A battery for the Acer Aspire One D250

The D250 comes witha 2200 mah battery. A 3 cell Li-Ion version, good for over 2 hours. Quite an achievement for such a battery and netbook.  There is a version with a 4400 mah but the price differencee is well over 70 euro, I paid 279 euro (delivered at home, www.modern.nl)  for my D250. And this will give 5 hours max runtime. And this may not be enough also . 2 hours are passing by quickly on the road. And batteries age, so in less than 2 years I would not be surprised to see it only last 1 1/2 hours. Lucklily there … Continue reading A battery for the Acer Aspire One D250

Acer Aspire One D250 D2D recovery and Windows 7

Enjoying my Acer Aspire One with XP! But Windows 7 is the way of the future, so I am tempted to upgrade, once I have a permanent W7 license for it.  EIT november 1st 2009: Windows 7 is now isntalled, read here) I am studying how to protect the D2D eRecovery facility. At boot time all Acers Aspire notebooks  have a D2D (disk 2 disk) restore facility, activated by pressing ALT-F10 at boot time. It works by having a special MBR and a hidden partition of 7 GB with a fresh OEM XP install. Installing Windows 7 will for sure change … Continue reading Acer Aspire One D250 D2D recovery and Windows 7

Delphi 7 and Windows 7, 8.1 and 10 32 and 64 bit.

As you can see in this blog, I recently started programming again in Pascal, eh, Delphi Object Pascal. The version I use (since it is the last version close to traditional Windows programming) is version 7. The best version to use, is the version that floats around as Delphi 7.2 Second Edition (search a torrent site) which is a trimmed and bugfixed small package. Of course this package runs fine on Windows XP. But how on Windows 7 (and 8!)? This is how I got it to work. Installation Make sure you run this as administrator, you will need the … Continue reading Delphi 7 and Windows 7, 8.1 and 10 32 and 64 bit.

Acer Aspire One D250

I have been thinking about it some time now,  what to take as computing device on the road. When I am traveling my faithful Ipaq (4350) serves me well, since 2006. Playing mp3, watching video, it all went well. Accessing internet via wireless if available. And will do so in the future, good in the airplane or train or bus for music and movies. With three batteries I can fill several hours, It is old by current  standards,  and replacement by a modern pda will be  expensive, since they became smart phones like Windows Mobile or Android based. But a pda/smartphone could … Continue reading Acer Aspire One D250

Delphi and electronics

A PC is such a dull device. With my other computers it is so much fun to control other devices, especially the 6502 SBC’s are great for that. What would be great is to let the PC talk to a SBC, with something faster than a serial port. Or have the PC control the SBC via that serial port with a program much more intelligent that hyperterminal. So I have been looking lately at ways to get something done with that. Pascal as programming language, Delphi 7 is what I have.  Good books, lots of information on the internet very … Continue reading Delphi and electronics

The Fabulous Logic Analyzer

This was fun! I have built the TFLA, the acronym for The Fabulous Logic Analyzer. Not my own design, here is the original design. The TFLA is a 8 port logic analyzer. Connected to the parallel port of  a fast PC, the sampling rate can reach 1 MHz, And that makes it usable for my 6502 systems! Also perfect to analyze serial transmission. I made some changes to the original design: Between the parallel port and the output of the buffer I added 1 K resistors. To protect  ports that are not bidirectional. Added a 100 ohm resistor between the input and  the … Continue reading The Fabulous Logic Analyzer

Conrad Retro Radio

Often I get question about the availibility of Philips kits like the Philips Pionier. And I have to disappoint the asker, those kits are not for sale anymore. Now I found a kit suitable for beginners, young and old,  or those who want to relive again those days of outting together a working radio: The Conrad Retro Radio. I have reported before on that kit and now I have built one. Full report on my Personal Interest’s site. It was fun to built, it plays quite acceptable for an AM radio. Is this the new Pionier kit? No, it is … Continue reading Conrad Retro Radio

Logitester, test digital circuits

I thought that I had found and published all articles I have writen for Radio Bulletin in the period 1979 to 1986. Alas, I did not. Yesterday I was looking for the Cosmicos articles by Bob Stuurman, and found in the august 1980 issue the Logitester article. Still have and use that tester, such a handy tool for digital circuits, often just as handy as my Hameg scope. Which reminds me, some kind of logic analyser would be nice too to have. Or built myself The Fabulous Logic Analyser. Anyway, here is the Logitester article, and this is how it … Continue reading Logitester, test digital circuits