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Forum Index : Microcontroller and PC projects : color video terminal
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f1fco Senior Member  Joined: 18/03/2012 Location: FrancePosts: 155 |
hello, this device, MicroVGA interface, will never be available : http://www.microvga.com/ is it a hope that Geoff can design a "new" video terminal with color output on VGA ? with escape VT100 codes for color, or the same of TeraTerm ? is it possible in a future time ? I am VERY interested Pierre, from Nimes, south of France 73s de F1FCO |
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| f1fco Senior Member Joined: 18/03/2012 Location: FrancePosts: 155 |
and also a suggestion for the actual ASCII video terminal : is it possible to have a blinking mode ? PRINT CHR$(27);"[5m"; REM Blinking Mode (Doesn't Work) Pierre. 73s de F1FCO |
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Grogster Admin Group  Joined: 31/12/2012 Location: New ZealandPosts: 9642 |
One approach would be to use a Colour Maximite as a colour VT100 terminal. This would probably be reasonably easy to do inside BASIC, but it would not support really fast baud-rates due to the interpreter overhead. However, that would allow you to drive a VGA screen in eight-colour mode, which would be enough to add at least some colour to your terminal. I expect it would be good for upwards of 100k Baud, but anything faster then that would probably be too fast for the interpreter to keep up with. I can't even remember much about the specs of the CMM now - it's serial baud-rate might be much slower then that as maximum, I would have to dig out an old PDF file to find out. However, that still offers some possibilities for colour VT100, if you don't want too many colours, and your baud-rate requirements are modest. I too was interested in the MicroVGA unit, but I was told a few years ago that that was a dead project(last updated in 2012) - I am surprised the website is still going..... Smoke makes things work. When the smoke gets out, it stops! |
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MicroBlocks Guru  Joined: 12/05/2012 Location: ThailandPosts: 2209 |
There are a few boards on the market that offer HDMI and run a linux distribution. For about 9-25US$ it would then be possible to have a full colour VT100 terminal. I'll bet there is a terminal program available for linux. Microblocks. Build with logic. |
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| robert.rozee Guru Joined: 31/12/2012 Location: New ZealandPosts: 2447 |
microblocks is right. for example, a raspberry pi zero has: 1. hdmi out, 2. a usb port you can connect a keyboard to, 3. TTL serial port on the I/O connector, 4. supposedly costs $5. plus cables. one can get away without a GUI, and just drop straight into a console screen that runs minicom or similar. one such setup for linux (on any old 386 laptop in this case) is here: http://www.asashi.net/pages/pitux.html cheers, rob :-) |
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| JohnS Guru Joined: 18/11/2011 Location: United KingdomPosts: 4071 |
I paid £4 for a Raspberry Pi Zero. They're $5 in (say) USA I gather. Yes you need cables. Also PSU and uSD card to boot from. Use HDMI if you wish. There are multiple "terminal" programs, such as minicom, and you should be able to set some variant of VT100 / VT10x. However, it'll use a bit more power than a minimal MM system I think. There again, available immediately. John |
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| robert.rozee Guru Joined: 31/12/2012 Location: New ZealandPosts: 2447 |
an LCD screen (15") will draw a reasonable chunk of power anyway, i'm guessing the requirements of a RPi (something a tad under 200mA as i recall) will be a fraction of this. bearing in mind that with no GUI the processor clock can be throttled back considerably. hdmi cable from ebay for a couple of dollars. power (5v) 'borrowed' from the monitor if possible. a better setup might be a surplus netbook, dump the HDD and replace with a CF card connected via a SATA adapter. battery not needed, just run on the AC adapter. cheers, rob :-) |
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| MicroBlocks Guru Joined: 12/05/2012 Location: ThailandPosts: 2209 |
Another option is one of those HDMI sticks with android on it. You would need an esp8266 on the microcontroller side to be able to reach it over wifi. You could then use any tv/monitor as a terminal. Microblocks. Build with logic. |
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| BobbyMac Newbie  Joined: 24/07/2016 Location: United StatesPosts: 1 |
http://www.microvga.com is located in the Czech Republic. I don't think you will ever see anything coming from there. |
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