I'm trying to build a water tank depth sensor that logs measurements over time. The first thing I need to do is get the pressure sensor circuit working. I'll then hook it up to an arduino and do the rest. I've got 30 years of experience in software but I can't get this circuit to work. I'm using the simplified circuit here:
http://cache.freescale.com/files/sen...f?fsrch=1&sr=1
I really have no idea on what is wrong. I've built it on a breadboard and gone over it 100 times. Perhaps I haven't translated from schematic to physical circuit correctly. Perhaps I destroyed some component with static (I didn't use a wrist strap). I really don't know.
With software, I have a huge arsenal of tools to use to track down problems but I haven't a clue how to start when debugging hardware.
What I'd really like is to find someone with a lot of circuit building experience who can show me how to figure out what is wrong. The next time this happens, I want to be able to figure it out myself.
So, where do I find someone like this? I'm in the SF Bay Area and there is a place in SF called "Tech Shop" but they want $95/hour to provide help. I'm willing to pay but that is a little steep.
http://cache.freescale.com/files/sen...f?fsrch=1&sr=1
I really have no idea on what is wrong. I've built it on a breadboard and gone over it 100 times. Perhaps I haven't translated from schematic to physical circuit correctly. Perhaps I destroyed some component with static (I didn't use a wrist strap). I really don't know.
With software, I have a huge arsenal of tools to use to track down problems but I haven't a clue how to start when debugging hardware.
What I'd really like is to find someone with a lot of circuit building experience who can show me how to figure out what is wrong. The next time this happens, I want to be able to figure it out myself.
So, where do I find someone like this? I'm in the SF Bay Area and there is a place in SF called "Tech Shop" but they want $95/hour to provide help. I'm willing to pay but that is a little steep.