Animation laser,Beam laser ,Sound Active, AUTO,DMX512

We would like to introduce our company and products, hope that we may build business cooperation in the future.

We are factory specializing in the manufacture and export of stage laser light for more than five years.

We have profuse designs with series quality grade, and expressly, our price is very competitive because we are manufactory, 

we are the source. You are welcome to visit our website http://www.casa-laserlight.com which includes our company profiles, history and something latest designs.

Should any of these items be of interest to you, please let us know, We will be happy to give you details. As a very active manufactures, we develop new designs nearly every month,

If you have interest in it, it`s my pleasure to offer news to you regular.

 

New Arrival

We are a professional dj lighting manufacturer in China. This 4 lens RGVY is one of our best selling products.
If you are interested in our products, don’t be hesitate to contact us. Hope we can build good business relationships with you!                                                                                                                                                          
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Introduction of Blue laser

A blue laser is a type of laser that appears to be blue in color. Its light emits a wavelength band of between 360 and 480 nanometers. These blue lasers can have applications ranging from optoelectronic data storage to the medical field.

The blue laser was discovered in Japan by individual researchers and an electronics company. It resulted from years of attempting to develop a blue light-emitting diode (LED). Its successful development can be attributed to the use of gallium nitride crystals rather than zinc selenide, which had been the normal course that previous researchers had taken while trying to develop the blue laser. Though blue lasers technically can provide light at wavelengths between 360 and 480 nanometers, blue lasers generally emit light at 400 nanometers.

Although many people who refer to blue lasers have lasers that are truly blue in mind, blue lasers are closely related to violet lasers as well. In fact, a popular “blue” laser that operates at 405 nanometers is actually violet. The public can confuse this violet laser with a blue laser because the two types look very similar to the human eye. When looking at a 405 nanometer light, people can mistake the florescence for a blue color; as a point of reference, black lights also can trick the human eye in the same way. It could be said that people are looking at true blue light colors only when they are viewing a light with a wavelength of between 450 and 460 nanometers.

The practical applications for blue lasers are many. The telecommunications, information technology, environmental monitoring, medical diagnostics and electronic equipment industries all have benefited from blue light lasers. Micro projectors and displays can use blue lasers for operational purposes.

Blue lasers also have changed the way consumers experience entertainment. A blue laser makes high density (HD) digital versatile disc (DVD) data storage and Blu-ray™ technology possible. Its shorter wavelength than other types of lasers is what provides this capability, because lasers of shorter wavelengths can read increased concentrations of information off the discs.

Standard laser pointers also come with a blue laser option. These blue lasers can operate with a 473 nanometer wavelength. For those who tire of the red and green laser alternatives, a blue laser can provide a bit of uniqueness to laser use. However, because they use a newer technology, blue lasers might be a more expensive choice.

DMX 512 Physicals

In fact so many stage lights support DMX512. Most of stage lights must have this function.

The DMX bits are also represented by a digital high (HI) or a digital low (LO).The actual DMX output transmits these HI and LO signals in an electrical form that is explained in the page -

DMX512 PHYSICALS

The DMX data stream clocks out at the rate of 250Khz which means each bit is measured at 4 micro seconds widths.

1) IDLE or NO DMX situation:
In the absence of a valid DMX packet the output of a DMX line will be a continously HI signal.

2) BREAK
The start of a DMX packet is heralded by the output going LO for a MINIMUM period of 88 microsecs. This means 22 LO bits are measured out one after the other. This is known as the BREAK. The BREAK could be longer but not less than 88 microsecs. Experience shows that slightly longer breaks (above 88 microsecs) sent from a console are better since the receiving devices are generally given the algorithm = “Is the BREAK>88 microsecs or 22 pulses”. I keep it generally at 100 -120 microsecs in equipment designed by me

3) MARK AFTER BREAK (MAB)
The MAB immediatly follows the BREAK by making the output go HI for a MINIMUM period of 8 microsecs or 2 pulses. This MAB is a bit of a problem since the difference between the original DMX512 and the current DMX512(1990) standards relate to this period of the packet. The original was set at 4 microsecs or 1 pulse. This created hassles for some receivers for being too short a MAB for detection and was upgraded to 8 microsecs or 2 pulses in 1990. The problem comes when a older console is used with newer receivers or vice versa.Wrong detection will lead to packet rejection or the wrong data going to the wrong channel. This will travel down the line leading to utter confusion. Some receivers have a dip switch to set this parameter for both timings. Again the maximum MAB length could be 1 sec.
My ideal timing would be 12 microsecs.

4) START CODE (SC)
The SC is next in the line. It is easier to remember that the SC is the start of the actual data stream where all individual channel data have the same format. The BREAK & the MAB were of different timings but the SC onwards all frames will have the same structure and timing of 11 pulses or 44 microsecs width. The first one can be termed as data for channel No 0 which is a non-existent channel and represents the SC.

