Author Topic: Arduino Nano serial control of parallel AD9854 Ebay module  (Read 2954 times)

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Offline moffyTopic starter

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Arduino Nano serial control of parallel AD9854 Ebay module
« on: March 12, 2017, 10:59:06 pm »
I purchased a AD9854 Ebay module expecting to control it by its serial interface. However the module designers had seen fit to enable only the parallel interface. It's a difference of about 16 pins vs 4-5 pins for the serial. There is also the issue of the 5v to 3.3v conversion from the Nano to the AD9854 module. So I designed a serial to parallel interface using a couple of 74AHC595 serial to parallel shift registers. The 74AHC version is 5v tolerant when run from 3.3v, and is also available in a 16 pin DIP package which meant I could use some vero board. By playing with the pin connections I was able to minimise the number of jumpers on the vero board.
I wrote some code for the Nano and it works quite nicely. I must say that the module seems to perform very well.

Connections between Arduino Nano and AD9854 Serial to Parallel Interface Board.

NANO            AD9854 Interface Board(AD9854_sp_sch.pdf)

A0               RST_5
A1               CLK
A2               /OE
A3               DATA
A4               /WD_5
GND               GND
 
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Offline hongselectronics

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Re: Arduino Nano serial control of parallel AD9854 Ebay module
« Reply #1 on: April 19, 2019, 01:31:11 pm »
Did you get the quadrature signals working on this module? I am very interested in seeing the code for this. I just got an AD9854 module, and I am pretty shocked by the lack of Arduino support for this amazing module. Especially given the fact that it is directly mentioned in Art of Electronics 3rd Edition.
 

Offline moffyTopic starter

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Re: Arduino Nano serial control of parallel AD9854 Ebay module
« Reply #2 on: April 19, 2019, 11:31:49 pm »
Yes I did get it working. I was able to set frequency etc. I'll see if I can look up the old code and post it here. I'll have to search for it a little.

The project is an Atmel Studio v 7.0
« Last Edit: April 19, 2019, 11:44:38 pm by moffy »
 


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