Involvement:General (knows how to use it) - Ownership:more than 1 month
Good shematic, good build quality, working soft.
Very cheap for this equipment.
shematic is standart and simple using FTDI FT232RL chip, 7 bipolar transistors and LM393 IC.
FT232RL is very powerful chip. It along prices about $5.83 in my country.
It is not working with my car. B-((.
Device is working and it answers for software. When I trying to connect to MCU in my car somthing is "clicking" (I think it is some relay) and no answer from MCU.
I tried a different software but with the same result.
...I'm not too upset, because I have already said that the chip, which is in the adapter is very versatile and powerful and I can use it in my projects. Here are just some of the characteristics of the chip (and it working properly):
Single chip USB to asynchronous serial data
Entire USB protocol handled on the chip. No
USB specific firmware programming required.
Fully integrated 1024 bit EEPROM storing
device descriptors and CBUS I/O configuration.
Fully integrated USB termination resistors.
Fully integrated clock generation with no
external crystal required plus optional clock
output selection enabling a glue-less interface
to external MCU or FPGA.
Data transfer rates from 300 baud to 3 Mbaud
(RS422, RS485, RS232 ) at TTL levels.
128 byte receive buffer and 256 byte transmit
buffer utilising buffer smoothing technology to
allow for high data throughput.
FTDI?s royalty-free Virtual Com Port (VCP) and
Direct (D2XX) drivers eliminate the
requirement for USB driver development in
Unique USB FTDIChip-ID™ feature.
Configurable CBUS I/O pins.
Transmit and receive LED drive signals.
UART interface support for 7 or 8 data bits, 1
or 2 stop bits and odd / even / mark / space /
FIFO receive and transmit buffers for high data
Synchronous and asynchronous bit bang
interface options with RD# and WR# strobes.
Device supplied pre-programmed with unique
USB serial number.
Supports bus powered, self powered and high-
power bus powered USB configurations.
Integrated +3.3V level converter for USB I/O.
Integrated level converter on UART and CBUS
for interfacing to between +1.8V and +5V
True 5V/3.3V/2.8V/1.8V CMOS drive output
and TTL input.
Configurable I/O pin output drive strength.
Integrated power-on-reset circuit.
Fully integrated AVCC supply filtering - no
external filtering required.
Great set of options...
Despite the fact that I could not take advantage of this adapter, according to his scheme, I see that it is sufficiently reliable. Moreover, that car, for which I bought the adapter I already sold and is now going to use this card in my homemade. I think this is a very good buy for the money ...
Yes, I almost forgot, if you want to use this adapter with old machines BB Group, you'll have to buy one more thing this adapter:
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