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July 31, 2007
about 7 years ago
I just powered this up yesterday (after letting it sit for a year) to debrick my embedded web server. It had bootloader 4.4 and firmware 5.10, but in the serial menu, JTAG was nowhere to be found. I tried flashing several different firmwares (from 5.9 to 6.2-beta, as well as 5.9 "extras" - per this article: http://dangerousprototypes.com/docs/JTAG), and nothing seems to enable JTAG as an option. Any ideas?
about 8 years ago
I'm no expert, but in my simplified understanding, a smaller speaker (at least this type) renders sound less accurately, especially in the low frequency range.
I think the reason for this, at least in part, is that as the physical size of the sound wave gets larger than the physical size of the speaker, the sound waves get distorted because they cannot be fully rendered with a small speaker.
So, your sound quality should be lower with a smaller speaker. How much lower-- I'm sure-- is debateable. I don't know if it is as simple as: your speaker diameter is 25mm, so the lowest accurately rendered frequency is 13720Hz; if it were 50mm, it would be 6860Hz? My gut says it's more complex than that.
News - Little Box Stores
about 8 years ago
Yeah... AFAIK RadioShack is the only place in Northern NJ that carries individual components. So in a pinch I have gone there to get odds + ends- resistors etc; but they are way overpriced on components, and as @BB said, they are more of a cell phone store these days. I've been to a few that had a knowledgeable staff, but they are few and far between.
News - Free Day 2012 is Under Wa…
about 8 years ago
Totally understood why it was necessary (I'm a programmer) and I'm pleased and very grateful to walk away with a prize-- thanks Nate. I participated in the first free day and though I didn't win then, I was still appreciative that SF was kind enough to give away free stuff. You guys could spend that money sponsoring other projects, but you are very generous to give it out to your customers. Your love of the amateur electronics community is one reason (of many) why I've found myself coming back here for years now.
News - High Altitude Balloon Pro…
about 9 years ago
This is so cool!
My gut says this is a stupid question, but I'm going to ask anyway!
Is there any way to "steer" the payload down while it's on the parachute? I'm imagining hooking up some large PC fans and using the microcontroller with PWM to guide the payload using GPS coordinates. Any ideas?
about 9 years ago
Hopefully this is helpful to someone: my review/getting started guide, and a networking tutorial for FEZ Domino.
News - Digikey Sort By Price
about 9 years ago
They definitely do... it's circled in this picture. Been using Mouser for the last 3 years; personally I like their part search better than Digi-key.
I received mine yesterday from GHI, and although it pains me to say so, this is an extremely powerful development environment. It actually piqued my interest in their more expensive development tools, like ChipworkX.
I did waste a lot of time getting everything started because (1) the link to Express C# now points to the 2010 version, which is not compatible with this product; and (2) I had to learn how to upgrade the firmware to make it compatible with the GHI framework.
Once you know which assemblies to reference (the e-book is very helpful in getting started) you can do very powerful things, very gracefully. Once I had the code for blinking an LED running, I was able to read an SD card and a USB Mass Storage device within about 10 minutes.
Debugging is also very straightforward.
I'm not sure yet how useful it is at 72MHz (specifically for networking), but I intend to find out.
It's definitely not as simple to get started as Arduino-- there is a ton of setup-- but then again, the power of what you can do with so little code blows Arduino out of the water.
about 10 years ago
The videos weren't boring, but they make it look like a lot of work to do something simple like blink an LED. As someone else mentioned, the savings of effort comes in when you're doing a much more complex project, like making an MP3 player or reading an SD card.
The issue is that there's a certain amount of "overhead" preparation that you have to do in any project -- linking in libraries, tweaking code -- but once that's done, it's easy to make the project as simple or as complex as you want. This is pretty common to the .NET environment in general, I think.
You can't really compare this and Arduino (it's like comparing a Ferrari to a Ford Focus: ARM is a much more powerful processor than AVR.) However, the great appeal to Arduino for a beginner is that doing simple things "feels" simple; whereas in a .NET environment, doing something simple sometimes feels like it's not worth all the effort. In the PC environment, I'll often find myself using ActivePerl or VBScript to do something simple like text file processing instead of starting a new .NET project.
Please read my post before you refute my comments. I clearly said "I'm not saying it's a bad product; I'd try it."
My conclusion of MS devel tools (not this product specifically) is based on the fact that I use them every day. I program in VB.NET at work, and I've used Visual C++ extensively, and I've also tried out C#. I am quite familiar with the concept of CLR.
I am sure that you can get an MP3 player running quite easily, but I'm also sure that you can get an MP3 player running easily on BeagleBoard once you have an operating system like Linux installed on it (incidentally, it's not that hard to get Linux running on the beagle board).
I don't have anything against Microsoft per se, but they have not "played well" with the open source community in the past. Nor do they like to adhere to standards.
Furthermore, to answer your question, yes I have watched all 3 videos and I've visited the TinyCLR web site, as well as some other links, and I've also seen some YouTube videos of the projects people have done. It seems very powerful.
I think this is a very nice board, and it's not my intention to dissuade anyone from using it. I think if you're a C# programmer wanting to branch out into embedded development, this is your ticket. It's my gut instinct, however, that once you experiment with it, that you're going to want to delve deeper into the electronics and discover how it works.
That said, if you just want to get a product to market, and you already know C#, maybe you'd use this too.
Would I personally develop a product based on it? I don't know for sure, but I'd sure have to investigate licensing issues and versioning support before I decided on it.
No public wish lists :(
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