Micro4you Studio

SeeedStudio DSO Quad: An Early Review

2011-01-30T11:41:00.000-08:00

DSO QUAD Specifications

2010-12-29T17:12:00.000-08:00

Specifications (preliminary -these were the design specifications)

Input range: 20mV, 50mV, 100mV, 200mV, 500mV, 1V, 2V, 5V, 10V
Time scale: 1S, 500mS, 200mS, 100mS, 50mS, 20mS, 10mS, 5mS, 2mS, 1mS, 500uS, 200uS, 100uS, 50uS, 20uS, 10uS, 5uS, 2uS, 1uS, 500nS, 200nS, 100nS, 50nS, 20nS, 10nS
On-Screen Measurement: Peak Voltage “Vpp”, Average Voltage “Vdc”, Voltage RMS “RMS”, Voltage Max “Max”, Voltage Min “Min”, Signal Cycle “Cs”, Duty Cycle “Ds”, Signal Frequency “Fs”, Battery Voltage “Vbt”,” Screen refresh rate “FPS” and others
Synch: AUTO: Automatic, NORM: Standard, SINGL: Single, SCAN: slow scanning, NONE: real-time scanning
Trigger: Trigger channel signal source can be A, B, C, D in any of the four input selections, adjustable threshold trigger level (analog channel). Each trigger source (including analog and digital) can be selected as high, low, rising edge, falling edge, high pulse width greater than ⊿ T, high pulse width less than ⊿ T , low pulse width greater than ⊿ T, low pulse width less than ⊿ T
Sampling frequency: 36M +36 M (MEGA samples per second). Using AD9288-40 ADC chip, single-channel maximum sampling frequency is 72M. The FIFO RAM has a maximum operating frequency of > 200M. Can be customized (or ordered to be customized) with the faster AD9288-80 ADC, or overclocking the AD9288-40 in order to achieve 72M +72 M sampling frequency, so that the maximum single-channel sampling rates can be up to 144M
Memory depth: 4096 points per channel; single-channel, 8192 points
Storage: 2MB internal storage (each screen capture is like 1K). Connects to PC as mass storage device. The designers did away with the SD card slot.
Screen: 3″ 240 × 400 widescreen color TFT LCD screen
Power: replaceable rechargeable lithium battery. Can charge through USB connection or external 5V supply. 4 hr battery life in normal operation. May be upgradable to larger batter as long as it fits in the battery compartment. Can fit larger battery for 6 hr of operation
Signal generation: 10Hz ~ 8MHz (digital square wave); 10Hz ~ 20KHz press (analog waveforms such as sine wave, triangular, other)
Data capture: can save real-time bitmat screen image, DAT data file (current page and the full depth) and CSV data file (current page)
Open Source Design (H/W and S/W)

DSO Quad Pictures

2010-12-25T21:59:00.000-08:00

Arduino 0022 now available

2010-12-24T19:06:00.000-08:00

Arduino 0020 is now available. Changes include:

Adding an SD card library based on sdfatlib by Bill Greiman and the MemoryCard library by Philip Lindsay (follower) for SparkFun. http://arduino.cc/en/Reference/SD
Added character manipulation macros (from Wiring): isAlphaNumeric() isAlpha(), isAscii(), isWhitespace(), isControl(), isDigit(), isGraph(), isLowerCase(), isPrintable(), isPunct(), isSpace(), isUpperCase(), isHexadecimalDigit(), toAscii(), toLowerCase(), toLowerCase(). http://code.google.com/p/arduino/issues/detail?id=418
Added String.toInt() function.
core to use register-based, not CPU-based, #ifdefs. Patch by Mark Sproul. http://code.google.com/p/arduino/issues/detail?id=307 http://code.google.com/p/arduino/issues/detail?id=315 http://code.google.com/p/arduino/issues/detail?id=316 http://code.google.com/p/arduino/issues/detail?id=323 http://code.google.com/p/arduino/issues/detail?id=324 http://code.google.com/p/arduino/issues/detail?id=340
Modification of serial baud rate calculation to match bootloader and 8U2 firmware at 57600 baud. http://code.google.com/p/arduino/issues/detail?id=394
Fixed bug in tone() function. http://code.google.com/p/arduino/issues/detail?id=361
Refactoring Fixed SPI.setClockDivider() function. http://code.google.com/p/arduino/issues/detail?id=365
Fixed EEPROM library on Mega 2560. http://code.google.com/p/arduino/issues/detail?id=381
Hardware serial receive interrupt optimization. http://code.google.com/p/arduino/issues/detail?id=391
Applying the timeout parameter of pulseIn() during measurement of the pulse, not just while waiting for it.
Fixed problem with copy as html and angle brackets. http://code.google.com/p/arduino/issues/detail?id=29
Showing serial port selection dialog if serial port not found on upload.
Remembering serial monitor window size and line ending selection. http://code.google.com/p/arduino/issues/detail?id=96 http://code.google.com/p/arduino/issues/detail?id=330
Replaced oro.jar regular expressions with java.regex ones (patch by Eberhard Fahle and Christian Maglie). http://code.google.com/p/arduino/issues/detail?id=171
Building the user sketch before the core or libraries, so errors appear faster. Patch by William Westfield and Paul Stoffregen. http://code.google.com/p/arduino/issues/detail?id=393
Setting application icon under Windows.

