Just to preface: I'm quite a noob at EE and built only a couple of boards for the arduino but somehow I'd like to try to build a board using the TDC1000 and TDC7200 with a couple of piezos from here to measure the water flow through the main pipe that gets to my house. I thought about buying the eval board but I'm on mac os X and although I have a machine with some old version of windows running though parallel, it's just too much of pain to configure anything on parallel (probably due to the fact it's 4 years old running windows 7)
Now, on to my question: I was thinking following the recommended schematic here (figure 62 p52) but I'm not sure I understand what the clockIN pin on the TDC1000 is for. Does the TDC1000 need a RTC such as the DS1307 and connect the square-wave output from the DS1307 to the TDC1000 and TDC7200 CLKIN?
Looking at the schematic from the devboard ( from here) I was thinking putting a cap between the PGAIN and LNAOUT pins but was not thinking connecting the COMPIN and PGAOUT since it seems those are used to hook scope - Am I correct in my assumptions?
For the rest of the connection I suppose the SPI is as usual (SDO to arduino MISO, SDI to MOSI, SCLK to SCK - CSB I suppose can be connected to any analog pins on my moteino and used for slave select for SPI communication?
I will have a look at the code you have for the eval board to see how to configure the TDC1000 and the 7200 but does this look like something a beginner could try out? any info/advice you can share would be greatly appreciated.
thanks in advance!
X
