using ADC ports

Question

is there a possebility to use the ADC inputs for controlling a servo? i try the micro servo a,d a HDD from ez robot. that didn work.

DJ Sures · Answer

This would work... Maps the adc's input between 0 and 255 to servo degrees 1 to 180. It'll work on d0 and ADC0.
 while (true) { &#160; // duplicate this line for other servos Servo.setPosition(d0, Utility.map(ADC.get(ADC0), 0, 255, 1, 180)); sleep(100); }

Nomad 6R · Answer

hi dj i wanna use two ez wheel servo's. looks like the script is for one servo?

Nomad 6R · Answer

oops i can duplicate for more servo's.got it thank you

Nomad 6R · Answer

got error  Start > Error on line 1: Missing String Quotes or Invalid Expression at index 0: while ( ( Done (00:00:00.0094850)

DJ Sures · Answer

That’s JavaScript I posted. I’ll never ever post ezscript

Nomad 6R · Answer

this what i have . while(0)(true) while(1)(true) { // duplicate this line for other servos Servo.setPosition(d0, Utility.map(ADC.get(ADC0), 0, 255, 1, 180)); Servo.setPosition(d1, Utility.map(ADC.get(ADC1), 0, 255, 1, 180)); sleep(100); }

DJ Sures · Answer

lol how did you get that from my example hehe. Here you go...
while(true) { Servo.setPosition(d0, Utility.map(ADC.get(ADC0), 0, 255, 1, 180)); Servo.setPosition(d1, Utility.map(ADC.get(ADC1), 0, 255, 1, 180)); sleep(100); }

Nomad 6R · Answer

haha i was not far off.but it doesn move the ADC0 servo. it move head d0 and d1. i wanted to use ADC0 and ADC1 alone

Nomad 6R · Answer

i forgot to tel i wanted to use continious servo's from ez robot on port v0 and v1

EzAng · Answer

Hi Nomad, how are you and how is your new robot? EzAng

Nomad 6R · Answer

hi ezang waiting for parts.do you have any idea how adc ports work with continious rotation?

EzAng · Answer

DJ example did not help? here is another like from site: https://synthiam.com/Community/Tutorials/Using-ADC-Analog-to-Digital-Ports-Commands-and-Controls-16283

Nomad 6R · Answer

oh does the adc only have 3 volts?

EzAng · Answer

did you read the link I put on?

https://synthiam.com/Community/Tutorials/Using-ADC-Analog-to-Digital-Ports-Commands-and-Controls-16283

Steve said: Step 1. About the ADC ports. There are 8 ADC Ports on the EZ-B v4 numbered "A0" to "A7" that you can connect devices like analog sensors. Each ADC port contains three pins...

Ground: (output) located towards the centre of the board.

VDC: (output) The centre pin, regulated at 3.3 volts.

Signal: (input) The outermost pin from the centre of the board which reads the voltage between 0 and 3.3 volts.

The ADC ports are Configurable at 8-bit (0-255) or 12-bit (0-4095) in software.

In an ADC control found in the ARC software, such as "Read ADC", ADC reading intervals can be selected from 100 ms to 60000 millisecond analog values.

Analog readings are from 1 to 255 (0v to 3.3v) in 8 bit mode, or 0 to 4,095 in 12 bit mode.

read on

I have to leave now - maybe Ptp or DJ can help, sorry

Nomad 6R · Answer

ezang yes i have the link thanks

Nomad 6R · Answer

Ezang you cant controle a servo with adc ports. thanks

EzAng · Answer

https://synthiam.com/Community/Tutorials/Using-ADC-Analog-to-Digital-Ports-Commands-and-Controls-16283/5 Using ADC (Analog to Digital) Ports, Commands and Controls. Step 5. Step 4. Controlling servos with sensors and ADC ports.

Nomad 6R · Answer

i saw it but you cant controle a servo on a adc port itself. i wonder would a LED work? on a adc port?

EzAng · Answer

Sorry for all the links, I personally never used ADC yet,  Read this link: https://synthiam.com/Community/Questions/Adc-Value-To-Servo-Movement-9783

EzAng · Answer

Seems like you need a script: Rich: # ADC to servo movement :loop $value=GetADC(ADC0) $position = $value/100 $position = Round($position,0) Servo(D1,$position) Sleep(250) Goto(loop) Or # / ADC to servo movement :loop $value=GetADC(ADC0) $position = $value/100 $position = Round($position,0) $position = Map($value, 54, 129, 180, 1 ) #adjusted first two values to read min/max read ADC project, 2nd two for direction (reverse 1 and 180). Servo(D0,$position) Sleep(250) Goto(loop)

Nomad 6R · Answer

i wanted to use contineous rotation servo's.

EzAng · Answer

from NallyCat - @Nomad 6R there is a tutorial on synthiam for that, have a look at " Using ADC (Analog to Digital) Ports, Commands and Controls." by Steve G. Looks like the one I already gave you - check EzAng

Nomad 6R · Answer

i have another question about adc ports.didn want to open another topic. is it possible to control a LED ,excample on/off ,with an adc port? i notest a led goes on from 3 volt.

Nomad 6R

Using ADC Ports

Upgrade to ARC Pro