TC_Chu's Point

PCBMotor (Motor build on PCB Board)

he High Resolution Twin Motor Kit promises electronic application designers resolution precision, greater design flexibility and full holding torque even in power-off mode.
Engineers and designers, requiring micro-positioning accuracy and precision, now have the opportunity to build and test applications with resolutions over 2.6 million µpulses per revolution.

http://pcbmotor.com/

 

複雜機械的動畫表達

via mytechnologyworld9 -> More Interesting animation

Personal 3D Printer

http://pp3dp.com/index.php

這是好東西 誰去代理吧!

Glider that can land on a wire

In a project that's been ongoing since 2005, Rick Cory and Russ Tedrake have developed a mathematical model of how a bird lands on a wire and emulated the move with an autonomous glider.

via Engadget

sniff controller

via Engadget

測量鼻子的呼氣來控制輪椅(比用腦波要來的容易上手吧)

Arduino Counter for Stepping Motor Emulation (3)

加上去Sensor Output, 上圖是Pass Zero的Output 前半是正轉後半是逆轉

Download Counter-4-24-2010.rar

Arduino Counter for Stepping Motor Emulation (2)

移到Mega上去 可以Monitor 4個Channel 並加上去邊界設定 不過這樣一來 Sample speed會降到10K以下 我想再加上 Photo Sensor Ouput Emulation的話 應該會降到5K左右吧 這樣就不好用了 因為以一般的步進馬達一圈=200Steps 如果用16x微步的話就是一圈 3200 Clock 一秒才一圈太慢了 加上1:4的減速齒輪的話 一圈都要 12800 clock了 最少要做到20K左右會比較剛好 不過這樣一來 Arduino的速度16MHz 就不夠快了 要搬上Cortex-M3了吧

Download Counter-4-23-2010.rar

Arduino Counter for Stepping Motor Emulation

I have write a counter program on arduino to test my stepping motor control program before I got the mechanical from the hardware team. I call it "Motor Emulator". The signals are stepA as the Stepping motor's colock pulse and dirA as the motor rotate direction. The program can track 2 motor at the same time and the pulse rate up to 25KHz (my system's max speed is 20K Step/seconds)

If I use Arduino Mega, maybe I can track 4 motor at the same time.

The right one is the old model use 7-segments , the left one use lcd.

Actually there are still some function need to extend like generate a output when count reach certain count.(Emulate the photo sensor's detection of the mechanical ruler or initial position).

Download MotoSignal.pde <- this generat the signal

Download LCDCounter.pde <- this is the counter code

PS.我這個人最大的問題就是腦袋跑得比手快 這個東西剛開始要做7-Segment版的 才把東西接好 7-Segment driver 測過後就發現其實可以 Track 2顆馬達 這樣用LCD比較方便 於是就今天就直接用LCD的版本 不過其實並不是很想寫 因為晚上就想到 那乾脆用Graphic LCD版的話還可以劃出真正機械的位置....不過這樣下去沒完為了 (直接上PC是不是更方便) 加上手邊也沒有Graphic LCD模組可以馬上給Arduino用 就老實的把Counter寫完了

ChibiOS/RT another Free Embedded RTOS

Brief Description

ChibiOS/RT is designed for deeply embedded real time applications where execution efficiency and tiny code size are desiderable features.

The system is implemented as a library to be linked with the application code, the OS and the application code together form the image to be loaded on the target device.

Features

The kernel provides a rich features set, it offers: preemptive multithreading, 128 priority levels, optional round-robin support, unified interrupts handling, support for preemptable interrupt handlers, virtual timers, semaphores, mutexes, condition variables, synchronous messages, mailboxes, event flags, Abstract Channels, I/O queues, heap and memory pools allocators.

Of course, the above mechanisms are not always required in most applications, it is possible to selectively exclude the unused subsystems reducing the total code size.

