Hello Everyone!
Christmas time is coming! So I created a mini Christmas tree decoration to be a gift. It has four modes:
- It plays a strip of lights rotating around the tree.
- It alternately plays the lights flashing on it.
- It selects a random (kind of) light to flash.
- It selects a random (also kind of) strip and then plays the LEDs on it one by one.
The modes are selectable by the switch 'S1' on the schematic. The switch 'S2' and the pot 'R11' are for adjusting the flash rate. You turn the pot and then press 'S2' and it loads a new flash rate to the current mode playing (it only adjusts the current mode playing). It uses the PICAXEs EEPROM, so once you turn it off it does not forget the mode it's playing or the flash rate for any of the modes (so when you start it back up it will be playing the same mode as when you turned it off). Here's the schematic:
and Here's the code:
I used 12 SMD 0603 blue LEDs for it. They are each mounted on a header that was soldered to the tree before the LEDs where put on. The tree is made of paper clips soldered together. And it has one SMD led on the top that is always on (D13). Here's some photos of it (more in gallery):Code:;***********************PIN_LAYOUT************************; ;* || Pin____Grid__No._GNo._||__Pin___Grid_No._GNo._|| *; ;* || C.0 -> column 1 01 || B.3 -> row 1 05 || *; ;* || C.1 -> column 2 02 || B.4 -> row 2 06 || *; ;* || C.2 -> column 3 03 || B.5 -> row 3 07 || *; ;* || C.4 -> column 4 04 || || *; ;*********************OTHER_PIN_LAYOUT********************; ;* || Pin____Function_______||__Pin____Function_____|| *; ;* || C.3 -> Mode switch || B.2 -> Set Speed || *; ;* || B.1 -> ADC || || *; ;*********************************************************; ;*_________________________Grid__________________________*; ;* 01 02 03 04 *; ;* LED---LED---LED---LED 05 *; ;* LED---LED---LED---LED 06 *; ;* LED---LED---LED---LED 07 *; ;* *; ;* Logic 0 selects each channel *; ;*********************************************************; ;**************************MAIN***************************; ;* The main code block checks the mode switch and stores *; ;* its last state in the on board EPROM. It also executes*; ;* the correct pattern. *; ;*********************************************************; main: ;this is to make all the variables equal zero (only done once) setfreq M32 ;set the PICAXE chip frequency to 32MHZ let b8=0 let b7=0 let b6=0 let b5=0 let b4=0 let w13=0 let w12=0 ;this is for the random command. So do NOT use b25 or b24 let w11=0 let w10=0 ;this is for the next random command. So do NOT use b20 or b21 let w9=0 let w8=0 let w7=0 let w6=0 let bit0=0 let bit1=0 let bit2=0 let bit3=0 let bit4=0 let bit5=0 let bit6=0 let bit7=0 let bit8=0 let bit9=0 let bit10=0 goto start start: do ;start endless loop if pinb.2=0 then ;if switch is pressed update playing time readadc b.1,b8 let w6=b8*2 if b7=0 then ;if playing the 1st pat write 1, WORD w6 ;write the ADC value to space 1 and 2 endif if b7=1 then ;if playing the 2nd pat write 3, WORD w6 ;write the ADC value to space 3 and 4 endif if b7=2 then ;if playing the 3rd pat write 5, WORD w6 ;write the ADC value to space 5 and 6 endif if b7=3 then ;if playing the 4th pat write 7, WORD w6 ;write the ADC value to space 7 and 8 endif endif high c.0,c.1,c.2,c.4,b.2,b.3,b.4,b.5 ;turn off all lights if pinc.3=0 AND bit10=0 then ;if the switch is pressed update pat playing inc b6 ;debounce with delay if b6=30 then let bit10=1 ;switch has to go to high before this is repeated inc b5 if b5=4 then ;all pats have been shown so reset let b5=0 endif write 255,b5 ;write the pat number to play to the EEPROM let b6=0 endif endif if pinc.3=1 then ;this will complete making sure the switch goes back to let bit10=0 ;high before repeating that code above endif read 255,b4 ;find out what pat to play if b4=0 then let b7=0 ;this tells the ADC thing above that pat1 is playing read 1, WORD w6 ;read the value from the 1st and 2nd space to w6 gosub pat1 endif if b4=1 then let b7=1 ;this tells the ADC thing above that pat2 is playing read 3, WORD w6 ;read the value from the 3rd and 4th space to w6 gosub pat2 endif if b4=2 then let b7=2 ;this tells the ADC thing above that pat3 is playing read 5, WORD w6 ;read the value from the 5th and 6th space to w6 gosub pat3 endif if b4=3 then let b7=3 ;this tells the ADC thing above that pat4 is playing read 7, WORD w6 ;read the value from the 7th and 8th space to w6 gosub pat4 endif loop until b4=10 ;loop forever goto start ;**************************PAT1***************************; ;* This pattern plays a rotating strip of lights *; ;*********************************************************; pat1: if bit0=0 then ;get rid of back loop low c.0 ;turn on column 1 low b.3,b.4,b.5 ;turn on row