Dangerous Prototypes

In development => Project logs => Topic started by: matseng on June 30, 2013, 01:12:09 pm

Title: PAW12 - BB Prince
Post by: matseng on June 30, 2013, 01:12:09 pm
As you all might remember I previously tried to do one PCB/Project per week and  publish (http://http://dangerousprototypes.com/for.um/viewtopic.php?f=56&t=4892)  them here at DP.  I managed to do eleven project plus some extras earlier this year before the workload of my real job got in the way and put a temporary halt to it.

Well, I'll try to start the PAWs up again in a slightly different model. This time I'll not keep the every-Monday-send-to-Seeed timing so rigorously, but I'll do it whenever it seems reasonable.  I'll try to do something at about weekly or 10-day intervals.  And some boards will come from Smart Prototyping (http://http://smart-prototyping.com/index.php?route=product/product&path=59_60&product_id=142) instead of Seeed.

This PAW is a small utility board for your breadboard that have some of the most common things you need when building a microcontroller-based project on the breadboard. It's a small (2.5x1.5cm / 1x0.6”) PCB with a Power Led, a Reset button with a pullup and goes low when pressed, a Signal button with pulldown that goed high when pressed and two general Indicator Leds that are connected to ground via resistors.

[attachment=1]

It's a simple thing, but oh so convenient to have sitting in a corner of the breadboard ready to be used whenever necessary.

The schematics is embarrassingly simple but I show it here anyways :)

[attachment=0]
Title: Re: PAW12 - BB Prince
Post by: Bertho on June 30, 2013, 02:47:50 pm
It still amazes me that a few buttons and LEDs can be useful ;-)

Anyway, I do look forward to another round of PAW; maybe we'll get a brain-to-gadget interface out of the inspiration gathered from the series.

Well done matseng.
Title: Re: PAW12 - BB Prince
Post by: matseng on June 30, 2013, 02:54:32 pm
I sold nine of them on Tindie (http://https://www.tindie.com/products/matseng/bb-price-breadboard-utility-pcb/) during the first 8 hours after listing them.  So it seems like there are more than me that have problems inserting switches/buttons into a breadboard. :-)
Title: Re: PAW12 - BB Prince
Post by: Bertho on June 30, 2013, 03:24:39 pm
[quote author="matseng"]I sold nine of them on Tindie (http://https://www.tindie.com/products/matseng/bb-price-breadboard-utility-pcb/) [/quote]
But at that volume and price it will be hardly retirement funding :-)
Title: Re: PAW12 - BB Prince
Post by: matseng on June 30, 2013, 03:38:16 pm
Very true....  In this case I've marked them up almost x10 from the cost for the parts (since I purchase the generic parts in volume) and the postage ($0.95) covers the stamps,envelope and bags.  I really can't charge more for them with a straight face.  ^_^

But I'm not doing this for  a living or to save the earnings for a rainy day/year.  This is just for fun and if I can spread some of the stuff I do for fun to others for a reasonable low cost it feels good.  (And it keeps my wife happy to see that I actually sell some of the stuff that the courier companies and mail man brings home to me at a regular basis)

Currently I go to the post office and drop off a dozen or so letters twice a week, something that isn't too much of a hardship. If the volumes increases too much I might just call it a day and get out of the Tindie business  - or I raise the prices so I get no buyers :)
Title: Re: PAW12 - BB Prince
Post by: Bertho on June 30, 2013, 04:00:44 pm
[quote author="matseng"](And it keeps my wife happy to see that I actually sell some of the stuff that the courier companies and mail man brings home to me at a regular basis)[/quote]
That may be the best reason I heard in a long time. Keeping peace at home can be a challenge.

[quote author="matseng"]Currently I go to the post office and drop off a dozen or so letter twice a week, something that isn't too much of a hardship. If the volumes increases too much I might just call it a day and get out of the Tindie business  - or I raise the prices so I get no buyers :)[/quote]
That is not too bad. At least it is not a negative cash-flow business this way. You may be surprised what one will pay for a gadget. Sometimes I do not get it. At least, I never get the "hang" of the right price until I already set it too low. And then, for things where I think is worth it, it is always too high, sigh.
Title: Re: PAW12 - BB Prince
Post by: FourthDr on July 24, 2013, 05:53:55 am
Hi Matseng

Received my free BB Prince kit.

Here is the envelope (nice touch with the Darlek!):
[attachment=5]

Here is what came inside:
[attachment=4]
[attachment=3]

Here are the parts ready to be soldered:
[attachment=2]

And finally, the finished product:
[attachment=0]
[attachment=1]

Anyone else receive their kit? I'm going to use mine with some minimal Arduino circuits on my bread board along with the crystal module you made.

Thanks again
Title: Re: PAW12 - BB Prince
Post by: matseng on July 27, 2013, 07:15:35 pm
Quote from: FourthDr
Received my free BB Prince kit. Here is the envelope (nice touch with the Darlek!):
Quote
I felt that I just had to spice up the envelope a bit when I sent a letter to "Dr Who" :)

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