RS-232 full voltage range

When it comes to RS-232 electrical characteristics, there is one important thing to note: the voltage range for signalling in RS-232 is very wide, from 3 to 15 volts, plus or minus. The implication is that designers of serial port boards, such as LAVA, have wide latitude for electrical design, according to the specification. In […]

read more

RS-232 voltages

Recently, while blogging on the Raspberry Pi computer board, I’ve been reminded of the importance of paying attention to serial port voltage levels. While voltage levels are a general consideration for all electronics, I’ll just talk about RS-232 voltage levels, since speaking of voltage levels can be a bit tricky particularly with RS-232. Taking the […]

read more

New! Dual serial full-height PCIe card

We’ve just launched a new version of our DSerial-PCIe. This version is the DSerial-PCIe/LP (our low profile PCIe card), but fitted with a full-height bracket. The advantage is that the fan-out cable used on the low-profile version is now available on a full-height PCIe card. For those wanting the flexibility of a cabled solution for […]

read more

More on Raspberry Pi serial ports

This blog posting on the Raspberry Pi serial ports goes into a bit more detail than the last post on Raspberry PI serial interfacing, as it compares the two serial ports the Raspberry Pi has and looks more closely at the characteristics of the second serial port available on the Raspberry Pi. Of course, for […]

read more

Weather stations on the Internet

From backyard weather stations to nation-wide integrated systems, the Internet has transformed the collection, analysis, and distribution of weather information. By their nature, weather stations are geographically scattered, and yet there is great value in consolidating the information that they collect. For this reason, many weather stations have the capability of outputting thier data to […]

read more

Tyco/ADT TTL Embedded RFID Reader

ADT Business Solutions, a division of Tyco, includes in its retail security products RFID security and inventory systems. They needed serial-to-Ethernet interfacing for one of their portable RFID reader systems. Their specifications were for a compact embedded Ethernet-to-TTL serial module that could be integrated into RFID base stations. These base stations would in turn seat […]

read more

Car Wash 5 Port Embedded Serial Device Server

Innovative Control Systems had a requirement for serial port control of a number of systems in a chain of automated car washes. In this setting, moisture and heat were unavoidable, and the device had to be fitted into an existing climate-proof enclosure. LAVA developed a spin of hardware to meet this need, producing a five-port […]

read more

Serial Device Server Applications White Paper

We’ve just added a new white paper to our collection of technical white papers. This one’s a survey of uses for serial device servers (LAVA’s Ether-Serial Links) that looks beyond the obvious purpose of IP-enabling serial ports to look at other uses for these versatile devices. Additional functionality in Ether-Serial Links makes it possible for […]

read more