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Over the past year I have discovered a great way to control stuff.  It is the PICAXE micro controller.  They  are offered by Revolution Education Ltd, an England-based company that developed the 'bootstrap' firmware that runs on a Microchip controller.  The free program editor allows me to write control software in 'BASIC'.  The cost for these chips range from $3 to $10 each, based on the number of I/O ports you need.  I have 'run amok' having fun applying them to different home projects.  See above.  I am still working on some of these web pages and will complete them as time allows.

Here is an example of one that costs $3.45 from PH Anderson:


This is a comparative table:

PICAXE Type IC Size Memory
(lines)
I/O Pins Outputs Inputs ADC Data
Memory
Polled
Interrupt
PICAXE-08 8 40-110 5 1-4 1-4 1L 128-prog No
PICAXE-08M 8 80-220 5 1-4 1-4 3 256-prog Yes
PICAXE-14M 14 80-220 13 5 6 2 256-prog Yes
PICAXE-18M 18 80-220 13 8 5 3 256-prog Yes
PICAXE-18X 18 600-1800 14 9 5 3 256+i2c Yes
PICAXE-20M 20 80-220 18 8 8 4 256-prog Yes
PICAXE-20X2 20 1000-3200 18 1-17 1-17 0-9 256+i2c Yes
PICAXE-28X1 28 1000-3200 23 9-17 0-12 0-4 128+i2c Yes
PICAXE-28X2 28 1000-3200 x4 23 0-20 0-20 0-9 256+i2c Yes
PICAXE-40X1 40 1000-3200 32 9-17 8-20 3-7 128+i2c Yes
PICAXE-40X2 40 1000-3200 x4 32 0-26 0-26 0-11 256+i2c Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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