Search found 55 matches

by AmitKumar171
Sat Nov 30, 2019 7:36 am
Forum: Hardware Interface Issues
Topic: Pitch error compensation in Kflop or KmotionCNC
Replies: 1
Views: 49

Pitch error compensation in Kflop or KmotionCNC

Hi tom, I am facing one error while cutting circle as i have told you earlier. I faced one issue that , i have a ballscrew pitch error of -0.01mm per 10mm travel, so if i have a travel of 1000mm then my error will be 1mm. so that error i have tested and it linear, i tried travelling 100mm then error...
by AmitKumar171
Thu Nov 28, 2019 4:58 am
Forum: C Programs
Topic: Understanding Backlash concept in initialization file
Replies: 3
Views: 74

Re: Understanding Backlash concept in initialization file

Hi tom,

Thanks for your reply.
steps and steps/second

Amount = 0.01 x 8128 / 25.4 = 3.2
Rate to move in 0.01 seconds = 3.2 / 0.01 = 320
Ok i got it, but what if i make this rate to a huge value 24000, then what will happen. ?

Waiting for your kind reply.
by AmitKumar171
Wed Nov 27, 2019 11:43 am
Forum: C Programs
Topic: Understanding Backlash concept in initialization file
Replies: 3
Views: 74

Understanding Backlash concept in initialization file

Hi tom , I am using init program for kflop all axes there is some amount of ballscrew backlash is there. How to adjust it in init file. ? and here is a portion of init file that is having backlash options. ch0->InputMode=NO_INPUT_MODE; ch0->OutputMode=STEP_DIR_MODE; ch0->Vel=10667; ch0->Accel=260000...
by AmitKumar171
Tue Nov 26, 2019 5:59 am
Forum: Hardware Interface Issues
Topic: Heater connected on Knozz Nozz FET is not working after some time
Replies: 3
Views: 132

Re: Heater connected on Knozz Nozz FET is not working after some time

Hi tom,

Thanks for your reply.
What voltage do you measure across the nozzle heater element?
I am measuring 11.89V at nozzle heater element.
What nozzle heater power supply voltage are you using?
I am using 12V nozzle power supply.

Waiting for your kind reply.
by AmitKumar171
Fri Nov 22, 2019 6:00 am
Forum: Hardware Interface Issues
Topic: How to wire a DC fan 12v to Knozz for speed control
Replies: 19
Views: 1507

Re: How to wire a DC fan 12v to Knozz for speed control

Hi tom, Thanks for the earlier replies. That transistor is only rated for 100ma. Ok got it i will get transistor that you told earlier for the connection of PWM. The resistor symbol marked "Fan" is the Fan not a resistor. I was talking about Rb. How to calculate it and in my case which one should i ...
by AmitKumar171
Fri Nov 22, 2019 5:55 am
Forum: Hardware Interface Issues
Topic: Heater connected on Knozz Nozz FET is not working after some time
Replies: 3
Views: 132

Heater connected on Knozz Nozz FET is not working after some time

Hi tom , I am using Knozz for powering up Bed heater as well as Nozz Heater for my printing head and bed respectively. I am using 1000k thermistor that is calibrated to reach a temperature of upto 285 degree C. And bed thermistor is also 1000k thermistor that is also calibrated for reaching temperat...
by AmitKumar171
Thu Nov 21, 2019 11:18 am
Forum: Hardware Interface Issues
Topic: How to wire a DC fan 12v to Knozz for speed control
Replies: 19
Views: 1507

Re: How to wire a DC fan 12v to Knozz for speed control

Hi Amit, I have checked the relationship of fan with voltage and current, its linear. Good You have said earlier that With a switching circuit the transistor is always fully on or fully off What does it mean ? A switching circuit is digital and switches on and off like a switch. An analog circuit v...
by AmitKumar171
Mon Nov 18, 2019 5:46 am
Forum: Hardware Interface Issues
Topic: How to wire a DC fan 12v to Knozz for speed control
Replies: 19
Views: 1507

Re: How to wire a DC fan 12v to Knozz for speed control

Hi tom, Thanks for the earlier reply. To control Fan speed you will need to pulse the fan on and off at some frequency and vary the duty cycle (% of time on) this is called PWM (pulse Width Modulation). If you have JP6 pins available a KFLOP Hardware PWM can be used to make things easy. How to do th...
by AmitKumar171
Fri Nov 15, 2019 5:29 am
Forum: Hardware Interface Issues
Topic: How to wire a DC fan 12v to Knozz for speed control
Replies: 19
Views: 1507

Re: How to wire a DC fan 12v to Knozz for speed control

Hi tom, Thanks for your reply. I have checked the relationship of fan with voltage and current, its linear. You have said earlier that With a switching circuit the transistor is always fully on or fully off What does it mean ? Can i use this circuit to control the fan and on off also using analog ou...
by AmitKumar171
Thu Nov 14, 2019 5:15 am
Forum: Hardware Interface Issues
Topic: How to wire a DC fan 12v to Knozz for speed control
Replies: 19
Views: 1507

Re: How to wire a DC fan 12v to Knozz for speed control

Hi tom, I have checked the link that you have sent. Bipolar (BJT) Transistor NPN 45V 2A 150MHz 2W Surface Mount SOT-89-3 https://www.digikey.com/short/p0f3p4 In the description of the item it is showing that, this transistor has 2w maximum power but what i need here is 4w (12V * 0.300A). Will the ab...