USB - TTL converter "E.xoom
When handling microcontrollers often eded to somehow communicate with the computer. The easiest way is to communicate via RS232 (COM) port .. But the current kompiuiriai not all have this connection, let alone on the laptop :) Let's say we have a COM port, but it was as I have mentioned in older articles are different voltage levels (12V and-12V) and microcontrollers required 0V and 5V :) (TTL) for this purpose can be used MAX232 chip, which replaces the levels .. But because the COM port is not very often besutiksi, it requires a USB - COM converter ..
Clearly such devices is to buy in stores like the USB-Serial Port Converter, which acts like a real COM port (12V and-12V), only the price is not overly large .. As soon as I started to raise interest in electronics, in particular, wanted the machine would become diagnostic adapter, it was out and buy ..
at the time it cost me 42Lt. (Approximately 2 years ago) it turns out that there used to chip FT232BL .. I've also often come across and away the more And this chip and has a USB - TTL conversion, only that in this converter would buy another one chip, which translates from TTL to RS232 .. Isard was not but anticipate the datasheet'ą looked, that there can be SP213EHCA chip .. So after opening and should you need it .. only. that it is a disincentive .. because samsung e2330 FT232BL chip shop expensive cost 25Lt. But you could find and even much cheaper to buy the cable to connect the phone to the computer. What I did, I bought the Samsung C100 cable for even 10Lt. But it had to be, modified slightly.
Orginal it was 3.3v output .. datasheet'e I've found that it depends on what kind of voltage applied to a valid PINs are four. To me and that was it, on 4 valid PINs are the 3.3v voltage .. The tester googled 5v and chopping off the track prilitavau there.
Morkavas track - the newly born, violet - orginal former and cut .. Beto this device with the wire ends (USB cord and plug cord Samsung'o), and overturns the table when you are doing something all the wires begin to take care of .. trying to unravel it all starts to Christ on the table approaching the word "Disaster" So persidariau samsung e2330 and it .. I used a mini USB port and 6 Pinus išėjimamas .. Since the box was not too dydžiausia .. I did not want to do more and it had a little trim panel with all the tracks looked at what was not needed and clipped a little samsung e2330 hot glue and the board stood box
one USART enough 3-wires (RxD, TxD, GND) išsivedžiau several useful samsung e2330 so all we need: VCC, TxD, RxD, DTR, RTS, GND DTR and RTS as can be easily and usefully used elsewhere So everything together and closed box are left to try :)
We can see that running through the terminal program sends an "X" with the letter ASCII code is 88 or hex'u 0 58, to see whether samsung e2330 they comply with the signal should look at the mask, which is 0b01011000, sent no parity, and one stop bit so that the oscilogramosi seen:
This entry was posted on Friday, July 23rd, 2010 at 22:41 pm and is filed under MCU. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site. 10 Responses to "USB - TTL converter"
09/25/2011 at 12:14
First - 0.000102 divide by 1 really sparse 9803.9 (0.000102 / 1 = 9803.9), the second - newer TTL logic do not work with 5V and with 3.3 V and therefore would be useful to make koki conjunctions unless you know for sure that is not required.
When handling microcontrollers often eded to somehow communicate with the computer. The easiest way is to communicate via RS232 (COM) port .. But the current kompiuiriai not all have this connection, let alone on the laptop :) Let's say we have a COM port, but it was as I have mentioned in older articles are different voltage levels (12V and-12V) and microcontrollers required 0V and 5V :) (TTL) for this purpose can be used MAX232 chip, which replaces the levels .. But because the COM port is not very often besutiksi, it requires a USB - COM converter ..
Clearly such devices is to buy in stores like the USB-Serial Port Converter, which acts like a real COM port (12V and-12V), only the price is not overly large .. As soon as I started to raise interest in electronics, in particular, wanted the machine would become diagnostic adapter, it was out and buy ..
at the time it cost me 42Lt. (Approximately 2 years ago) it turns out that there used to chip FT232BL .. I've also often come across and away the more And this chip and has a USB - TTL conversion, only that in this converter would buy another one chip, which translates from TTL to RS232 .. Isard was not but anticipate the datasheet'ą looked, that there can be SP213EHCA chip .. So after opening and should you need it .. only. that it is a disincentive .. because samsung e2330 FT232BL chip shop expensive cost 25Lt. But you could find and even much cheaper to buy the cable to connect the phone to the computer. What I did, I bought the Samsung C100 cable for even 10Lt. But it had to be, modified slightly.
Orginal it was 3.3v output .. datasheet'e I've found that it depends on what kind of voltage applied to a valid PINs are four. To me and that was it, on 4 valid PINs are the 3.3v voltage .. The tester googled 5v and chopping off the track prilitavau there.
Morkavas track - the newly born, violet - orginal former and cut .. Beto this device with the wire ends (USB cord and plug cord Samsung'o), and overturns the table when you are doing something all the wires begin to take care of .. trying to unravel it all starts to Christ on the table approaching the word "Disaster" So persidariau samsung e2330 and it .. I used a mini USB port and 6 Pinus išėjimamas .. Since the box was not too dydžiausia .. I did not want to do more and it had a little trim panel with all the tracks looked at what was not needed and clipped a little samsung e2330 hot glue and the board stood box
one USART enough 3-wires (RxD, TxD, GND) išsivedžiau several useful samsung e2330 so all we need: VCC, TxD, RxD, DTR, RTS, GND DTR and RTS as can be easily and usefully used elsewhere So everything together and closed box are left to try :)
We can see that running through the terminal program sends an "X" with the letter ASCII code is 88 or hex'u 0 58, to see whether samsung e2330 they comply with the signal should look at the mask, which is 0b01011000, sent no parity, and one stop bit so that the oscilogramosi seen:
This entry was posted on Friday, July 23rd, 2010 at 22:41 pm and is filed under MCU. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site. 10 Responses to "USB - TTL converter"
09/25/2011 at 12:14
First - 0.000102 divide by 1 really sparse 9803.9 (0.000102 / 1 = 9803.9), the second - newer TTL logic do not work with 5V and with 3.3 V and therefore would be useful to make koki conjunctions unless you know for sure that is not required.
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