[neonixie-l] Looking for advice on shift registers

2012-04-01 Thread Eric1180
HI William, I am a realative newbie to programming so I think what I did would be easyer to understand. I have already done what your are asking for I have a arduino connected to 3x 595's for 24 Output pins also I wrote a code for it so it changes based on a RTC. It was for a art project where

[neonixie-l] Looking for advice on shift registers

2012-03-31 Thread Dylan Distasio
Hi all- I've been circling back to the nixie clock project I am working on that starts with a base kit of 6 IN-14s each with their own module that contains a PCB with a 74141 on it. I have never used shift registers before, but finally got around to some initial experiments driving one 74HC595

Re: [neonixie-l] Looking for advice on shift registers

2012-03-31 Thread John Rehwinkel
I will need three 74HC595s if I go this route (6xABCD, 8 registers per 595 IC). The techniques I had come across on the Arduino consisted of serially feed bits to the 595 until all 8 registers per chip were full. It would seem like I need to send 24 bits each second as the clock ticks.

Re: [neonixie-l] Looking for advice on shift registers

2012-03-31 Thread David Forbes
On 3/31/12 3:28 PM, Dylan Distasio wrote: Hi all- I've been circling back to the nixie clock project I am working on that starts with a base kit of 6 IN-14s each with their own module that contains a PCB with a 74141 on it. I have never used shift registers before, but finally got around to

Re: [neonixie-l] Looking for advice on shift registers

2012-03-31 Thread Adam Jacobs
Yep, if you're trying to bit-bang the SPI then you are definitely re-inventing the wheel. Look at Arduino sketches for other SPI devices and see how they do it there. I don't have any arduino experience so I can't be of much help either, but I've used the SPI port on the AVR many many many times