Noob needs help with M.O. LCD based Automotive Temp Gauge(s)
Posted: Sat Nov 20, 2004 11:49 pm
Please accept my apologies if I'm posting this question in the wrong forum.
In any case, I would like to configure a matrix orbital or other LCD display to indicate automotive temperatures and pressures at once on an LCD screen. I like the matrix orbital ones because they are canadian (no duty to pay) and because I have one picked out that would go perfectly with my dash board colors. I'd like to use screen number LK202-25-R
If I am not mistaken, most automotive electrical temperature and pressure guages are re-badged ohmeters. That is, the temperature/pressure sensor is either a heat sensitive or pressure sensitive variable resistor. A 12v+ current is applied to the gauge, and is then sent to the temperature/pressure sender which is installed in the engine block (ground/earth). Depending upon the resistance generated by the temp/pressure sensor , the gauge interprets the resulting variable resistance (in ohms) displays it as a specific temperature or pressure.
I'm told this is possible, but "would most likely require the use of a PIC, which requires a programmer and knoledge of the ASM programming language." I don't know what this means or where to start educating myself in this regard.
I have a basic understanding of electronics fundamentals as well as experience with IC's, soldering etc. Can anyone give me an idea as to whether this project would be possible using a Matrix Orbital LCD display, what would be involved, and whether a NOOB like me should consider undertaking it?
Thank you in advance for your thoughts.
Regards,
In any case, I would like to configure a matrix orbital or other LCD display to indicate automotive temperatures and pressures at once on an LCD screen. I like the matrix orbital ones because they are canadian (no duty to pay) and because I have one picked out that would go perfectly with my dash board colors. I'd like to use screen number LK202-25-R
If I am not mistaken, most automotive electrical temperature and pressure guages are re-badged ohmeters. That is, the temperature/pressure sensor is either a heat sensitive or pressure sensitive variable resistor. A 12v+ current is applied to the gauge, and is then sent to the temperature/pressure sender which is installed in the engine block (ground/earth). Depending upon the resistance generated by the temp/pressure sensor , the gauge interprets the resulting variable resistance (in ohms) displays it as a specific temperature or pressure.
I'm told this is possible, but "would most likely require the use of a PIC, which requires a programmer and knoledge of the ASM programming language." I don't know what this means or where to start educating myself in this regard.
I have a basic understanding of electronics fundamentals as well as experience with IC's, soldering etc. Can anyone give me an idea as to whether this project would be possible using a Matrix Orbital LCD display, what would be involved, and whether a NOOB like me should consider undertaking it?
Thank you in advance for your thoughts.
Regards,