Size

The kernel is very compact, on a reference Cortex-M3 (STM32) platform the kernel size ranges from 1.2KiB minimum up to 5.2KiB maximum size. Size metrics are available for all platforms, as test reports, into the source distribution.

Performance

On a reference STM32 platform clocked at 72MHz the kernel is capable of context switching in 1.41 microseconds, taking/releasing a semaphore takes 1.21 microseconds, spawning a thread (the whole create-execute-terminate cycle) takes 4.64 microseconds.

The timings are measured using the internal test suite, it is possible to inspect the benchmarking methodology and replicate the results by simply running the included demos. Performance metrics are available for all platforms, as test reports, into the source distribution.

http://chibios.sourceforge.net/

Liquid Level Detection

Capacitive liquid level detection  A weak electrical potential is created between the pipetting channel and the labware carrier.  When using conductive tips (black) and an ionic liquid the capacitance of the circuit is measured.  From this data the software can determine the hieght of the liquid surface and take appropriate action.

Pressure liquid level detection  A pressure transducer inside the air displacement channel measures the pressure inside the barrel during pipetting.  The data from this sensor changes as the tip approaches the liquid surface, touches the surface and drives below.  This data can be used to control pipetting in real-time.  Pressure level sensing is the only way to determine the level of non-ionic liquids.

via hamiltonrobotics

Universal Pipette Module

真是麻煩的東西ㄚ這樣的東西又叫作 Liquid Handling Robotics

NEWS - NASA enlisted to study Toyota throttles

By George Leopold

Automotive DesignLine

(03/30/10, 08:23:00 H EDT)

U.S. automotive safety regulators have enlisted NASA scientists to help solve the mystery surrounding Toyota's electronic throttles, and whether they are the cause of runaway vehicles.

Transportation Secretary Ray LaHood also said experts from the National Academy of Sciences will examine the problem of "unintended acceleration" across the auto industry.

The National Highway Traffic Safety Administration will work with NASA engineers specializing in electronic systems, electromagnetic interference and "software integrity," the agency said Tuesday (March 30).

The government will spend about $3 million on the NASA and academy studies, a pricetag that includes purchasing the alleged runaway Toyotas.

One place government engineers should focus on is firmware in Toyota's electronic control units. I've been unable to confirm speculaton that this is a possible source of Toyota's throttle problem.

Please log on to our forum if you've heard anything about troubled firmware or any other possible causes for faulty Toyota electronic throttles.

via Embedded Technology Journal

A Bendable Heart Sensor

Beat box: This implantable medical device bends and twists, thanks to transistors made of ultrathin ribbons of silicon. The electrode array shown here has 288 electrodes that can maintain contact with a heart even as it beats.
Credit: Science/AAAS

via MIT Technology Review

The Slow Rise of the Robot Surgeon

via MIT Technology Review

More Picture...

My Quadrature Motor Encoder

Arduino Quad Encoder Output Simulation

Download EncoderSim.rar

For test the R8C/27's Quad Encoder decoder code.

R8C Tiny Reading Rotary Encoders

//Encoder
#include "rskr8c27def.h"
#include "ior8c26_27.h"
#include "digitIO.h"

#define encoder0PinA 15  //INT1
#define encoder0PinB 33  //INT3

#define RawPinA      p1_5
#define RawPinB      p3_3

int encoder0Pos ;

void encoder_init()
{
 
  //**************************************
  //    INT1 Interrupt Setting
  //**************************************
  //Note: Set INT1 hardware interrupt pin to input
  //Note: By default, INT1 pin is at P1_7 pin
  //To change to INT1 pin at P1_5 pin, set tiosel_traioc=1
  //To change to INT1 pin at P3_6 pin, set int1sel=1
 
  int1ic=0x04;                            
  //Set interrupt priority level and active edge(int1ic bit 0, 1, 2 and 4)
  int1en=1;                               
  //Input enabled(inten bit 2)
  int1pl=1;                               
  //Both edges selected(inten bit 3)
  int1f0=1;int1f1=0;                      
  //Filter with f1 sampling selected(intf bit 2 and 3)
  tiosel_traioc=1;                      
 
