Todays Project - What did you do today?

[EdK]

Rob,

That wee o-silly-scope is pretty   .

I checked the specs on that and not bad for $32. It's certainly adequate for a whole lot of stuff.  

Ed

[RobWilson]

Hi Ed , 

I think I payed about £15 from banggood , trace is a bit sketchy but it does have a hold function . All in all its worth the few quid  I spent on it  ,had fun putting it together and that what counts   . its been running for 4 hours now and the magic smoke is still confined lol .


Any idea what  duty means ?  info is a bit thin on the ground for this scope  

Rob

[EdK]

(11-30-2015, 04:58 PM)RobWilson. Wrote: Hi Ed , 
...

Any idea what  duty means ?  info is a bit thin on the ground for this scope  

Rob

Rob,

Duty cycle is the amount of time the signal is active in one cycle. So with a 20mS square wave for instance, if the time it's high is 10mS and the time it's low is also 10mS then it's a 50% duty cycle. If it's high for 15mS and low for 5mS then it's a 75% duty cycle. Clear as mud.  

Ed

[wawoodman]

(11-30-2015, 03:06 PM)RobWilson. Wrote: I knocked up a wee oscilloscope and scrolling clock
I enjoyed using the new Hakko FX 888D soldering iron ,it made soldering up the boards easy .
Rob

Looks like fun. I put my first Heathkit together in about 1972.

[Highpower]

(11-30-2015, 03:06 PM)RobWilson. Wrote: I knocked up a wee oscilloscope and scrolling clock   

Rob

Kewl! Nicely done Rob.

Now why haven't you knocked up a couple of proper enclosures for them yet?

[Mayhem]

Nice work Rob. Are you going to use it in finishing off your CNC mill?

[f350ca]

Started on the new to me bandsaw. Charlie's been stripping the old paint, and today I fabricated a belt guard. The metal on the face was from an old oil tank, so rusted I had to fill the surface with primer and sand it down to hide some of the pitts.

[RobWilson]

(11-30-2015, 05:08 PM)EdK Wrote:

(11-30-2015, 04:58 PM)RobWilson. Wrote: Hi Ed , 
...

Any idea what  duty means ?  info is a bit thin on the ground for this scope  

Rob

Rob,

Duty cycle is the amount of time the signal is active in one cycle. So with a 20mS square wave for instance, if the time it's high is 10mS and the time it's low is also 10mS then it's a 50% duty cycle. If it's high for 15mS and low for 5mS then it's a 75% duty cycle. Clear as mud.  

Ed

Clear as Ed 

All interesting stuff this electronics lark ,lots to learn   . Changed a few settings on the function generator (something else I need to learn how to drive )  to change the duty cycle .



so basically PWM ????  

[RobWilson]

(11-30-2015, 05:15 PM)wawoodman Wrote: Looks like fun. I put my first Heathkit together in about 1972.

Hi Mike , 

I bet your project was a lot more involved and took more skill to build .  


Rob

[RobWilson]

(11-30-2015, 05:52 PM)Highpower Wrote:

(11-30-2015, 03:06 PM)RobWilson. Wrote: I knocked up a wee oscilloscope and scrolling clock   

Rob

Kewl! Nicely done Rob.  

Now why haven't you knocked up a couple of proper enclosures for them yet?  

   

 give a bloke a break Willie ,I need to finish the CNC mill first   , maybe build a 3D printer  to make the case for it



Rob