Stormbringer

I've done this for a couple of 800 machines and am pretty happy with the results.

I have a working 800 hitec keyboard. Would like to trade it for a couple of bad misumi's with all the keycaps just bad mylars....

I've done a couple of these now and whipped up a quick spacer.... wedge.stl

Hey, sorry to necrobump but I have a FlashROM99 that I bought years ago and just recently got around to trying out. It's ehibiting the same 4.5v on the 3.3v line for the SD card reader. The Amazon listing you posted no longer is in stock. do you have another source for a replacement SD reader?!?!

I was going to 3d print some spacers but just screwed it in with the original screws until it rests on the sides of the keyswitches. The bottom PCB should rest on the shield with the cable in between. Seems pretty stable in my 2 800's that I did. Do you have access to a 3d printer?

I've got 3 spares, when I ordered from JLCPCB I got 5 of em... maybe minimum order? I don't recall. Anyhow, they were really cheap - prolly cheaper that me shipping you one using ups / fedex.

Man that looks good in black

could just get rid of the mylar... just sayin!

Any Pics or progress?

Sorry about the late reply. Thought I provided the gerber files but I guess not. they are attached here now. The attachment contains the gerber files needed to print the board and the kicad files as well. You can have these made for fairly cheap. Again, I used JLCPCB in the States (Illinois) and it was around 30-35 bucks shipped for 5 of em. Plus the cost and wait on the keys. which you can source easily on aliexpress. I provided one link earlier. So, no need to wait for me to provide kits. go for it! I will say that I should have rotated the keys by like 1%. Adjacent keys slightly "bump" into one another on the corners. I just nipped both sides with cutters to make soldering easy. the plastic around the corners on the keys aren't support but there just to square them off. The boards worked well for me so I ordered more keys to replace my working 800 Mitsumi. I know the mylar will eventually fail. Atari800MitsumiKeyboardStormbringer.zip

FINALLY got my keys from the slow boat. Soldered them all in and it works great! VID_20220104_135844.mp4

To credit Multifarious Industries, who's original design this is based off of, his PCB lined up with MOST of my keys and the mounting holes. I needed to rotate the keys to follow the angled plungers and alter the placement of a couple keys. Also needed to change the footprint from cherry to the kailh profile.. Short story long, I'm sure the mounting holes will line up. I've never seen the bottom keyboard portion of the Hi-Tek so I do not know if there is a "plunger" to smack down on the key switches. I will say that the feel of the Mitsumi is pretty damn sweet. To the point that I will be converting all of mine, working or not.

I've had it with trying to get the Mitsumi mylars to work in my 800's. I know some people are trying to produce a replacement but this to me seem like a better long term solution. Using a PCB and kailh low profile switches. it feels good to me at least. I'm no keyboard snob, however. Seems damn satisfying with the tactile feedback. Might need to find a spacer that will fit between the pcb and the upper shell/keyboard but from my testing works without em.. Just haven't found anything off the shelf(I admit I haven't looked either). I'd hate to have to print something. that means days fiddling around with the 3d printer. I like this solution because it uses the keyboard frame so you don't have to monkey around with printing adapters or deal with wobbly keys. About $80 bucks in parts too. Bought a sample pack of switches on amazon for testing. Ordered the rest of the switches from: https://www.aliexpress.com/item/32838369089.html The PCB I had made from JLCPCB. PCBWay must have stock in shipping companies.... VID_20211215_132432.mp4 VID_20211215_134412.mp4

To my chagrin I have not read the 100 pages on this thread. I've read the last couple. Is there a place I can get on a waiting list? I see the http://ltoflash.leftturnonly.info/ site but would rather not jam up this guys email if there is an official waiting list I can sign up for.

400 incognito would be awesome. My first computer will get an upgrade