Hey, sorry everyone, I know it’s been a while. But I hope this post will make up for that! Anyone who has done embedded programming knows that an easy way for microcontrollers (like arduino) to connect to a PC is through a serial connection. Unfortunately, not many computers have a serial port these days, and while are a lot of chips that will act like a usb-serial converter, they tend to be somewhere in the $3-5 range. However, I found one chip, the CH340G, that only costs 40 cents!
CH340G – alternative USB to serial IC - [Link]
Limpkin has build a development board for the ESP8266-03:
The ESP8266 modules come with a pre-loaded firmware that will accept some commands through their UART interface (connect to wifi, open udp socket, send data to this IP…). Moreover, since Espressif recently released their SDK you can now load your own custom programs using the existing bootloader. To launch this bootloader you just have to connect some IOs to GND in a specific order.
However, anyone wanting to develop a project involving dozens of Wifi nodes has to start from somewhere, eg make a prototype of their future platform. That is why I developed this development board, so the prototyping stage is as simple as possible.
As you can see in the picture below the dev board breaks out all the ESP8266-03 IOs, includes a 3.3V LDO, a USB to UART converter, some logic and a button to automatically start the bootloader.
A development board for the ESP8266-03 - [Link]
The board includes AMS1117 – 5V voltage regulator and AMS1117–3.3V, Voltage Regulator, providing fixed supply voltages. It features three voltage input options: a screw terminal connector, DC adapter connector and USB connector. It can operate on 6-12V DC power supply and has separate screw terminals for 3.3V and 5V outputs.
5V – 3.3V REG BOARD - [Link]
Control of up to 680 pixels on any of the popular LED strips from any device with a USB port! One controller to rule them all!
Working with addressable LED strips, we’ve found that the extra components required to communicate with and power them complicate designs and limit the options for how they can be used. Each chipset requires its own special protocol and supporting hardware components. This is where the AllPixel comes in. Think of it as a video card for your LED strips.
AllPixel – USB Interface For All Your LED Needs - [Link]
The FT600 and FT601 are both USB 3.0 to FIFO interface chips supporting the USB 3.0 Super Speed (5 Gb/s) and USB 2.0 High Speed (480 Mb/s) data transfer standards. The FT600Q has a 16-bit wide FIFO bus interface and comes in a 56-pin QFN package while the FT601Q uses a 32-bit wide FIFO interface, packaged in a 76-pin QFN outline. The FT601 and FT600 support both the single-in and single-out 245 FIFO interfacing standard and the multi-channel FIFO mode which can handle a total of 8 channels (4 INs and 4 OUTs). The FIFO interface can support multi-voltage I/O (1.8 V, 2.5 V or 3.3 V) and an operating frequency of 66.67 MHz or 100 MHz (100 MHz only for 2.5 V and 3.3 V).
FTDI Launch USB 3.0 Chip - [Link]
High power of the UDOO “asks” for usage. One of many occasions to make it is to use various available periphery thus gaining a truly universal platform.
Favorite powerful embedded SBC called UDOO (S975-G000-2100-C2) already found many fans. Maybe also because of its compatibility with the Arduino Due platform (hardware and software) and mainly, it´s possible to connect it with various accessories. Thanks to a wide range of interfaces (USB, Ethernet, bluetooth, WiFi, …) is a connection of periphery flawless, what´s also a case of the 5MPx camera (autofocus).
Despite miniature dimensions this camera provides very decent resolution and speed – for example VGA (640×480) @90fps or 1080p @30fps, or QSXGA (2592×1944) @15fps. Also beneficial is recording of a video in a full 70°field of view (FOV).For a practical usage and application development with UDOO also serves the „Starter kit EU” containing an adapter for the third USB, RTC battery holder, HDMI cable with the UDOO logo, USB/ Micro USB Type B cable, SATA power supply cable, power supply adapter and an 8 GB micro SD card.
Perhaps the biggest “attraction” is the spacious 7“ display KIT LCD 7”–Touch 800×480 px RGB with a capacitive touch panel. By connecting of this display with the UDOO microcomputer, we get a ready-made platform usable to control various processes, with a power, which easily suits to majority of applications. Detailed information about the UDOO can be found in our article: Do you want a microcomputer which will „handle everything“?.
High power of the UDOO “asks” for usage - [Link]
RaysHobby build a project called RFToy:
it’s an Arduino-compatible microcontroller board for interfacing with radio frequency (RF) modules, such as the popular 433/315MHz transmitter/receiver, and the nRF24L01 transceiver. The RFToy has a built-in ATmega328, USB-serial converter (CH340G), 128×64 OLED display, three buttons, and a coin battery holder. Programming is done in Arduino through the on-board mini-USB port. It has three sets of pin headers to directly fit RF modules, and an audio jack to output RF receiver signals to a computer’s sound card. Using RFToy you can build a variety of projects involving RF modules, such as remote control and wireless sensors.
Introducing RFToy, an Arduino-compatible gadget for radio frequency modules - [Link]
by TheSignalPathBlog @ yoututbe.com:
In this world exclusive episode, Shahriar takes a close look at the all new Tektronix Real-Time USB Spectrum Analyzer. The RSA306 has an RF bandwidth from 9kHz to 6.2GHz with a real-time analysis window of 40MHz. While being entirely powered form a single USB 3.0 interface, it provides a 100% Probably of Intercept for any signal event of at least 100us in duration. The RSA306 is compact, lightweight and shock resistant. At the same time Tektronix has made its Signal-Vu PC software with 17 measurement capabilities free and significantly reduced the price of other Signal-Vu advanced applications!
The SFDR, linearity, noise floor and phase noise of the instrument are all measured and presented. The unit is then used to capture and analyze an intermittent RF interference, analyze and demodulate an RF FM signal using an antenna as well as demodulation a 256-QAM signal with -65Bm of total power.
Tektronix RSA306 USB Real-Time Spectrum Analyzer Review and Experiments - [Link]
In a break with tradition Textronix have announced their first USB-based item of test equipment. The RSA306 is a spectrum analyzer with a 9 kHz to 6.2 GHz frequency range and a 40 MHz instantaneous bandwidth. According to the press release this is just the first of many test instruments the firm will be launching which takes advantage of the availability of affordable desktop computers and laptops with sufficient processing power to handle complex test and measurement analysis along with high-speed USB 3.0 interfaces.
Tektronix USB Spectrum Analyzer - [Link]
by Mohamed Ismail @ edn.com:
Other than generous helpings of coffee, what helps industry decrease time to market, drive down cost, and focus more of the design cycle on innovation? Hint: standardization. By defining protocols and operating characteristics, standards have impacted all aspects of technology: device package sizes, pin outs, data and communication interfaces, software drivers, connectors, ESD ratings, environmental compliance, test fixtures. The list goes on and on. The more detailed a specification, the better equipped are developers for defining products that serve the marketplace. If there is any doubt about the value of tightly defined standards, go into any two clothing stores and buy the same size shirt.
USB battery charging rev. 1.2: Important role of charger detectors - [Link]