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Black boxes

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Project by Dutchy posted 11-27-2017 06:12 PM 1010 views 7 times favorited 13 comments Add to Favorites Watch

I made two small black boxes with a digital tachometer inside. One is for the lathe and equipped with a battery and one is for the drill press and has a AC/DC transformer for power supply. The boxes are made from baltic birch and painted with a black spray lacquer.

Below some more pictures.

Thanks for watching

-- https://dutchypatterns.com/





13 comments so far

View LittleBlackDuck's profile

LittleBlackDuck

1301 posts in 653 days


#1 posted 11-27-2017 08:32 PM

That sounds like a simple but great idea.

How do you calibrate the sensor to measure RPMs? I’m guessing that the RPM is dependant on the diameter of the spindle being measured.

-- If your first cut is too short... Take the second cut from the longer end... LBD

View Dutchy's profile

Dutchy

2551 posts in 2001 days


#2 posted 11-27-2017 09:01 PM


How do you calibrate the sensor to measure RPMs? I m guessing that the RPM is dependant on the diameter of the spindle being measured.

- LittleBlackDuck

No calibration is needed., and it is reasonably accurate. There is a magnet on the spindle and the rotations are counted.

-- https://dutchypatterns.com/

View robscastle's profile (online now)

robscastle

4491 posts in 2037 days


#3 posted 11-27-2017 11:19 PM

Hey Alex would you like me to buy you one for Christmas so you can play with it?

-- Regards Robert

View LittleBlackDuck's profile

LittleBlackDuck

1301 posts in 653 days


#4 posted 11-28-2017 12:08 AM



Hey Alex would you like me to buy you one for Christmas so you can play with it?

- robscastle


Thx for the offer rc, but I have been racking my brain all day and cannot see where I could use one. My drill press and lathe have variable speed built-in (with digital display) and the magnet would fly off my hand held drill.

I’d fit one to my hacksaw but now, with the new bandsaw, that would be a futile exercise.

-- If your first cut is too short... Take the second cut from the longer end... LBD

View smitdog's profile

smitdog

307 posts in 1938 days


#5 posted 11-28-2017 12:55 AM

This is exactly what I’ve been looking for to mount on my old Shopsmith. It’s got the variable speedchanger but there is no way to know the actual RPM that it is running. This will be perfect, thanks for the link!

-- Jarrett - Mount Vernon, Ohio

View kiefer's profile

kiefer

5579 posts in 2500 days


#6 posted 11-28-2017 02:02 AM

Love it ,need it great idea and very inexpensive .
How long did it take to come from Hong Kong ?

Klaus

-- Kiefer https://www.youtube.com/user/woodkiefer1/videos

View woodbutcherbynight's profile

woodbutcherbynight

3634 posts in 2242 days


#7 posted 11-28-2017 04:44 AM

Nice work. DO NOT put this in your luggage or carry on when going on your next flight. Unless you enjoy a body cavity search.

-- Live to tell the stories, they sound better that way.

View playingwithmywood's profile

playingwithmywood

350 posts in 1430 days


#8 posted 11-28-2017 04:58 AM



Love it ,need it great idea and very inexpensive .
How long did it take to come from Hong Kong ?

Klaus

- kiefer

depending on the seller and item some things arrive in like a week and a half no joke and others 2 months or so. The Average is about a month for me. Sadly much easier to deal with the over seas folk than to walk into a store and deal with awful Americans that 9 times out of 10 do not have any knowledge to help anyone anyway

the key when buying stuff it not to be 1 but at least 2 if not more
one of mine RPM readouts had part of the display not working so de-soldered it and put a new display on the board but that is why it is good to buy extras in case it does not work once it gets off the big big big boat

View Grumpy's profile

Grumpy

23183 posts in 3684 days


#9 posted 11-28-2017 11:31 PM

Dutchy , nice job and congratulations on your ‘Daily Top 3’ award.

-- Grumpy - "Always look on the bright side of life"- Monty Python

View Redbeardedwoodworker's profile

Redbeardedwoodworker

24 posts in 409 days


#10 posted 11-29-2017 08:31 PM

These are great. I have one of those Tach’s on my lathe, but it’s just sitting on top. Think I need to copy this!

View Dutchy's profile

Dutchy

2551 posts in 2001 days


#11 posted 11-29-2017 08:51 PM



Love it ,need it great idea and very inexpensive .
How long did it take to come from Hong Kong ?

Klaus

- kiefer

On the Ebay tab “payment and shipping” you can find the estimated time.

-- https://dutchypatterns.com/

View Dutchy's profile

Dutchy

2551 posts in 2001 days


#12 posted 11-29-2017 08:51 PM

Thanks all for responce.

-- https://dutchypatterns.com/

View crowie's profile

crowie

2030 posts in 1784 days


#13 posted 11-29-2017 10:05 PM

Another clevr use of the current technology for retro-fitment…well done Dutchy

-- Lifes good, Enjoy each new day...... Cheers from "On Top DownUnder" Crowie

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