Recent content by Apollonia

Oops! …should also have said and vice-versa - for example this allows a ImageWriter II or similar to be serially connected to a 128K/512K Mac.

5. May also be a Mini-DIN 8 RS422 to DB-9 RS422 adaptor (though the DE-9 connector may be the wrong gender for that - mine is 150 miles away ATM so I can’t check). This allows a Mac with a Mini-DIN 8 serial port to use serial devices designed to connect to a Mac 128K/512K/512Ke DB9 serial port...

Doh! My nearest logic board being inside an SE/30 I remembered it as a QFP not a PLCC. Thank you.}

Out of interest - asking as someone with very little experience - how would this type of IC be socketed? Some kind of pair adapter PCBs?

Ah, sorry… :(:confused:

I’ve just had 2 printed at JLC3DP (JLCPCB). Still on their way to me (no rush so I chose the economy delivery) so can’t comment on quality but the price was good and others who have used them seem happy.

While you would have to pry my AEK II(s) from my cold dead fingers, something like the MacWay keyboard linked off this forum post with a built in Wombat would be very tempting.

For anyone else coming to this thread post February 2025, the page linked here: Has moved. The new link is now: https://www.pdp8online.com/mfm/mfm.shtml (Hope I did that card link correctly🤞

You’re welcome and it is fully deserved. Oh dear, I feel another purchase coming on… 😉

Just found this thread while looking for something else and had to post. I bought a version 1.7 board from @WillJac’s Ko-fi shop earlier this year. It has been the most useful tool I have bought in a long time and a huge help as I work through a bunch of unhappy SE/30 logic boards. It’s been in...

Interesting video and helpful. I like his sense of humour: “…well …release the pressure.”

That is very useful, just the sort of overview I need. Got it. Like so much in any form of engineering there are trade-offs when choosing a component; you need to balance cost, availability, durability, failure modes and effects. There may be theoretically perfect solutions but they aren’t...

Thanks again, good to learn.

Thanks everyone, that’s really enlightening. I’ll add a new oscillator to the order as well. @zigzagjoe You guess correctly. After finding the exploded cap I got the DMM out and definitely +12v. As a pretty much electronic novice, what would be the pros and cons of organic polymer caps in...

Thanks, that’s very helpful. Now I’m off to Mouser….