POTD- PROJECT OF THE DAY: What Did You Make In Your Shop Today?

[Doug Gray]

Quick paying gig. Four auger drive shafts from 1 1/2" diameter precision ground 1045.
The keyway is for a chain coupling. Good fun that keeps me in inserts .

 

[f350ca]

Going to give raised garden beds a try, the garden was a flop this year. The beds will be 30 inches high, no more bending over to weed. lol So we sawed 1 x 15 Hemlock for the sides. Hemlock is quite rot resistant so should last for a few years.
Had 3 large logs, they produced 48 1x15s and 10 1x10s.
You can get a lot of lumber out of big logs but you sure work for it. I'd guess they weighed 8 or 900 pounds each.



Greg

 

[dkemppai]

Hemlock is quite rot resistant so should last for a few years.
Had 3 large logs, they produced 48 1x15s and 10 1x10s.

Hurry up and build them quick! I remember hemlock splitting when dry if driving a nail into it. Wet it seems to be fine...

 

[dkemppai]

Well, not exactly a project in the shop, but a project for the shop. Spent the day laying out a PCB for my ELS.

What processor are you using? (Looking at the layout, Teensy 4.1???)

Currently looking at a Clough42 ELS with modifications. I'd like to add Z position feedback into threading for a few added features.
Started looking at the Teensy 4.0 board as a possible controller also.

Dan

 

[WobblyHand]

What processor are you using?

Currently looking at a Clough42 ELS with modifications. I'd like to add Z position feedback into threading for a few added features.
Started looking at the Teensy 4.0 board as a possible controller also.

Dan

Teensy 4.1 with a 3.2" touch panel display. My board has connections for two DRO axes and the necessary buffers. Along with inputs for a rotary encoder, and outputs to the stepper motor driver. I have not written the control part for Z axis feedback, but my software is aware of the Z and X positions. PCB is being fabbed now. (Allegedly 28% complete, whatever that means!) PCB dimensions are 95.5mm wide x 98mm high. The display plugs into the PCB and is mechanically fastened. Have designed a fascia for the display, which fits the display well.

Non-PCB version is currently running. Could use some additional features added, which I will be working on soon. Right now getting stuff ready so I can assemble a board or two when the PCB's arrive in early October. Also working on the housing (box) with standard connectors for system hookup. Been keeping me busy lately. Have to wire in my lathe DRO's to the board, however, the DRO display is running for the two axes. Needs a little display work to be cleaner, though.

Currently at 25 imperial threads, 21 metric threads, 9 imperial feeds, 10 metric feeds, all easily viewable and selectable on the touch screen. Everything seems to work so far, but needs a little cleanup in the software in a few places. Cut some 40 TPI and 16 TPI threads in steel with no drama. The other pitches seem to be working, but haven't verified them with pitch gauges.

 

[dkemppai]

Teensy 4.1 with a 3.2" touch panel display. My board has connections for two DRO axes and the necessary buffers. Along with inputs for a rotary encoder, and outputs to the stepper motor driver. I have not written the control part for Z axis feedback, but my software is aware of the Z and X positions. PCB is being fabbed now. (Allegedly 28% complete, whatever that means!)

Hmmmm...I'm assuming you're using the hardware encoder inputs on the Teensy?

Do you have a separate thread her on the current build? I may be interested in knowing more about the system/code etc.

 

[WobblyHand]

Do you have a separate thread her on the current build?

All 32 pages of it, so far. Check it out. https://www.hobby-machinist.com/thr...ad-screw-controller-using-a-teensy-4-1.99609/

Haven't published any of the code yet. Although the control of the stepper motor was easy, the display work was a pain in the neck. Just sheer drudgery. Got 4 months of solid software development into it. Started development May 1, 2022.

I am not using HW encoder inputs. I am using SW encoder inputs that use interrupts, because I found them far more flexible. HW encoders can only be attached to certain pins. I tested my encoder using an encoder stimulator (using another Teensy) and was able to easily handle over 200,000 edges per second. That's about 2900 RPM. If I recall correctly I sent over 2M edges and got them all. The DRO inputs are very slow compared to the spindle encoder, so I don't think I will have a problem with them at all. They are also interrupt driven, and merely update a volatile value. I shall soon see it all in action.

 

[GoceKU]

Today after couple of day break i continue organizing (cleaning) the big garage. A new addition, a 1t storage tank is going to take the place where the little fiat was sitting, i do need to make a stand to get it higher off the ground. To make that happen i had to fire up the Mi16x4, i dropped a battery and some fuel and fired on the first try, that engine was happy to be running, i drove it up the driveway higher then the drain grade and washed off the front where i had oil spills. Then come the hard part moving some of the rims, and pushing the little fiat with 3 flat tires. I used my big pry bar under the tire to get it moving and pump up the tires as they got accessible. I got it moved to the side bay, engine side front, in its case the rear end ( rear engined). This car has lots of work done to it like relocated radiator to the front, cage inside, but most of the work needs to be redone. I'm not sure if i'll do a thread about this car, it's not that common. Last thing i did was to drive the Mi16x4 back in its place, still need to cover it.

 

[extropic]

@GoceKU

What are you going to store in the IBC tote (1t storage tank)?

 

[GoceKU]

Rain water, for car washing for starters. Prices are higher than ever and monthly income the same, with so many cars this is one way to lower my expenditures.