Hello, I Have a small rover that I been working off and on the last few mounths. I am ready to add more sharp sensors. But would like to make up my own...
I've been struggling with this one for a few days, to no avail. I have a bunch of analog sensors that I read with GetADC(). Each sensor going to a seperate...
Don, When using transistors, you will always have to drop some voltage to close the output side PN junction. This may taint your application? Although I have...
... Counting pulses is not normally an analog function so, unless the pulses you are counting peak below about two volts, you will free analog pins by moving...
The chip that Tom sugessted would surely be more compact than individual relays. Very good suggestion would be simple to implement. John Each switch can pass...
... Look at Atmel's DataFlash. Up to 8MB, I think, SPI, and it comes in IC or removable card form. http://www.atmel.com/products/DataFlash/overview.asp Tom...
Thanks very much Tom. That's much easier to work with than relays. I'm looking through the spec sheet right now. I usually use the upper and lower ADC values...
Here are some chips used in data acquisition expansion boards ADG506A 16-Channel Multiplexer ADG508A 8 Channel Analog Multiplexers These chips require aprox....
i need much more storage space than the 32kb that is provided on my bx24. i have been looking over old posts and so far the only way ive found is to switch...
... junction, the pin will always see some resistance to ground, even when the sensor is a dead short. You don't show that resistance in your drawing, if I...
... You're right. The resistance (i.e. bilateral switch) would be right at the BX pin, as this is where I would want to switch between sensors. ... unless ......
I have a rotating project, powered through slip rings. Slip rings are inherently noisy so, to minimize noise on the power bus, I've added a large electrolytic...
... No experience with this specifically, but if your project doesn't draw too much current I'd suggest adding the series resistance to the slip ring path....
The snubbing diode would have to use a different ring though where the chance of both being open at the same time would be low. Just guessing here [Non-text...
Is your rotaton going to be more than one rotation or will it be limited? Tim Chapman tim@... TEC Computer Services www.teccs.biz (602) 486-0502 ... ...
Are you just sending power, or are you also sending data on another ring? How many rings and what is the normal current and voltage you are passing through the...
... I used a slip ring for data early in development and learned quickly that I needed another way to talk with the processor. I've settled on Bluetooth for...
You could 'beam' the power over with a magnatron and a tuned antenna at the recieving end... I agree with the R on the power side. If the max current you need...
... Induction couplers have been around for a good while. One of the first places I started looking for inspiration was inside a VHS tape player video head....
... work for DC. But it would work for AC, and then rectify it on the other side. Something like an unbuffered switching power supply would give you ...
I found this web site which offers noise free rotating power feed. http://www.mercotac.com/ Tim Chapman tim@... TEC Computer Services www.teccs.biz (602)...
... available [current] to that much. I think this is good simple advice. An LM317 and a 1-ohm resistor makes a convenient 1.25A-max source. I'll try that....
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