one,two,and three inc w13 if w13<w6 then ;delay return endif endif let bit0=1;make sure it does not back loop if bit1=0 then ;get rid of back loop if w13=w6 then ;make sure not to reset count let w13=0 endif low c.1 ;turn on column 2 low b.3,b.4,b.5 ;turn on row one,two, and three inc w13 if w13<w6 then ;delay return endif endif let bit1=1;make sure it does not back loop if bit2=0 then ;get rid of back loop if w13=w6 then ;make sure not to reset count let w13=0 endif low c.2 ;turn on column 3 low b.3,b.4,b.5 ;turn on row one,two, and three inc w13 if w13<w6 then ;delay return endif endif let bit2=1;make sure it does not back loop if w13=w6 then ;make sure not to reset count let w13=0 endif low c.4 ;turn on column 4 low b.3,b.4,b.5 ;turn on row one,two, and three inc w13 if w13<w6 then return endif let bit0=0 let bit1=0 let bit2=0 let w13=0 return ;**************************PAT2***************************; ;* This pattern plays stripes rotating around the tree *; ;*********************************************************; pat2: if w13<w6 AND bit9=0 then inc w13 if bit8=0 then low c.0,c.2 ;turn on solum 1 and 3 low b.3,b.5 ;turn on row 1 and 3 let bit8=1 return endif low c.1,c.4 ;turn on column 2 and 4 low b.4 ;turn on row 2 let bit8=0 return endif if bit9=0 then ;make sure not to reset second players count let w13=0 endif let bit9=1 if w13<w6 then inc w13 if bit8=0 then low c.1,c.4 ;turn on column 2 and 4 low b.3,b.5 ;turn on row 1 and 3 let bit8=1 return endif low c.0,c.2 ;turn on column 1 and 3 low b.4 ;turn on row 2 let bit8=0 return endif let w13=0 let bit9=0 return ;**************************PAT3****************************; ;* This pattern randomly selects 1 LED to light *; ;**********************************************************; pat3: random w8 if bit4=0 then ;let w12=time ;seed random ;random w12 ;generate random number let w12=w8 let bit4=1 endif if w11<w6 then random w9 inc w11 if w12<=5461 then low c.0,b.3 ;select column 1 row 1 endif if w12>5461 AND w12<=10922 then low c.0,b.4 ;select column 1 row 2 endif if w12>10922 AND w12<=16383 then low c.0,b.5 ;select column 1 row 3 endif if w12>16383 AND w12<=21844 then low c.1,b.3 ;select column 2 row 1 endif if w12>21844 AND w12<=27305 then low c.1,b.4 ;select solum 2 row 2 endif if w12>27305 AND w12<=32766 then low c.1,b.5 ;select column 2 row 3 endif if w12>32766 AND w12<=38227 then low c.2,b.3 ;select column 3 row 1 endif if w12>38227 AND w12<=43688 then low c.2,b.4 ;select column 3 row 2 endif if w12>43688 AND w12<=49149 then low c.2,b.5 ;select column 3 row 3 endif if w12>49149 AND w12<=54610 then low c.4,b.3 ;select column 4 row 1 endif if w12>54610 AND w12<=60071 then low c.4,b.4 ;select column 4 row 2 endif if w12>60071 AND w12<=65535 then low c.4,b.5 ;select column 4 row 3 endif return endif let bit4=0 ;reset let w11=0 return ;**************************PAT4***************************; ;* This pattern makes it look like water drops are *; ;* falling off of the tree. *; ;*********************************************************; pat4: random w7 ;generate random number if bit5=0 then let w10=w7 ;let w10 = the random number once let bit5=1 ;make sure it only happens once per playing endif if w9<w6 AND bit6=0 then random w7 inc w9 if w10<=16383 then low c.0,b.3 ;select column 1 row 1 endif if w10>16383 AND w10<=32766 then low c.1,b.3 ;select column 2 row 1 endif if w10>32766 AND w10<=49149 then low c.2,b.3 ;select column 3 row 1 endif if w10>49149 AND w10<=65535 then low c.4,b.3 ;select column 4 row 1 endif return endif if bit6=0 then ;make sure it does not play the code above again let w9=0 endif let bit6=1 ;get rid of back loop if w9<w6 AND bit7=0 then random w7 inc w9 if w10<=16383 then low c.0,b.4 ;select column 1 row 2 endif if w10>16383 AND w10<=32766 then low c.1,b.4 ;select column 2 row 2 endif if w10>32766 AND w10<=49149 then low c.2,b.4 ;select column 3 row 2 endif if w10>49149 AND w10<=65535 then low c.4,b.4 ;select column 4 row 2 endif return endif if bit7=0 then let w9=0 endif let bit7=1 ;get rid of back loop if w9<w6 then random w7 inc w9 if w10<=16383 then low c.0,b.5 ;select column 1 row 3 endif if w10>16383 AND w10<=32766 then low c.1,b.5 ;select column 2 row 3 endif if w10>32766 AND w10<=49149 then low c.2,b.5 ;select column 3 row 3 endif if w10>49149 AND w10<=65535 then low c.4,b.5 ;select column 4 row 3 endif return endif let w9=0 ;reset let bit5=0 let bit6=0 let bit7=0 let w10=0 return ;*********************************************************; ;* <- END OF CTREE PROGRAM -> *; ;*********************************************************;
I cut down a perf board to fit the the bottom of the tree. Here's how I laid it out:
I hope this is useful to someone!
Dan
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