자유게시판

We feature RS232, RS422, RS485, USB, and ethernet devices using copper and fiber. Where advantageous, we feature dual isolation, and multi-level transient protection. The two values provide a sufficient margin for a reliable data transmission even under severe signal degradation across the cable and connectors. This avoids data collisions and leading edge degradation. Header for offboard FTDI Module (can be right angle or vertical), "L" LED at the edge of the board. Our products are at the South Pole, the bottom of the sea, the edge of space, and in between. It has a special capacitive sensor designed by us, efficient and of good precision, waterproof, resistant to oxidation and not subject to variations due to salinity and soil composition: better than this there are only the "extraction pressure" sensors (which we do not propose because they are not durable and also the sensor alone costs hundreds of euros). The probe is available with 0.8m or 3m cable; and possibly can be replaced by anyone with good dexterity. TXSoil can transmit the humidity to a Web server or to a VisualVision's display / concentrator such as DisplayRX or ControlHUB or RXTXeasy GSM - with adjustable interval, remaining for the rest of the time in standby with very low consumption.

If there are several sensors near and/or other data to be transmitted via GSM, it is more convenient to use Standard / RF versions supported on a concentrator or controller such as RXTXeasy GSM so you will be able to use one single SIM. The issue also exists in programmable logic controller applications. Video Sync Input and RS422 - Video multimedia applications require synchronization with the video when converting video to streaming format or in MIDI applications for sound synchronization. Similar to Original Bobuino; ATMega1284, RS232 port, FTDI FT232RL USB, SD Card Socket, Screw terminals for 4 serial ports, power, 2 input buttons, 3 switch closures, additional SPI-Dual UART with RS485 interface drivers, 3 additional Status LEDs, Arduino shield compatible. RS-485 does not define a communication protocol; merely an electrical interface. RE Smith devices will not limit your communication speed. Breaks out 2-pins for each LED, connect them up & spread out however you'd like - big display, a globe, etc. No current limit resistors needed.

Also added 2A 1206 size diodes from the MOSFET Drain to the supply, it might be enough to eliminate the need for a diode across a low current coil, like a relay, solenoid, or small motor. We tried to build an organic system so that whoever gets a TXtemp, TXsoil sensor or a bridge for RS232 or ModBus sensors and devices like TXdata can immediately use them without wasting time in configurations (and we also took the opportunity to insert some things into our system some "extra" not foreseen by the standards!). Extended range 3KV isolated high drive voltage(12-15V) devices using CAT-5/6 cable. It may be used to control video surveillance systems or to interconnect security control panels and devices such as access control card readers. All boards include a Sandisk 4GB SD card and 6 inch/15cm programming cable. Kits $50. Assembled boards $105. Kits less the MIKROE-483 USB module $27. Here it is fully decked with screw terminals and onboard FTDI Module, and with no screw terminals and an offboarrd FTDI module. Easy hookup: Fixed/removable screw terminals, USB, RJ11/12/45, and barrel connectors. PC environment. 8P8C modular connectors are used in this case.

Inputs are daisychained to a second set of contacts for easy daisychaining. In & Out connectors for daisychaining. The ICSP header will support ICSP connectors from other shields. ICSP Header, DTR enable jumper, FTDI header with 5V enable jumper. Pictured: Bobuino 2 with optional screw terminals and optional on-board FTDI module. 7.50 extra for an FTDI module - the one I use has a micro USB connector. USB Serial - The ANC-6204 multi-interface USB adapter provides RS232, RS422/485 or TTL/CMOS in one converter. 40 IO pins. Headers to connect USB/Serial adapter, ICSP, jumpers to connect MAX232 for Serial. Open Drain shift registers, rated for 150mA continuous, up to 50V. IN and OUT headers for easy daishchaining. Easy to use - just shift in 4 bytes, a 1 turns an output on to sink current. More pricey than N-channel as the P-MOSFETs and TPIC6C595 shift registers cost more. Extra 3.3V/Gnd screw terminal added along with 4 more 5V/Gnd screw terminals. The thru hole transistors went obsolete, so the board has been converted to all SMD except for the 74HC595s and the screw terminals.

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