[KOC62]

Yes, I agree with you, Al.

I also wanted to address the discussion regarding the question if the transformer could be eliminated for the zero crossing detect circuit - and it can. What the Arduino will do with this dectection input is up to the designer. However, I do suspect that this project will gravitate towards a phase angle controller, rather than a burst mode. But it may still be fun to try a burst mode controller.

Sometime ago I had thought of experimenting with a motor controller for my MasterCraft 2.5HP router and have it "crawl" real slow, yeah..., like a stepper motor. Then see what problems I run into, like overheating, or excessive current, poor torque, etc. Then to create a possible solution for each problem. Just to experiment even if I had no useful project for it. It was to be mainly an educational excercise. I still haven't done it yet, but this thread made me revisit the idea now that I bought some triacs for a light dimming project.

[Al_The_Man]

. However, I do suspect that this project will gravitate towards a phase angle controller, rather than a burst mode.

I understood the aim was for a PWM, originally?
I just mentioned the Triac because of the questions on the posted schematic.
Al.

[KOC62]

OK. I may not be up to speed yet. I didn't catch that.
I must re-read some of the posts again.... lol.

[koogar]

Might be an idea to stick with the original design at the start of the thread and advance from that, Since that is known to work well.

OSPID would be a good name

Its so easy to go off on a tangent with a million ideas and have the original goal stalemate.(group)

Cheers

Rupert

[timmyb199]

Agreed I am sticking towards original till working model. Waiting on bits


Go go OPID

[KOC62]

1) For my clarification, the schematic we are currently using is by straga from post #5?

2) The schematic from post #1 has an additional circuit consisting of a resistor network along with switches labelled START, SET, UP, DOWN, ESC that are not found in the post #5 schematic. Not used now?

3) What does the resistor - switch SW1 do in schematic from straga, post #5? The firmware suggests POWER ON. Is that for the 5V supply power? Or for the 120VAC/220VAC power? Not clear to me.

Thanks.

[koogar]

1) For my clarification, the schematic we are currently using is by straga from post #5?

2) The schematic from post #1 has an additional circuit consisting of a resistor network along with switches labelled START, SET, UP, DOWN, ESC that are not found in the post #5 schematic. Not used now?

3) What does the resistor - switch SW1 do in schematic from straga, post #5? The firmware suggests POWER ON. Is that for the 5V supply power? Or for the 120VAC/220VAC power? Not clear to me.

Thanks.

Yes i think most of use are working from Straga's Schematic/code.

The Schematic supplied by mrendu43 shows START, SET, UP, DOWN, ESC probably reserved for an LCD menu system

Switch 1 (SW1) (powerOn) seems to point to manually turning the motor power on, i have not bread boarded to the circuit yet .
And powerOn2 seems to point to an automated start from the CNC controller.

Maybe someone else could confirm this ?

Cheers

Rupert