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Pass around a few chips #1
board & batteries –
soldered version – programmed and ready to show to the audience
#2
Show small flashing crossing demo
unit on wood board #3
Pass around box of parts – 12
items – cost $10 max –less if you have a well stocked junk
box #4
NO DIRECT connection to 9 volts – 3 or 4 AA’s ONLY!
Comment on pin identification NOTCH on chip
Show cables (mouse, USB & DB-9) #5
PHANDERSON.COM has solderless development kit for around $20.00 (+/- depending
on cable / psupply)
Show & pass around programming cable
– can also be made from DB9 (from Hosfelt) and old computer wires
– if Internet available go to PICAXE.com and/or PHAnderson.com
Detailed review of schematic – note
pin 6 is “out1” and pin 5 is “out2” – note also
that the 22k & 10K to ground are necessary on any board, programmable or
not!
Reinforce using 5 volts or less – NOT 9 VOLT BATTERY! Define Ground! Some don’t know what it is.
Breadboard example + programming
cable + power source #6
Pass around flashing unit – note relationship between schematic and completed
circuit
Type in program and send to 08M – show lights flashing – OK
to copy/paste
??show simulation?? YES!
Modify program from previous slide and
send to 08M -
show changed behavior-
Note: to do this on the 7404 circuit additional parts
would be needed
OK to copy/paste
Note that “b0” is a variable to store count number –
SHOW
VARIABLES ON SIMULATOR!
SHOW ON SIMULATOR, TOO!!!
Expand to show variables, too!
Modify program from previous slide and
send to 08M -
show changed behavior-
Note: to do this on the 7404 circuit additional parts
would be needed
OK to copy/paste
Note that “b0” is a variable to store count number –
SHOW
VARIABLES ON SIMULATOR!
SHOW ON SIMULATOR, TOO!!!
Expand to show variables, too!
Add switch & resistor to solderless proto board
Discuss need for 10K pull up resistor to give positive shift from + 5 to
ground on button push & to protect against dead short if it were not there
Modify code and program 08M
-
demo and pass around display unit
on board with reed switch
#3
OK to copy/paste
Show crossing demo – need
batteries & sensors #7
Reference lighthouse that is operating in the room
0:48 to here @ 2008 ECLSTS
Mention that each PICAXE pin can only
handle 20 ma so the transistor is needed to deal with higher current devices
Discuss need for PWM for this project
& how it works
Minimal discussion of software – OK to copy/paste
Show Lighthouse bulbs on foam demo #9
Use Lighthouse board with switches on
side for motor #9 (there is no
#10 or is #10 the motor?)
Reprogram Lighthouse /w LEDs or any
of the other boards for Morse code
Show Morse code unit -
if time is good demo the
end-user-programmable Morse unit
OK to copy / paste
2006 NGRC – 43 min to here
Show and/or Pass Around custom board
without sensors now or after slide 31
Show circuit board – pass
around? #8
2:10
About 1:21 to end