bradgrier.com

Category: Lifestyle Technology

  • How long will a NiMH battery pack last in a NEC PC-8201 or PC-8201a?

    As I was converting NEC battery packs to be recharegable, I wondered just what the run-time of a battery pack would be. So I came up with is a simple BASIC program to run the computer battery down, and record the time that it dies and calculate the run-time. This is the story...

  • Vintage Computing: Saving data to an audio device

    Back when the early days of personal computing, you did your work on your computer and either printed out the finished work, or stored it to work on later. Early on, cassette tapes were the storage medium of choice as they cassette tape recorders were commonly available, and reasonably affordable. Some computer system did have…

  • Aloha to a Hawaiian TRS-80 Model 100

    Well, finally got a chunk of free time to get back to my ‘Mod­el 100 school’. My goal is to learn about these m100s through hands-on learning. A new friend (Hi Larry) sent me his ail­ing m100 to fur­ther my edu­ca­tion. Who knows? Maybe I can get it run­ning again — it’s a nice look­ing…

  • NEC PC-8201a Adventures – Part Three: Getting Rid of the Dirty

    NEC PC-8201a Adventures – Part Three: Getting Rid of the Dirty

    Wel­come back to part three of my res­tor­a­tion and adven­tures with an NEC PC-8201a vin­tage com­puter circa. 1983. Let’s get to it! Stripping Down It’s actu­ally not that grungy to look at. Sure, a minor scuff or two, but from the looks of it, this unit is actu­ally quite clean. So, let’s get it apart and get…

  • NEC PC-8201a Adventures – Part Two: Rebuilding the NiCad Battery Pack

    NEC PC-8201a Adventures – Part Two: Rebuilding the NiCad Battery Pack

    These were great batteries, 40 years ago. This was a good task to start on. It’d been years since I’ve done any ser­i­ous elec­tron­ics work, and my pre­vi­ous Ardu­ino pro­ject, while suc­cess­ful, reminded me just how much I’d for­got­ten about elec­tron­ics over the years. And my skills had mostly van­ished too. So a nice easy pro­ject was…

  • NEC PC-8201a Adventures — Part One: It’s here, now what?

    NEC PC-8201a Adventures — Part One: It’s here, now what?

    Back in the early-to-mid ’80s, per­son­al com­put­ing was find­ing it’s way. Desktop com­puters were becom­ing more vis­ible in smal­ler busi­nesses, but the work of com­put­ing still had to be done at the work­place. Port­able com­puters were really just shrunken down desktops — they were called lug­gables at the time. Then came the revolu­tion, as they say. …

  • Instructable: Arduino Keyboard Joystick Extender Box and Sound Controller Thing Using Deej

    Instructable: Arduino Keyboard Joystick Extender Box and Sound Controller Thing Using Deej

    Update Jan. 23, 2021: Looks like the Joystick circuit has failed as it no longer toggles the Mute function. Well, I wasn’t too happy with the initial wiring job so this may be an opportunity to update that. A while ago I developed an interest in Ardu­ino micro­con­trol­lers, and this is my first ‘actu­al’ project.…

  • The Waiting Followers

    The Waiting Followers

    (Char­ac­ter sketch and back­ground for a Dave Gross Call of Cthul­hu cam­paign: Hor­ror on the Ori­ent Express, 2016) The club was lively; a typ­ic­al Thursday even­ing at our usu­al retreat in Birm­ing­ham. When our sched­ules per­mit­ted, we traveled north to escape the din and bluster of Lon­don as the week ended. Benny Peyton’s Jazz Kings…

  • For 3d Printing, Levelling the Bed is Finicky

    So a week or so ago I tweaked some­thing on my print­er. Maybe it was ini­tial lay­er height. Maybe I adjus­ted a bed screw. Not sure, but all of a sud­den my prints would­n’t stick to the bed properly. Using the ‘paper drag’ meth­od of bed lev­el­ling ‘sort of’ worked. But it really was tri­al…

  • 3d Printing Terrain for tabletop games like Dungeons & Dragons

    Pretty cool what a little time, 3d Print­ing tech­no­logy, some cre­at­ive design work, and a spool of PLA will get you. I’ve been test­ing vari­ous dun­geon com­pon­ents to see how well they’ll work with our play style. And how good they’ll look once painted and finished. The crates above have yet to be fin­ished. Usu­ally, I…

  • Meco — Star Wars and Other Galactic Funk: Star Wars (HD Vinyl Recording) — YouTube

    Meco — Star Wars and Oth­er Galactic Funk: Star Wars (HD Vinyl Record­ing) — You­Tube.

  • Giorgio Moroder — Battlestar Galactica — YouTube

    Gior­gio Moroder — Battle­star Galactica — You­Tube.