5-11under

MY version of the LCD replacement screen is a couple of months away. If you can wait, you'll save yourself $10. Long story; not for this thread. Figure on 20 minutes to replace.

That's gold.

Good job on the second one.

This is as good as it gets, folks. Prepare to be amazed...

Oscar also has a store: https://nanochess.org/store.html

100% agree, except (or maybe especially): Damn straight! This project "is" important to, but not "that" important to me. From about May to about October, this was absolutely nowhere near the top of my personal priority list. In fact, I had less than zero interest in this project. Like it or not, that's the way it was. Fin. Back to our regularly scheduled broadcast... the local reps of the LCD company have contacted the China office, who is now working on dialing in the correct contrast.

It still makes no sense to me how someone else's words, someone who has nothing to do with either of the projects in question, seems to be affecting you so greatly. If you respect his words, then pay attention, but if you don't respect his words, then don't pay attention to him, and don't let him influence you. Personally, I listen to my family Doctor, but I pay no attention to Dr. Oz and Dr. Phil.

Hi everyone. Sorry for the huge delays here. It's been that kind of year... . Anyway, if you've sent me a PM over the past number of months (or if you send one in the near future), I'll be looking at and replying to those, by the end of this week, to see if you're still interested or not.

Sorry, I don't have time to reply to all this. Except... like I said, buy anywhere you want, but this really makes no sense to me...

Please stay on topic... and have fun... but not at other people's expense, of course.

Just a note that the sample Microvision has arrived at the China office of the local company I'm dealing with. We'll see how long it takes for them to figure it out... .

At the moment, that's the case. I've got a couple of ideas to improve that... let me think about the best way... .

Thanks everyone who had a hand or two in getting this going. It was a lot of fun.

Quick update: customs has cleared. That makes me feel better, after being in customs for about 48 hours.

Quick update: The sample Microvision, so the screen supplier can dial in the correct contrast, has been stuck in Customs in China for a day or so. Hopefully that will be cleared soon, and then hopefully delivered early next week.

As you can see, there's an inverter that is required when using EPROMs (for most masked ROMs, that's inside the chip). See your diagram above. Pin 20 on one has a bar (or a slash in this case), indicating the logic is inverted.

I didn't really have a link in mind. Really, the battery example works well, because the sources are isolated, without any common ground/connection. I just tried it, to make sure. That said, I haven't really thought about how it works in real life if you're trying to get 7.5V from the 9V and 1.5V battery, like how the batteries would drain. But, for the given example of a ColecoVision, if you have a 12V battery and a 5V battery, and if you connect the + of the 5 to the - of the 12, and call that your ground point, then the - of the 5 is -5V, and the + of the 12 is +12V (both relative to the ground point).

If all the supplies are isolated, you can do the addition and subtraction/reversals. For example with a 9V and 1.5V battery you can get + or - 7.5V or + or - 10.5V, depending on how you connect them. If they're not isolated from each other, something bad will happen. Don't try it unless you're absolutely sure. As mentioned, you can find bricks or supplies that provide the correct voltages with sufficient current.

Yes, that's the intention. It should be do-able. The supplier will be working that out when the test Microvision arrives there.

I just got notification that the "Delivery Standard" is 07-Dec, although when I made the shipment it said "Guaranteed" 19-Nov. We'll see what happens... .

Probably/mostly less drama in the changing landscape. I don't want people to commit to buying, and then later wishing they hadn't. (I know people have committed a year or more ago, but that's past the "statute of limitations" as far as I'm concerned). I'm also guessing that the minimum order will suffice for a decent period of time. I don't want to get ahead of myself, but if there's sufficient demand, more can always be purchased later. Looking at my previous post, and also post #1, people can pretty much figure out anticipated price and approximate leadtime, if all goes well, and then decide how to proceed.

A few things if anyone is still here... 1) First of all, sorry for the delays in the project, and lack of updates. In the least, I should have left a quick note. For most of the last half year or so, it seems the best I could do is to get the bare essentials completed, with no time or energy available for anything beyond that. I'll leave it at that. 2) The good news, from the customer side of things, is that it looks like there'll be a couple of options to getting your Microvision working properly again. That's a lot better than none. 3) Regarding working together, that might have worked a couple of months ago, but NRE (Non-Recurring Engineering) costs have all been paid out, and there's no real way to recoup those costs without ordering and selling some product. It's not likely that either of us want to pay for the other person's costs incurred so far. 4) I leave it up to you which product you choose to buy. It's not really a money-making project, so I'll be happy enough to cover the upcoming production costs. I'm sure these 2 projects won't arrive on the same day at the same price, so do what works best for you. That's all I really want to say about that. Moving forward, if you're still here... 1) I just sent out enough of the guts of a Microvision, so the supplier can get the contrast worked out. It's supposed to arrive there on the 19th. 2) I've thought about doing down-payment pre-orders, to have a good handle on quantities. I still have some time to decide, but I'll probably just buy the minimum order quantity that the supplier has set. These will be sold first-come first-serve, when I open up for orders. 3) As it turns out, the NRE costs are about equal to the production costs for the minimum order. The NRE costs have been paid a long time ago, so what I'm basically going to do is work out a price where if I sell half my stock, I'll be able to cover the production costs. If and when I sell the second half of the stock, I'll be able to make up for the NRE costs. 4) I'll know my final costs, and therefore the customer's price, when I've got the product in hand. That way I'll know if there's any customs/taxes/fees that I'll need to pay. If I set a price now, I'd have to sandbag it to help make sure all costs are covered and then some. The way it looks now is that the price will be at least as good as what's listed on the first page, although for the first wave of orders at least, I'll be removing the graduated pricing, so if you order 1 or 2 or whatever, you'll still get the best price. Shipping is extra, so that's where you'll be able to save money, if you want to order more than one at a time.

You need your own thread, because this thread is all about the status and comments regarding my project, and one day my orders, positive and negative feedback, and whatever else comes up. It's more confusing if both projects are in the same thread. I see you've already made a separate thread, so that's good.

Sounds great to work together, but from my perspective, the hard work is completed, and the Engineering costs are all paid. I have no reason to stop. Probably about the same for RB, I guess. Basically I just need to send this, they'll look at the voltages and the contrast control, be mesmerized by the 1979 technology, tell me when they've got the liquid or whatever figured out, and I make an order. I guess not all the hard work is completed. The last part, orders and mailing, will take some time. Likely when the time comes, I'll take a couple of days off of work to get all that moving. Oops... nice shadow on the pic... anyway, just push the button (to the right of the display in this picture) to change the display on the Mindbuster game.

BTW, I've got a spare Mindbuster and also Super Blockbuster. We can revisit around the time when the LCD screen is ready. Got any links to your AV game, or other projects?