  //**************************************
  //    INT3 Interrupt Setting
  //**************************************
  //Note: Set INT3 hardware interrupt pin to input
  int3ic=0x04;                            
  //Set interrupt priority level and active edge(int3ic bit 0, 1, 2 and 4)
  int3en=1;                               
  //Input enabled(inten bit 6)
  int3pl=1;                               
  //Both edges selected(inten bit 7)
  int3f0=1;int3f1=0;                      
  //Filter with f1 sampling selected(intf bit 6 and 7)

  encoder0Pos = 0;
 
}

void encoder_stop()
{
  int1en=0;
  int3en=0;
}

void encoder_start()
{
  int1en=1;
  int3en=1;
}

void encoder_reset()
{
  encoder0Pos = 0;
}
#pragma vector= INT1
__interrupt void INT1_ISR(void)
{
  // look for a low-to-high on channel A
  //if (digitalRead(encoder0PinA) == HIGH) {
  if (RawPinA == 1) {
    if (RawPinB == 0) {
      encoder0Pos = encoder0Pos + 1; // CW
    }
    else {
      encoder0Pos = encoder0Pos - 1;  // CCW
    }
  }

  else   // must be a high-to-low edge on channel A                                     
  {
    if (RawPinB == 1) { 
      encoder0Pos = encoder0Pos + 1;  // CW
    }
    else {
      encoder0Pos = encoder0Pos - 1;   // CCW
    }
  }
}

#pragma vector= INT3
__interrupt void INT3_ISR(void)
{
  if (RawPinB == 1) { 
    if (RawPinA == 1) {
      encoder0Pos = encoder0Pos + 1;  // CW
    }
    else {
      encoder0Pos = encoder0Pos - 1;   // CCW
    }
  }

  // Look for a high-to-low on channel B

  else {
    if (RawPinA == 0) { 
      encoder0Pos = encoder0Pos + 1;  // CW
    }
    else {
      encoder0Pos = encoder0Pos - 1;   // CCW
    }
  }

}

via Arduino

Touch Bionics offers ProDigits for those missing their amateur ones

via Engadet

Eureqa discovers equations

via Hack A Day

Eureqa Home Page

B2 Spice v.5 Electronic Circuit Simulation Software

Simple Spiace Simulator

Home Page

糞便潛血 明年免費擴大檢查

〔記者魏怡嘉／台北報導〕自明年一月起，五十歲到六十九歲民眾，每兩年可到醫療院所做免費糞便潛血檢查，以利早期發現是否罹患結直腸癌，不過民眾需要付掛號費；如果想省錢，可以轉到各縣市衛生所做，有些衛生所不收費，或是酌收一些費用，但大多數比各醫療院所的掛號費便宜。

衛署國健局癌症防治組科長施伶宜表示，目前免費糞便潛血檢查，主要是跟各縣市衛生局合作，由於經費有限，每年大約只能做二十萬到三十萬人，每年的篩檢率只有五％。

via 自由時報

原來那台機器商機在此....

The CAD System For Everyone

Main Features

    * Layers
    * Blocks (grouping)
    * 35 CAD fonts included
    * Metrical and Imperial units
    * DXF input / output
    * Printing to scale
    * Over 40 construction tools
    * Over 20 modification tools
    * Construction and modification of points, lines, arcs, circles, ellipses, splines, polylines, texts, dimensions, hatches, fills, raster images
    * Various powerful entity selection tools
    * Object snaps
    * Measuring tools
    * Part library with over 4800 CAD parts
    * Scripting interface

via Ribbonsoft

障害者を支援する研究開発中のデバイス by 東大先端科学技術研究

振動子。表面に指を置く形で、8×2の小型ピンが振動することで、指先にバイブレーションを感じさせる

via Robot Watch

Microfluidic chip

via Engaged

另外一個新Keyword "Lab Automation" 算是公司的市場領域