I will first describe the general structure of these channel data frames:

-Of the 11 pulses the 1st one is always LO signifying the Start bit .

-This is followed by the actual data byte of 8 bits (which could be any of 256 values from 0 to 255).

-The frame ends with 2 bits which are HI signifying the two stop bits and end of the channel information.

Channel No ’0′ is the SC, which as things stand, ALWAYS has the databyte = 0 signifying that the following data is for dimmers. As per the current standard, no other value can be used. The option is left open and as and when ESTA specifies, the SC value may be used to tell the receiver that the data following it is meant for a specific type of receiver. That is the end purpose of having the SC….. to be able to segregate a packet of data, receiverwise. But, for the moment, it’s zero which has been specified for dimmers by ESTA. Do remember that this also includes just about any receiving device like dimmers, moving lights or whatever !

5) MARK TIME BETWEEN FRAMES (MTBF)
The mark time between frames can be from a little more than 0 sec to upto 1 sec, but the lesser the better. Each channel frame can have the MTBF before the start bit. The MTBF is obviously HI .

6) CHANNEL DATA (CD)
The CD frames follows the SC frame in a logical manner from 1 to 512 (or less) in the form described above.

7) MARK TIME BETWEEN PACKETS (MTBP)
After the last valid CD stopbits are sent, one full packet is completed and the next packet can start with a fresh BREAK & MAB. However an idle (HI) can be inserted between packets (MTBP), the lenth of which may be a little more than 0 sec to upto 1 sec. It is upto the console designer to design the architecture of the console and the software powering it in such a manner that the data thruput time is at a minimum.

 

When a stage laser light have DMX function, it can be controlled using DMX console.

 

 

 

 

SD card Animation DJ laser Light Driver Schematic

In this case, we Adotps STC12C5A60S2 as MCU. This MCU is 8~12 times faster than a regular single-chip.

Actually our engineer have finished 80%. We abandon to research finally. So We would like to share with you our research and development experience.

SD Card Schematic:
SPI communication because you are using a SD card, SD card slot 8,9 feet were useless, but also through 10K high resistance. CS chip select lines and SCLK clock line, data input lines MOSI, MISO data output lines (input/output as opposed to SD card) four signal wires directly with four in MCU SPI communication pins connected to the four pin 10K through high resistance to 3.3V, SD card meets the level compatible with the MCU principles, you can communicate properly. SD card slot 10 feet and 12 feet are used to detect whether the inserted SD card and the SD card is write-protected, useless.
SD ard

Schematic
 

Demo PCB
SD car Laser Software Demo PCB


Power
Board entrance voltage is 15V, directly power a TL084 through 7,805 to 5V, MCU and other chip circuits.
 

Source Code

/*****************************************************************
*sd_init(void):初始化SD卡,使其进入SPI模式                      *
*入口参数:无                                                    *
*返回参数:uchar                                                 *
*往SD卡发送初始化命令CMD0,CMD1。                     			 *
*****************************************************************/
uchar sd_init(void)
{
uchar cmd[]={0x40,0x00,0x00,0x00,0x00,0x95}; //CMD0
uchar i=0;
//uchar j=1;
sd_cs=1;
sd_mosi=1;
sd_miso=1;
for(i=0;i<15;i++) sd_rw(0xff); 

if(sd_cmd(cmd)!=0x01) return 0;	  //等待SD卡正确回应0x01
sd_cs=1;
sd_rw(0xff); 

i=0;
cmd[0]=0x41;cmd[5]=0xff;    //CMD1
while(sd_cmd(cmd)!=0X00) if( (++i)>200 ) return 0;//等待SD卡正确回应0x00
sd_cs=1;
sd_rw(0xff);
return 1;
}

This Board can read ILDA file in SD card,and output data to Scanner.

Below ILDA Laser Lights  adotps this techonology . They are CTL-BY,CTL-HP,CTL-HL.

Discussion on TTL Logic signal voltage levels

Laser Driver engineer frequently encountered TTL design problems.As to laser light may occur cannot be completely closed.

TTL gates operate on a nominal power supply voltage of 5 volts, +/- 0.25 volts. Ideally, a TTL “high” signal would be 5.00 volts exactly, and a TTL “low” signal 0.00 volts exactly. However, real TTL gate circuits cannot output such perfect voltage levels, and are designed to accept “high” and “low” signals deviating substantially from these ideal values. “Acceptable” input signal voltages range from 0 volts to 0.8 volts for a “low” logic state, and 2 volts to 5 volts for a “high” logic state. “Acceptable” output signal voltages (voltage levels guaranteed by the gate manufacturer over a specified range of load conditions) range from 0 volts to 0.5 volts for a “low” logic state, and 2.7 volts to 5 volts for a “high” logic state.

It is Hard to do in the actual design of perfect. Laser driver Board may 0.8V is considered to be high-Level, but some designs may 3.6V is still considered to be low-level. Resulting in some laser tube cannot be completely closed.

So different design engineers may be completely different.