments if used on this board based on the

command being used.

• Stamps in Class circuit pictorials do not match the HomeWork Board. Again, minor workaround once

you understand the difference between the power supply options.

• Power supply is from a 9V battery, not the wall pack.

• Current supply from the on-board regulator is limited to 50 mA versus the Board of Education’s amp or

more.

However, these cost-reducing limitations do not limit the use of the HomeWork Board for other projects. In fact,

the minimalist design is simple to use and entirely flexible for most projects.

Summary of content (18 pages)

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599 Menlo Drive, Suite 100 Rocklin, California 95765, USA Office: (916) 624-8333 Fax: (916) 624-8003 General: info@parallaxinc.com Technical: support@parallax.com Web Site: www.parallax.com Educational: http://www.parallax.com/html_pages/edu/ BASIC Stamp HomeWork Board #29158 10-pack of Breadboard version #29157 10-pack of Through-Hole version Introduction It’s not often that we start technical documentation with a bit of marketing punch. If you like the low cost of a BASIC Stamp Rev.
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Package Contents The BASIC Stamp HomeWork Board is sold only in quantities of 10. The reason for this is that the board is intended for the educational market only, to be purchased by educators for use in their classrooms. The kit includes only the boards – nothing else. BASIC Stamp HomeWork Board Hardware Design BASIC Stamp HomeWork Board uses the BASIC Stamp 2 surface-mounted directly to the printed circuit board.
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Figure 1 B StampLab printed circuit board keyed with part identifications. STA in M PS CLA SS C A H Power G E G F Reset (916) 624-8333 www.parallaxinc.com www.stampsinclass.com Vdd X3 X4 P15 P14 P13 P12 P11 P10 P9 P8 P7 P6 P5 P4 P3 P2 P1 P0 Vin Rev A Vss D © 2002  BASIC Stamp HomeWork Board A. BASIC Stamp 2 Module.
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Vss C1 10µF Vss P15 P14 P13 P12 P11 P10 P9 P8 P7 P6 P5 P4 P3 P2 P1 P0 R1 10kΩ Vss Reset PB1 RN3 220Ω RN4 220Ω Vss P0 P1 P2 P3 Vss RN2 220Ω U1 Vdd VSS RTCCI OSC1 OSC2 VDD RC7 VDD RC6 RA0 RC5 RA1 PIC16C57-20/SS RA2 (PBASIC2/SS) RC4 RC3 RA3 RC2 RB0 RC1 RB1 RC0 RB2 RB7 RB3 RB6 RB4 VSS RB5 Vss 28 27 26 25 24 23 22 21 20 19 18 17 16 15 P15 P14 P13 P12 P11 P10 P9 P8 P7 P6 P5 P4 RN5 220Ω D2 LED Power U2 Vdd A0 N/C A1 A2 24LC16B Clk Vss Dat Vss C4 0.1µF DB9 Female C3 0.
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MilliAmp hours is a statistic measuring the amount of energy stored in a battery. For example, if you have a 1 mA-hr battery and a project drawing 0.5 milliamps, the battery will last for two hours. A typical 9V Duracell alkaline transistor battery provides about 565 milliAmp hours of energy. If the BASIC Stamp is being used in a project where at least some small amount of time is spent doing nothing you can put it in a low-power mode to extend battery life using the SLEEP command (Table 2).
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With the SLEEP example the Power LED turns off when the SLEEP command is being executed because the EEPROM is inactive. Current consumption is 10 mA while the loop is being executed but drops to 40 µA during the SLEEP command. ' POWER DEMO - SLEEP.
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Quick Start Programming Guide This chapter is a quick start guide to connecting the BASIC Stamp to the PC and programming it. Without even knowing how the BASIC Stamp functions, you should be able to complete the exercise without difficulty. Connecting Serial Cable and Power Supply Connect the 9-pin female side of a serial cable to an available serial port on your computer. Connect the 9-pin male side of the cable to the DB9 connector to BASIC Stamp HomeWork Board.
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Figure 4 Software install Step 1 – just click “Next”. Figure 5 Software install Step 2. Choose “Typical” for a standard installation. Parallax, Inc. • BASIC Stamp HomeWork Board ver 1.
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Figure 6 Software install Step 3. Click “Install” and finish the process. Figure 7 Finish the installation process.. Downloading a Program The BASIC Stamp Windows Editor was designed to be easy to use and mostly intuitive. Those who are familiar with standard Windows software should feel comfortable using the BASIC Stamp Windows Editor (Figure 9). The editor consists of one main editor window that can be used to view and modify up to 16 different source code files at once.
