Nabil Tewolde build a bluetooth OBD-II adapter. He writes:
The board is basically the reference schematic for the STN1110, which converts many OBD-II physical layers into RS232. The bottom of the board has a bluetooth module from Deal Extreme. The plan is to connect a smartphone or tablet to the device and log data.
Bluetooth OBD-II Adapter - [Link]
Integrated circuit FT232R is becoming legendary and we bring you another example of FTDI USB chips usage.
In praxis we often face a requirement to communicate with devices, which have serial ports RS232, RS422 and RS485. As many devices – mainly notebooks, already usually don´t have these ports, it is necessary to use a converter to convert serial port to USB.
Company ComErgon, s.r.o. is long-term dedicated to development and production of such converters. ComErgon has in its offer models for RS232, RS422 a RS485 interfaces. USB to RS422 and RS485 converters are produced with a 1kV galvanic isolation, as lines on the RS422 and RS485 side can be lead even on long distances and an eventual overvoltage could be able to damage end devices. Version RS232-USB is available with galvanic isolation but also without isolation.
More detailed information and technical specification of these converters can be found at website of company ComErgon.
Company ComErgon focuses on development and production of converters for RS232, RS422, RS485, RS422/RS485 repeaters, serial to Ethernet interface modules, GPRS, Fiber Optic, 433MHz, current loop and other.
Customer solution: Trouble-free RS232, RS422, RS485 to USB conversion - [Link]
Compact embedded module WizFi630 enables to connect any serial RS232 device to a TCP/IP network.
However it´s not all. By supporting 3 Ethernet ports, it offers a wide variability to connect another devices to a Wi-Fi network, in various operation modes.
Novelty from company Wiznet WizFi630 module provides, besides the RS232/ Wi-Fi interface, even many other functions, which place it to a category of routers. Via 2 UART and 3 Ethernet ports it is possible connect several devices in various modes of operation: AP (Access point), Client , AP client and Gateway. These modes are best illustrated in attached picturs. For a development support, we offer you a novelty - WizFi630EVB evaluation board with complete accessories.
WizFi630 – the immediately available WiFi - [Link]
New intelligent display eDIPTFT70 from Electronic Assembly provides all what its smaller relatives and something in addition – the size.
With the 7” size and an 800 x 480 pixels resolution, it can display a relatively considerable amount of information. Similarly like other member of family eDIP (eDIPTFT32 a eDIPTFT43), even eDIPTFT70 eliminates the need of demanding and time-consuming programming at pixels level.
All the control of the display is done on commands level, thus to display text, graphics and many other symbols is exceptionally easy and simple. Control by commands substantially accelerates development and shortens the time to market. At an application development it is possible to use predefined functions, symbols and geometric functions, bargraphs, frames, buttons and many other. In general eDIPTFT70 offers almost the same functions like other eDIPTFT family members, including almost immediate start within a few 1/10 of second.
Single +5V supply, analogue touch panel with a variable raster and software-dimmable backlight brightness contribute to the versatility of usage. In many of applications also 80 various short jingles for audio feedback can be useful. Even eDIPTFT70 contains 3 communication interfaces – RS232, I2C and SPI, that´s why it can be connected to virtually any device. Further information will provide you the eDIPTFT70 datasheet.
New 7″ eDIPTFT70 display – when the size matters - [Link]
Compact embedded module WizFi630 enables to connect any serial RS232 device to a TCP/IP network. However it´s not all. By supporting 3 Ethernet ports, it offers a wide variability to connect another devices to a Wi-Fi network, in various operation modes.
Novelty from company Wiznet – WizFi630 module provides, besides the RS232/ Wi-Fi interface, even many other functions, which place it to a category of routers. Via 2 UART and 3 Ethernet ports it is possible connect several devices in various modes of operation: AP (Access point), Client , AP client and Gateway. These modes are best illustrated in attached picturs. For a development support, we offer you a novelty – WizFi630EVB evaluation board with complete accessories for a promo price in a limited amount – with almost 50% discount.
