Interesting new kickstarter – Pi on a PCB in a speccy!

Back a few years ago, I ventured into making my first PCB in over 2 decades. it was motherboard to hold a raspberry pi zero, and fit within a zx spectrum case.

it was inspired a little by an article in MAGPI magazine by a Mr P J evans.

I did kind of goof it up a bit, so relegated that to the ‘ideas to do in the future’ drawer

Whilst perusing Kickstarter today, I found this –

https://www.kickstarter.com/projects/hermitretro/hermit-retro-zx-spectrum-board?ref=thanks-copy

The Hermit Retro ZX Spectrum Board

A custom board for original and reproduction ZX Spectrum cases powered by a Raspberry Pi Zero and the Fuse emulator

So I backed it!

Have a look 🙂

it’s a far more elegant solution than I came up with.

MGN12H crappy linear rail bearing blocks

What’s more sensible than spending $9USD on a basic, possibly non working chinese no-name bearing block?

……..Spending hours and a few quid trying to do ’em up!

Parts I’ll need…

  • 3/32 Drill Bit (or possibly 2.4mm if it needs some play) …………..[edit, turns out a 2.4mm is too small! Looks like 2.5 is the go]
  • 3/32 Ball bearings (bound to loose a few)
  • Something to drill with
  • something to clamp down the carriage without damaging it

After a few minutes with the calipers and Tinkercad, I give you………. Continue reading “MGN12H crappy linear rail bearing blocks”

Chinese ‘cheap’ clone linear rails MGN12 Beware and a teardown

The Cheapy ‘Hiwin’ clone rails and blocks arrived a while back and they haven’t really dissapointed. By that, I mean, I kinda got what I was expecting. Still, only a small premium paid and 3 workable carriages / rails……

Continue reading “Chinese ‘cheap’ clone linear rails MGN12 Beware and a teardown”