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Figure 9 BASIC Stamp Windows Editor. Because the Windows editor supports more than one model of the BASIC Stamp, it is necessary to tell the editor which model you are trying to program. The STAMP directive is a special command that should be included (near the top) in a program to indicate the model of BASIC Stamp targeted.
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Figure 10 Successful BASIC Stamp program download. Want to program with a Palm Pilot, Macintosh or using Linux? In August 2002 Parallax released compiled “tokenizer” code that enables developers of other platforms to design programming interfaces for different operating systems. Check www.parallaxinc.com/editor for possible releases.
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Table 5 Coding functions shortcut keys. Shortcut Key F6 or Ctrl+I F7 or Ctrl+T F8 or Ctrl+M F9 or Ctrl+R Ctrl+ ESC Function Identify BASIC Stamp firmware Perform a syntax check on code and display error messages Open Memory Map window Tokenize code, download to BASIC Stamp and open DEBUG window if necessary Switch to Editor window Close current window Memory Map The BASIC Stamp Windows Editor also features a Memory Map.
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Example Program Introduction As we mention in the section on electronics fundamentals, Light Emitting Diodes (LED) are the most widely used indicators in the electronics world. They come in a tremendous variety of colors, shapes and sizes. Their low current requirements make them perfect for digital control. Through a simple series of experiments, you'll learn how to have control over an LED and also the ins-and-outs of working with BASIC Stamp microcontroller outputs.
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Figure 12 P12 220Ω Blinking LED circuit. Vss (916) 624-8333 www.parallaxinc.com www.stampsinclass.com Vdd Vin Rev A Vss X3 X4 P15 P14 P13 P12 P11 P10 P9 P8 P7 P6 P5 P4 P3 P2 P1 P0 © 2002 Code Listing The simplest way to control a BASIC Stamp output pin is with the HIGH (on) and LOW (off) commands. Both commands require a pin number parameter. Let's take a look at Listing 1a to see HIGH and LOW in action. ' {$STAMP BS2} ' Program: LED Blink.
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Next, we make the LED control pin go to zero volts with LOW. With zero volts on both sides of the LED, no current can flow and it turns off. Again, we use PAUSE to create a delay so that we can actually see that it is off. Finally, we start the process over by jumping to the line labeled Start with the GOTO command. Download and run the program – you should see the LED blink happily on and off. If you don't, double-check your connections; especially the orientation of the LED.
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Outs is a zero, the associated output pin will be low (0 volts). When a bit in Outs is one, the associated output pin will be high (5 volts). So, HIGH 15 is the same as: Dir15 = 1 Out15 = 1 and LOW 15 is the same as: Dir15 = 1 Out15 = 0 You'll remember from the variables overview in Chapter XX that Dirs and Outs can be accessed as a Word (16 bits), as two Bytes (8 bits), as four Nibbles (4 bits) or as 16 individual Bits. So, Dir15 corresponds to bit 15 of the Dirs register.
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Advanced LED Control Another advantage to this program style is that we can cause the LED to follow the operation of a different value within our program. We can do this because Out15 is actually a bit-sized variable [a value that can change]. We can copy another bit-sized variable to it and cause the LED to follow the value of that variable. Listing 1d is a bit advanced, but you can handle it. Take a look and then we'll go into all the details. ' {$STAMP BS2} ' Program: LED Blink.
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The first thing we'll do is create a report on what's happening. We start with DEBUG Home which causes the DEBUG cursor [not visible] to move to the first row, first column of the screen. Next we'll print out the values of blinkVal and blinkBit using the DEC modifier to specify their display as decimal numbers. If we leave DEC out, the DEBUG window with attempt to display the characters defined by their current value – that's not what we want.