Testing 1, 2, 3, testing, testing…

Mike Hembrey WCF Technical Specialist KV0OOM Picaxe JumpStart Mike Hembrey WCF Technical Specialist KV0OOM

Microcontroller, not microcomputer Can perform many tasks Wordprocessing Spreadsheets Video editing Controlling CNC machines Digital communications

Microcontroller, not 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

Microcontroller Several Languages Assembler or Machine “C” BASIC

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

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

Are you smarter than a 9th grader?

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

$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)

More computing power?

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

More computing power? Still want to stick with BASIC to reuse code? Picaxe 40X2 Chip, faster and more pins Coridium ARMbasic (compiled) Parallax BASIC Stamp (educational) MikroElectronica Mikro BASIC (PIC Clicker)

Picaxe is an Input/Output Device

Picaxe is an Input/Output Device

Picaxe is an Input/Output Device

Picaxe is an Input/Output Device

Picaxe is an Input/Output Device

Picaxe is an Input/Output Device

Picaxe is an Input/Output Device

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

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

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) 35 Blockly (simulator using drag and drop blocks to program)

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) 35 Blockly (simulator using drag and drop blocks to program) 76,600 INTERNET is your best friend

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

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….

The Solderless Breadboard

The 50% Solderless Breadboard

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.

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

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

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

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)

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

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….

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!

The End

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