Not getting the full output from pins

[Bruce]

As Charles mentioned you would be better off going with the PIC as a low-side driver, but the best route would be to use some cheap low-side driver like a BS170 MOSFET.

Switching from one PIC type to the next may not always guarantee it's going to work from one to the next if it's operating border-line.

And a quick look at the relay datasheet does not show they have internal diodes. You will for sure want a flyback diode across those relay coils.

[Szczepaniec]

Unsolved is relative to my world. Until it makes sense in my pea brain, it is unsolved. However, it is solved now.

Thanks for all the help. I was unaware of the graphs posted here and when I went back to look for them I realized I had a preliminary datasheet for the 1827 that did not have them. I didn't even think to account for the internal resistance of the PIC when trying to understand why it wouldn't work.

Thanks for the catch on the diode Bruce. Thankfully the board was designed for a previously discontinued relay and a 1N4007 is installed for each of the relays. For some reason when I changed to the current relay I thought they had a diode installed. Luckily I never removed the clamping diode from the assembly instructions so they kept getting installed.

Thanks again for everybody's help.

Also, it does work as a low side driver.