creating footprint pic16f877
With wiring veroboards you want to be sure that all connections are correct and that there is no short-circuit(s) problem ..
Enamalled wire is also good, but you need to be much more careful while using it ..
I am pretty sure in Singapore you can get insulated wire, which by all means is my preferred option ..
Critical components in a circuit determine condition(s) under which a circuit works ..
For example, if you use as pull-up resitors in digital applications (in most cases non critical components) 4.7kΩ, 10kΩ, or 2.2kΩ in 99.9999% circuits will work ..
From this perspective, if this potentiometer is 4.7kΩ or 10kΩ, linear or logarithic, it really doesn't matter, and it doesn't change the fact that this circuit will work; sometimes, however, logarithmic pot will be just more convinient for you (than a linear one) to adjust something ..
Regards,
IanP