Member Since: July 29, 2009

Country: Netherlands



i love everything that has to do with electricity

Spoken Languages

Dutch,english and a little bit german

Programming Languages

Arduino(c++),Basic,HTML,javascript and SPIN






  • idk if you still need to know, but in case others want to know:

    Yes mbed LPC can be used instead of a arduino. This RGB matrix is mostly pretty rudimentary (it is basicly a very large Dot-Matrix display). In fact it is probably more desire to use something as a mbed as that has plenty of memory and processing power to control the screen quickly and do whatever else you want it to do.

    This answer applies to any ARM or FPGA device really. mbed, Teensy3.x, Arduino Due.

  • A Probably good idea is to write down it’s information if planning to plug/unplug more then a few times. That text is likely not going to last that long if frequent plugging is involved.

  • hmm. i thought these were replaced by their 16 and 32kbyte siblings on most/all sparkfun boards years ago. Have they gone by in storage unnoticed for so long?

  • Well its a Nintendo DS touch screen. Their displays are 3" diagonal, 2.4"*1.8" dimensions. 4:3 aspect ratio. So a 4:3 3" screen should be what you are looking for.

    Hope this helps!

  • Well this is not a Display board. its only the touch-screen interface. you would need to put a seperate lcd underneath the screen for a full on touch display.

    As for the screen here working with arduino it’s pretty easy. The Bildr tutorial linked in the description shows you exactly how to use it.

  • Very unlikely. RasPi consumes up to 700ma@5v (Model B). You will probably want the 2000mah version if you want the raspberry to work for atleast 3 hours at maximum consumption. You may also want to look up on how others power the Raspberry pi of batteries. Some parts need 5v and others 3.3v so you may need to do some boosting and regulating to get everything working properly.

  • If the discharge limitation of 2C is incorrect. Then what is the actual limitation? its kinda important considering there is no built-in protection. Also what are the real dimensions?

  • The MSGEQ7 has a high input impedance. It doesn’t take the entire signal. it merely samples it. You can pass the signal to a different part with the chip merely being connected by its 1000pf capacitors to the signal.

    Take a look at the “Spectrum shield” here on SF. its a arduino shield that does pretty much what you request. Its schematic should show how easy it is to use this chip!

  • Sofar I can tell the differences between this and the gen.1 (for those wondering) are: Replacement of RS232 by 3.3v TTL-uart header, 12-bit PWM, 12v PoE, UART1 redirecting to arduino header, Power regulation for freedom in wall-wart choice and that the usb-host port is an actual usb port. rather then a micro connector that requires a otg cable.

    Atleast that is what I gathered.

  • idk if that is a good idea. Switching the operating voltage while live may be a bit risky. I wouldn’t trust a potential kill-switch that may damage the device and possible whatever its connected to. Rather own 2 separate ones with each configured properly instead.