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Testing 1, 2, 3, testing, testing…

Testing 1, 2, 3, testing, testing…. Picaxe JumpStart. Mike Hembrey WCF Technical Specialist KV0OOM. Microcontroller, not microcomputer. Microcomputer: Can perform many tasks Wordprocessing Spreadsheets Video editing Controlling CNC machines Digital communications.

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Testing 1, 2, 3, testing, testing…

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  1. Testing 1, 2, 3, testing, testing…

  2. Picaxe JumpStart Mike Hembrey WCF Technical Specialist KV0OOM

  3. Microcontroller, not microcomputer • Microcomputer: • Can perform many tasks • Wordprocessing • Spreadsheets • Video editing • Controlling CNC machines • Digital communications

  4. Microcontroller, not microcomputer • Microcomputer: • Can perform many tasks • Wordprocessing • Spreadsheets • Video editing • Controlling CNC machines • Digital communications • Microcontroller: • Assigned one task • Limited instruction set • Difference is getting blurred

  5. Microcontroller • Several Languages • Assembler or Machine • “C” • BASIC

  6. Microcontroller • Several Languages • Assembler or Machine • “C” • BASIC  Picaxe

  7. Microcontroller • Several Languages • Assembler or Machine • “C” • BASIC  Picaxe • BASIC is really B.A.S.I.C. • What does this really mean?

  8. Are you smarter than a 9th grader?

  9. Are you smarter than a 9th grader? Say “yes” if you have a Ham license!

  10. $3 Part will have limitations • Memory, but you can add more using I2C • Speed, but you can upsize to faster versions • # of I/O pins, but bigger versions have more pins • Features: analog, digital, PWM, interrupts – (X2 only)

  11. More computing power?

  12. More computing power? • Still want to stick with BASIC to reuse code?

  13. More computing power? • Still want to stick with BASIC to reuse code? • Picaxe 40X2 Chip, faster and more pins • CoridiumARMbasic (compiled) • Parallax BASIC Stamp (educational) • MikroElectronicaMikro BASIC (PIC Clicker)

  14. Picaxe is an Input/Output Device

  15. Picaxe is an Input/Output Device

  16. Picaxe is an Input/Output Device

  17. Picaxe is an Input/Output Device

  18. Picaxe is an Input/Output Device

  19. Picaxe is an Input/Output Device

  20. Picaxe is an Input/Output Device

  21. Picaxe Inputs are very simple • Digital – switches • Analog – variable resistances or voltages

  22. Other Picaxe I/O Modes: • I2C – Inter-IC • synchronous, multi-master, multi-slave, packet switched, single-ended, serial computer bus • Serial – Pseudo RS-232 (due to voltage levels) • 300 to 115,200 baud • PWM – Pulse Width Modulation • The on-off ratio is varied to give more or less power on time • SPI – Serial Peripheral Interface • Faster, subject to noise interference, single master only

  23. Picaxe Manuals & Tutorials • 110 Introduction (chip types [8-40 pins], and pinouts) • 279 BASIC Commands (complete language reference) • 46 Interfacing (using input and output devices) • 60 Flowcharts (simulate and create code programs) • 35Blockly (simulator using drag and drop blocks to program)

  24. Picaxe Manuals & Tutorials • 110 Introduction (chip types [8-40 pins], and pinouts) • 279 BASIC Commands (complete language reference) • 46 Interfacing (using input and output devices) • 60 Flowcharts (simulate and create code programs) • 35Blockly (simulator using drag and dropblocks to program) • 76,600 INTERNET is your best friend

  25. Your First Development Setup • PC with USB or RS-232 Port • Cable – RS-232 or RS-232 to Picaxe Interface (AXE027) • Integrated Development Environment (IDE) v6 • Prototyping board or solderless breadboard • 3 to 5.5-volt power source

  26. Your First Development Setup • PC with USB or RS-232 Port • Cable – RS-232 or RS-232 to Picaxe Interface (AXE027) • Integrated Development Environment (IDE) v6 • Prototyping board or solderless breadboard • 3 to 5.5-volt power source • And This for every circuit….

  27. The Solderless Breadboard

  28. The 50% Solderless Breadboard

  29. Inputs, Assigned to Variables • Variables are Bit, Byte, and Word • Bit = Single bit, 0 or 1 • Byte = 8 Bits • Word = 2 Bytes, or 16 Bits • Variable spaces overlap, 16 Word variables total • These variables hold the hi-lo values of the pins.

  30. Chomping at the BIT • w0 = b1 : b0 • w1 = b3 : b2 • w2 = b5 : b4 • w3 = b7 : b6 • etc... • b0 = bit7: bit6: bit5: bit4: bit3: bit2: bit1: bit0 • b1 = bit15: bit14: bit13: bit12: bit11: bit10: bit9: bit8 • etc...

  31. Pin Designations, a bit Goofy • Logical Pin vs. Actual Pin • Your 08M2 program will run on the 20M2 chip

  32. Project Idea Sources • Internet • Arduino for Ham Radio, by Glen Popiel, ARRL • More Arduino Projects… • CW Beacon and Foxhunt Keyer • Fan Speed Controller • Weather Station • RF Probe with LED (bar) Graph Display • Solar Battery Charge Monitor • On-Air Indicator (RF sensing) • Talking SWR Meter • Field Day Satellite Tracker

  33. Project Idea Sources • Internet – Google “picaxe design projects”, 242,000 hits • Arduino for Ham Radio, by Glen Popiel, ARRL • More Arduino Projects… • Az/EL Rotator Controller(Yaesu G5400/5500) • Lightning Detector (estimates distance) • CDE/Hy-Gain Rotator Controller (all new, not a re-fit) • Load Tester (battery, to 20A load) • Voice Memory Keyer (uses pre-recorded messages) • Yaesu FT-series Rotator Controller Interface (to CDR/Hy-Gain box)

  34. Primary BASIC Language Keywords • If Then Else • GOTO (a Label) • LabelName (the Label) • For Next • Do Loop • Gosub (a Label), Return • Pause • Input, Output (configure pins for I/O) • 120+ command keywords, 150+ non-command

  35. Why I like the Picaxe: • Lowest cost, especially if I fry one • Programming is in BASIC, with minimal add-on libraries • Don’t like the convoluted syntax of “C” • Ideal for small dedicated projects • Easy to upscale to a higher performance controller • Finally….

  36. Why I like the Picaxe • Lowest cost, especially if I fry one • Programming is in BASIC, with minimal add-on libraries • Don’t like the convoluted syntax of “C” • Ideal for small dedicated projects • Easy to upscale to a higher performance controller • Finally…. • The massive amount of information on the Internet!

  37. The End

  38. The End Beginning Mike Hembrey Mike.kv0oom@gmail.com

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