Can someone with an understanding of electrics/electronics let me know if I've done good or bad on the following, please.
Its to do with making up a gauge with spare parts.
I'm using an old ultra cool and groovy LED marine fuel gauge from the 70's and wanted to turn it into an air temp gauge.
Using the only air temp sensor I had (r21??), the gauge read on an inverse scale to my needs, unless I set the pots out of range, whereby it had a little 'C' as the first digit and it then read the right way (temp rise = numbers getting bigger). The 'c' error bit on the display is a ripper bit of luck because I want celsius anyway.
But it was still out of range of the pot control so I grabbed my only bit of spare electronic hardware, a 1k resister left over from an ignition mod the other day, and bridged the signal wire to earth,
Amazingly with this resistor in line the ranging of the sensor and the gauge seemed to be spot on, and as linear and repeatable as is needed, so I'm pretty smug if this is an acceptable way to fiddle with electric signals which I obviously only just understand at the most basic level.
Have I committed any major mistakes in need of remedy, or is this an acceptable thing to do to a circuit???
SHould I be buying a fire extringuisher sooner than later???