Author Topic: Low Cost Programmable Decade Resistor for Prototyping Convenience  (Read 15184 times)

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Offline gerrysweeney

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Hi All,

I recently published an article on my blog where I have created a simple low cost programmable decade resistor.  One of the readers suggested that the project deserved a new thread on the EEVblog forum so here it is.  It serves a specific need and I did try quite hard to find something I could buy easily and quickly before embarking on making something myself.

I was not sure how interesting the project was going to be but I wanted to get some made by machine which meant I had to make a reasonable quantity so I made 200 of them and I put them up on e-bay for sale. 

10% of the stock sold in the first hour (I guess thats all my friends then :-DD ) so I suppose there is some interest.  My goal was to make something that was both useful and cheap enough to serve the EE community.  The cost point was met by making enough to justify the pick and place setup, probably should have made 1000 or so but this was just a toe-in-the-water exercise.  I will make another batch if the interest remains. 

Please let me know what you think.

http://gerrysweeney.com/seven-decade-programmable-resistor-a-low-cost-solution/

Thanks,

Gerry

Offline casper.bang

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Re: Low Cost Programmable Decade Resistor for Prototyping Convenience
« Reply #1 on: July 01, 2013, 07:11:28 AM »
Cool, small and cheap... just ordered one. Good luck with the project!

Online fpliuzzi

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Re: Low Cost Programmable Decade Resistor for Prototyping Convenience
« Reply #2 on: July 01, 2013, 07:13:37 AM »
Gerry,
I just ordered one of your Programmable Decade Resistor devices for my bench. Very clever design. I also built a few of the versions that utilize thumbwheel switches last year. They work fine but take a bit of time to construct.

Regards,
Frank

ps, I enjoy your informative videos too.


Offline gerrysweeney

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Re: Low Cost Programmable Decade Resistor for Prototyping Convenience
« Reply #3 on: July 01, 2013, 07:17:27 AM »
Hi Frank,

Thank you for buying one, I am glad you like it. One of the things I always find is simple is often best. While it does not address every ill, it is a solution to the problem I often run into so I am glad I am not the only one.

Thanks for watching the vids too, very much appreciated.

Gerry

Offline gerrysweeney

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Re: Low Cost Programmable Decade Resistor for Prototyping Convenience
« Reply #4 on: July 01, 2013, 07:18:06 AM »
Cool, small and cheap... just ordered one. Good luck with the project!
Thank you Casper, much appreciated.

Gerry

Offline dr.diesel

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Re: Low Cost Programmable Decade Resistor for Prototyping Convenience
« Reply #5 on: July 01, 2013, 07:42:04 AM »
I had to have one as well, very nice my friend.


Offline gerrysweeney

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Re: Low Cost Programmable Decade Resistor for Prototyping Convenience
« Reply #6 on: July 01, 2013, 07:44:13 AM »
I had to have one as well, very nice my friend.
Thank you sir! Very kind.

Offline Chet T16

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Re: Low Cost Programmable Decade Resistor for Prototyping Convenience
« Reply #7 on: July 01, 2013, 07:46:52 AM »
One for me too. I've been looking out for a reasonably priced decade box but this suits my needs perfectly, very nice
Chet
www.chet.ie - projects/electronics blog
BSc Engineering Science - Electronics
Studying ME Computer and Electronics

Offline gerrysweeney

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Re: Low Cost Programmable Decade Resistor for Prototyping Convenience
« Reply #8 on: July 01, 2013, 07:49:57 AM »
One for me too. I've been looking out for a reasonably priced decade box but this suits my needs perfectly, very nice
Thank you Chet, glad you like it.

Gerry

Offline Selectech

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Re: Low Cost Programmable Decade Resistor for Prototyping Convenience
« Reply #9 on: July 01, 2013, 07:55:20 AM »
I just got a pair, too handy not to have for the bench. Thanks

Offline gerrysweeney

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Re: Low Cost Programmable Decade Resistor for Prototyping Convenience
« Reply #10 on: July 01, 2013, 07:58:27 AM »
I just got a pair, too handy not to have for the bench. Thanks
Thats great, thank you Dave.

Gerry

Offline Lightages

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Re: Low Cost Programmable Decade Resistor for Prototyping Convenience
« Reply #11 on: July 01, 2013, 08:09:35 AM »
I just ordered two! Nice little package. I will wait to see how long it takes to get to Chile!

Offline gerrysweeney

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Re: Low Cost Programmable Decade Resistor for Prototyping Convenience
« Reply #12 on: July 01, 2013, 08:12:40 AM »
I just ordered two! Nice little package. I will wait to see how long it takes to get to Chile!
Thank you. I have been told by a few people that things sent via post to South America can often *not* get to their intended recipient. Any suggestions on what I can do to minimise that? I could courier them but that will be pretty expensive I believe.

Gerry

Offline Lightages

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Re: Low Cost Programmable Decade Resistor for Prototyping Convenience
« Reply #13 on: July 01, 2013, 08:18:17 AM »
I have always received things shipped to me here in Chile. Sometimes it takes 3 months but everything has arrived eventually. Just send it normal post with a tracking number if you can. Thanks.

Offline gerrysweeney

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Re: Low Cost Programmable Decade Resistor for Prototyping Convenience
« Reply #14 on: July 01, 2013, 08:21:39 AM »
Will do, I am not a prolific ebay seller so I have no idea how all the nuances of the postal system works, I will get a tracking number if I can.

Gerry


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