Go Down

Topic: Calling all PCB designers.... (Read 2262 times) previous topic - next topic

cjdelphi

I just had a thought that should make any one of you a KILLING...

Shift Registers, cheap and friendly, simply offer customers a PCB breakout board which comes with an array of shift registers, on the breakout all there will be..

5v+
Gnd
Data
Latch
Clock

(And then unsoldered pads/holes... for each of the outs which the person at home can do themselves)

You could literally sell them using surface mounted or through hole, in boards of 2, 5, 10, you ship them off the breakout board, we as the end user get a shift breakout
and then start wiring up whatever we want...

You know how much time and effort you'd be saving people with something like this?..   XD

nickgammon

Especially if you daisy-chained, like, 4 together.

Like this, but 1000 times neater:

Please post technical questions on the forum, not by personal message. Thanks!

More info: http://www.gammon.com.au/electronics

cjdelphi

Maybe an optional out then such as the unl array transistors IC's to compliment the 7hc595 to give it a bit of power boost for higher powered applications.

maybe a breakout complete with resistor/led too?

graynomad

Sounds like an opportunity for a bright young lad, I'm thinking "Crossroads" :)

Maybe in modules that plug together and also have RA headers on a .1" pitch for breadboards.

______
Rob
Rob Gray aka the GRAYnomad www.robgray.com

Tom Carpenter

Something like this you mean?
https://www.sparkfun.com/products/10680
~Tom~

cjdelphi

#5
Jul 10, 2013, 12:19 pm Last Edit: Jul 10, 2013, 12:24 pm by cjdelphi Reason: 1
https://www.sparkfun.com/products/10680

exactly not like that...


I'm thinking of 2 types to be offered, a blank board with an array of drilled holes ready to drop the chips in... or buy it complete with chips, the idea being
you can link and daisychain them, that breakout board is kinda pointless.... boards with space for 5 registers or 10 registers.

billhowl

"Crossroads" had this board, 12 TPIC6B595 which are high power version of the 74HC595 with output ratings of 50 V and 150-mA continuous sinkcurrent capability.

12-digit, or 96 Bit, LED driver, using TPIC6B595. Bare boards, $5.  Kits, assembled boards, available upon request.

http://www.crossroadsfencing.com/BobuinoRev17/

graynomad

See, I told you he was the guy to do this :)

_____
Rob
Rob Gray aka the GRAYnomad www.robgray.com

cjdelphi

The design.....

Drop the atmega side of it and the power supply side to it.

Then having the pin of each shift register get put into seperate blocks from bottom
left of the PCB..

A little re-design and this would be a perfect breakout board....

cjdelphi

oh and have it designed for a 74hc595 .... (I got heaps of them)

CrossRoads

HC595's are pathetic for driving any kind of a load tho, 70mA/chip limit.
Populate it as you see fit.
I made up 5 pairs with 10 shift registers each board, the 2nd board only had the shift registers, to drive a non-multiplexed 5x20 display with it.
http://www.crossroadsfencing.com/BobuinoRev17/Prototype_in_action.MOV
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

Go Up