When using the LED display, it often appears that it cannot be loaded. From the following aspects to analyze the reasons why the LED display can not be loaded?
Graphite Powder soft, dark gray; greasy feeling, can contaminate the paper. Hardness of 1 to 2, along the vertical direction with the increase in the hardness of the hardness can be increased to 3 to 5. Specific gravity of 1.9 to 2.3. In the isolated oxygen conditions, the melting point of more than 3000 ℃, is one of the most resistant minerals. At room temperature, the chemical properties of Graphite powder is relatively stable, insoluble in water, dilute acid, dilute alkali and organic solvents; materials with high temperature conductive properties, do refractory materials, conductive materials, wear-resistant lubricating materials.
Graphite powder is widely used, according to its different use, we can be divided into the following categories of graphite powder
1. Scale graphite powder
Flake Graphite powder is the most widely used, but also processed into other graphite powder of the original material, scaly graphite powder specifications from 32 to -12000 mesh range, scaly graphite powder toughness is good, with good thermal conductivity and corrosion resistance, can be used as refractory Materials, wear-resistant lubricating materials, conductive materials, casting, Fansha, die and high temperature metallurgical materials
2. Colloidal Graphite powder
Colloidal graphite is formed by the average dispersion of graphite particles below 2u meters in an organic solvent. Colloidal graphite is a viscous suspension of black filaments. Colloidal graphite powder with high quality Natural Flake Graphite performance, in high temperature conditions with special oxidation resistance, self-lubricating and plasticity, at the same time with good conductivity, thermal conductivity and adhesion, mainly used in sealing, metallurgical stripping and other industries
3. Ultrafine graphite powder
Ultrafine graphite powder specifications are generally between 8000 mesh -10000 mesh, mainly used in powder metallurgy release agent, the production of graphite crucible, the battery anode and make conductive materials additives
Nano-graphite powder main specifications for the D30 50 100 400 nm, nano-graphite powder process is more complex, low production rate, so relatively high prices, mainly used in anti-corrosion coatings, lubricants additives, grease additives, precision graphite seal And other industries, in addition, nano-graphite powder in scientific research institutions also has a high application value
5, High Purity Graphite powder
1. Check if the jumper cap is loose or falling off; if the jumper cap is not loose, make sure the jumper cap is in the correct direction.
2. Check that the serial cable used to connect to the controller is a straight-through cable, not a crossover cable.
3. Check that the serial cable is intact and that there are no loose or falling ends.
4. Compare the LED display control software and the control card of your choice to select the correct product model, the correct transmission method, the correct serial port number, the correct baud rate and set the control correctly according to the DIP switch diagram provided in the software. Address bits and baud rates on the system hardware.
5. Make sure that the control system hardware is properly powered up. (+5V)
6. If the above check and correction still does not load, please use a multimeter to measure whether the serial port of the connected computer or control system hardware is damaged. To confirm whether it should be returned to the computer manufacturer or return the control system hardware for testing.
In short, the reason why the LED display is not loaded properly may be caused by the product itself, or it may be caused by improper operation during use. As long as you think carefully or ask the manufacturer, it is easy to find the root of the problem.
Graphite Powder
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Fengcheng Ruixing Carbon Products Co., Ltd , http://www.lnfcrxts.com