- high-performance Wi-Fi module with the RS232 interface
- 90 Mbps effective rate
- IEEE 802.11 b/g/n
- 2 UART and 3 Ethernet ports
- usable as a Wi-Fi router, AP, AP-client, Client, AD-HOC
- 64/128 bit WPA/WPA2-PSK TKIP, AES
- easy configuration via a built-in web server, serial commands or a Windows utility
- CE, FCC, KCC certificates
WizFi630 – WiFi on all ways, including AP, Client and Gateway – [Link]
Mifare and DESfire RFID modules from company Stronglink enable to use advanced RFID technologies while maintaining a very affordable price.
MIFARE ultralight, MIFARE 1k, MIFARE 4k and MIFARE DESfire are known technologies of RFID enabling to use various application, store various data and other functions. From this reason, they´re largely used in admission systems, loyalty programs, goods tracking and many other segments. From the security point of view, mainly the DESfire system with the DES/AES encryption excels. New 13,56 MHz Stronglink modules in our portfolio – SL025M, SL030, SL031, SL032, SL040 and SL040A enable to use these technologies and they are relatively easily applicable because of more reasons. Firstly, they are available in more versions with UART, I2C, RS232 as well as USB interface, they are certified (CE and RoHS) and the producer provides an above-standard development support.
Usage of modules is also simplified by their low power consumption and a relatively very low-profile construction with the height of only few mm. An important factor – the price, also says in favor of Stronglink modules, because they´re available for relatively very competitive prices. For the development support, there are also available source code examples for various microcontroller families. Further information will provide you the SL025M, SL030, SL031, SL032, SL040 and SL040A user manuals and AN100721, AN101203 and AN110221 application notes.
Stronglink modules will provide you a highly secure RFID - [Link]
Scanalogic-2 PRO is a 4 channel Logic Analyzer and Digital Signal Generator priced at 59€. At this cost it’s easy for a hobbyist to get one and make digital circuits debugging a breeze. It’s designed to capture, decode and analyze serial protocols like SPI, I2C, UART, 1-WIRE and CAN in a few clicks. Data is captured on PC using the free and efficient ScanaStudio software.
- 20 Million Samples Per Second
- 4 Input/Output channels
- 256K Sample per channel
- 2V, 2.8V, 3.3V, 3.6V and 5V logic levels support
- Serial protocols decoders (SPI, I2C, 1-WIRE, UART, CAN, LIN,Manchester)
- Various trigger options
> Download features PDF
What you can do with Scanalogic 2
- Capture and Analyze signals – Serial protocols sampling, decoding, debugging (UART, I2C, SPI, CAN, 1-WIRE, LIN, Manchester,…)
- Save captured data and playback them later or on the other side of world!
- Generate PWM, FM or UART signals
- Capture images of your signals for demostration.
- Digital PWM and FM signals analysis (FFT)
- Compare captured signals.
- Use “mixed” mode to play a signal and record response on another channel (at the same time!)
- Generate your own data (PWM, FM, Serial Data)
- ScanaStudio PC software offers smooth scrolling and navigation options.
Dilshan developed a precision event logger based on the PIC16F73 and some binary ripple counters from the CMOS logic family. The project uses a 2Mhz reference clock, and is capable of measuring events from 0.02 to 6.8 seconds long. [via]
The counter gets activate and deactivate in positive edge of the input signal. Thanks to the wider operating voltage of the CMOS ICs this counter may be able to handle +5V to +15V of input signal. At the end of the counter session system release total tick count to the RS232 interface and it can receive through any serial terminal software. When applying the inputs it is recommended to maintain minimum of 100ms of interval between each session.
Precision event logger measures 0.02 to 6.8 seconds - [Link]
Open source application for charting data sent via RS-232 port in real time.
SerialChart – Analyse and chart serial data from RS-232 COM ports - [Link]
Today I will show how to make digital bridge between Arduino and PC: control analog – digital converter and send measured data to PC. Windows application will be created using Visual C++ 2008 Express.
Voltmeter demo software is very simple, and here is a lot room for improvement, but I just wanted to show basics how to control com port and execute data exchange between PC and Arduino.
Digital voltmeter – Arduino and PC (Visual C++) – [Link]