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DSO Nano V2 is now available at Micro4you Studio

2010-12-09T21:14:00.000-08:00

The new DSO Nano v2.0 from the Micro4you Studio is a digital storage oscilloscope designed for basic electronic engineering tasks. The Nano features an ARM Cortex™ M3 32 bit platform, which provides basic waveform monitoring. It has a 320*240 color LCD, micro SD card storage, portable probes, LiPo Battery, USB connection, and signal generator. Perfect for in-field diagnosis, quick measurement, and hobbyist projects.

DSO203 Oscilloscope

2010-12-06T22:52:00.000-08:00

Feature

2 Probe Connectors
4 inputs & 4 tracks (2 analog 2 digital)
A custom waveform output (including the built-in sine, square, triangle)
Built-in 2M USB disk
Very low power consumption

and more...detail will be showed soon.

Description

3" 240 × 400 widescreen color TFT LCD screen, STM32 is the master MCU, with the FPGA to implement the control and management of external ADC and data cache.
At the same time to reduce the size and easy to DIY manual welding, MCU and the FPGA are selected QFP100 package, ADC selected QFP48 package.
36M+36M sampling frequency, the use of the ADC AD9288-40 chip, single-channel maximum sampling frequency of the 72M.
FIFO RAM has a maximum operating frequency of use of> 200MHz low-power FPGA to achieve.
The AD9288-40 Overclocking to achieve 72M+72M sampling frequency, so that the maximum single-channel sampling rate up to 144M.
Analog channel circuit using unity gain> 150MHz op amp, so the actual 30MHz analog bandwidth is expected to do more.
As low power, low-cost, QFP package and other conditions of the FPGA, storage capacity is not large, so DSO nano v2 sampling depth of the current situation for the multi-channel 4096 points per channel, single-channel work cases, 8192 points.

Arduino 0021 now available

2010-10-04T18:17:00.000-07:00

Arduino 0021 is now available. Changes include:

Modifying VID / PID combination in 8U2 firmwares.
Fixing analogWrite() bug on pins 9 and 10 (Arduino Uno).
Patched RXTX to include /dev/ttyACM* on Linux.

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Arduino 0020 now available

2010-09-27T20:14:00.000-07:00

Arduino 0020 is now available. Changes include:

Added support for the Arduino Uno and Arduino Mega 2560.
Including ATmega8U2 firmware used by Uno and Mega 2560.
Including source code to optiboot bootloader used by the Uno.
Including source code to the stk500v2 bootloader used by Mega 2560.
New application icon (by ToDo).

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Maker Faire Presentation

2010-09-27T04:36:00.000-07:00

"State of Arduino" talk at World Maker Faire 2010 from adafruit industries on Vimeo.

Arduino 0019 now available

2010-09-04T03:23:00.000-07:00

Arduino 0019 is now available. Changes include:

SPI library.
The Ethernet library has been refactored to use the new SPI library. Existing sketches will need: #include added to the top of their code. Just select SPI from the Sketch > Import Library menu.
String class
A0, A1, etc. aliases for the analog input pins
shiftIn() function
Added Arduino Pro 5V and Arduino Fio to the boards menu
Added control over automatic scrolling and outgoing line endings in the serial monitor

see the full list in the release notes.

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Open Hardware Summit 2010

2010-08-26T19:48:00.000-07:00

The Open Hardware Summit will be a one day event held on Sept. 23rd at the New York Hall of Science.

http://www.openhardwaresummit.org