bi-color LED's have two LED elements inside. (usually Red and Green). tri-color LED's have three LED elements inside (usually Red, Green and...
There is this Nokia cellphone, not sure wich one, but the entire plastic front, including keypad, LCD and speaker is exchangeable. That LCD is...
A max232 is the best and easiest solution. But there are other, much cheaper, but a bit more complicated solutions as well.
Ok, you don't happen to have it, or know where I can find it?
Hey! Don't forget LED's! Newbies tend to love blinkin' LED's :) You need at least red, yellow and green ones... buy at least 5-10 of each color...
Nice... I'll have to look into that some day. I'am about to throw Ivex out the window, it can't handle millimeter components and boards properly,...
The keyboard is a unpowered USB hub. According to the specification, unpowered USB HUB's can only supply power to low power devices (50mA max)....
Use a phototransistor combined with a regular transistor in order to amlify the current.
Check out www.epanorama.net for a few schematic examples. Essentially, the ISA bus is a standard 8MHz microprocessor bus, (contrary to PCI)
a: PIC is not the only MCU out there you know.. To do it your way you should use one pot to get a voltage between 0-5V, that voltage can be...
iSteve: Nice little idea you've got there... I've got an idea on how to make it even cooler: Let's use a encoder typ of pot (you can turn thoose...
There is a great PCB manufacturer in Belgium :-)
Actually, if you read his post again... He's asking for a very small motherboard, NOT where to buy one. If someone has a good suggestion for a...
A 100ohm pot is ideal.
I think it's even small enough to be modded into a keyboard.. Current consumption is so low that it can be powered off the serial port.. No extra...
I can get old cellphone LCD's at a nice price, they are not compatible with standard LCD's thou, so they can't just be connected to the paralell...
A triangle wave generator cannot be combined with the automatic VU/knight switch.
Probably. A 100k resistor gives about 1-2mA current, (depending on if it's 110V or 230V). Sounds about right for a resistor who's only purpose...
A good idea... Another thing... the bottom LED is most probably always on when you play music, but it might go off during pauses in the music,...
Check the datasheet, the backlight LED's have a maximum specified current, DON'T EXCEED THAT. A 10k pot is way off for controlling the...
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