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In an electric car built by a friend of mine, he used a shunt resistance.
It was a plain copper bar, about 10 cm long by 5 cm wide and 1cm high.
So we used a 24bit ADC, with two ports: one on one end and the other at the other end of the bar. Then you just calculate the voltage drop.
Easy and...
Max232 for sure.
If you give a look at the datasheet, you will read somewhere stating that the EIA-RS233 (or V.24) must allow short circuit on its lines.
So the MAX232 is your best choice.
If I'm not mistaken, there is even a newer IC, MAX2323, that has all the boost capacitors built-in, making...
I would definetely do the keyboard interface using a microcontroller, a graphic dedicated chip (like SSD192X), and let it do all your communication with the computer.
You cannot do any interface computer-touchscreen directly. You will have to go through some kind of hardware.
If I understood well, it is a simple TX-RX. Pins 10 and 11 (suppose TX and RX) of the ucontroller would be used.
You can use Windows Hyperterminal or any other serial communication software to do it.
You just have to set the serial interrupt, or poll the ucontroller RX buffer. Then, you check...
Helo there!
Didn't quite understand your question. You have to make the speaker "say" for example, the letter A when you press the corresponding A keyboard button?
If this is it, the you'll have quite a trouble ;-)
Hello there.
I got a schematic from the internet which had a microcontroller on it (it is a TQFP-64 of a PIC24FJGB106, in case you are curious) and a PCB drawing. No libraries came with it. Just the *.sch and the *.pcb
I began to draw my own schematic and searched for the above microcontroller...
Maybe.
Check your PGD, PGC pins. Maybe they are inverted, which will give you this same error.
You should also check the Silicon Errata documentation from Microchip on the chip that you are using. Maybe you have put the chip in such a condition where it will not be able to be programmed again...
I had the same issue. This could happen in two ways. First, you don't have your paths set in Tools location. To do this, goto Project --> Set Language Tools Location, find Microchip C18Toolsuite, expand Default Search Paths(...), and check if you have Include Search Path set to something like...
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