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LDmicro Forum - Using ADC value to create timer on delay |
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Using ADC value to create timer on delay (by Jason)
I want to use an ADC value to alter a timer delay.
My intention is to use a potentiometer to set a time delay period. ie. to run an operation for a pre determined time which is set by the potentiometer. Im working on a little homebrew project for a friend who wants to automate a bottle washer Any help or ideas would be most appreciated
(no subject) (by Chris)
What type of CPU/codegenerator do you use ?
(no subject) (by Jason)
I have not decided on a CPU yet,
I was not sure if a specific CPU was required to obtian the code i needed look forward to your reply J.
(no subject) (by Chris)
The generic recipe is this.
LDmicro export text no MCU assigned, 4.000000 MHz crystal, 100.0 ms cycle time LADDER DIAGRAM: || || || Xinput _ ATime || 001||-------] [------+----[OSR_/ ]----+--------------------{READ ADC}---- || || | | || || | _ | || || +----[OSF \_]----+-------------------{MASTER RLY}--- || || | || || Rinit_done | || ||-------]/[-----------------------+ || || || || || || || || || || {MUL Atime :=} || 002||-------------------------------------------{ Atime * 3 }--------- || || || || {ADD Atime :=} || ||-------------------------------------------{ Atime + 100 }--------- || || || || || || || || || || || 003||-----------------------------------------------------{MASTER RLY}--- || || || || || || || || || || Xinput [Atime >] {SUB Atime :=} || 004||-------] [------+----[ 0 ]-------------{ Atime - 1 }--------- || || | || || | [Atime ==] Youtput || || +---[ 0 ]----------------------------( )------- || || || || || || || || || || Rinit_done || 005||----------------------------------------------------------( )------- || || || || || || || ||------[END]--------------------------------------------------------- || || || || ||
(no subject) (by Chris)
As attachement.
(no subject) (by Chris)
With 100 ms cycle, this gives one interval between
10 seconds and approx 5 minutes or 1-31 seconds on 10ms interval cycle.
(no subject) (by Chris)
If you want simulate it.
Instead of setting the output Youtput, you can use the master relay if more actions are required.
(no subject) (by Jason)
Thanks Chris
much appreciated
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