How to setting my computer for internet using modem ZTE F660

How to setting my computer for internet using modem ZTE F660

ZTE F660 setting 4:11:00 PM

Here to setting personal computer to go online using Xampp for hosting application using modem ZTE F660. Please follow the simple 7 steps:

1. Make sure your computer already have the Xampp application installed and ready for localhost using local IPaddress. Let's say your local IPaddress  is 162.101.5.6
2. Make sure you already have an account in http://no-ip.com, for sample URL address I used http://serverid-computer.ddns.net which is aliases for your omci_ipv4_pppoe_1 IPaddress. If you don't know your modem IPaddress, please click this link. It can be used free for 30 days only.
3. Entry to your modem, in my case I modified the Local IP address to 162.101.5.1 and please use the user admin:
   
   
   
4. Now, we wanna do setting on your modem F660 series. Firstly we'll do checking the status network interface and make sure the IP Address of PPPoE is same with your modem IP address getting from myip.com otherwise will difficult to connect it. 
   
   
   
5. Go to Network menu and follow the below settings:

   

   
   

   

   
   

   

   
   
6. Now Go to Application menu for final settings.

   

   
   

   

   
   

   

   

   
   

   
   
7. After setting the DDNS completed from no-ip.com then put that one on DDNS application, DNS service IP address to assign your personal computer to be online, and for the last do setting is Port Forwarding. That's all then your PC should be able go for online. To test it please your phone with internet access on different network.

How to convert signal NPN (Positive common) to PNP (Negative common)

How to convert signal NPN (Positive common) to PNP (Negative common)

3:19:00 PM

The proximity switch sensor is generally a switch to disconnect the positive signal DC voltage to the PLC. However, if the PLC input used is common negative, then the sensor used is the NPN type, because this sensor will work well to break the negative relationship with the trigger base is positive.

For example, if we experience a failure from a PNP sensor and do not have spare parts of the same type, sometimes the signal conversion trick can be used. This is very easy to do if we know the working principle of both PNP and NPN type sensors. From the description above, to change the sensor output signal which breaks the positive relationship (PNP), we need an NPN type resistor and transistor, for example the TIP31C (capable of passing about 2 amperes more).

Here I will provide a simple circuit to convert the signal from an NPN type to PNP sensor with a TIP32C transistor and a 1K resistor. The sensor used previously was the SICK sensor with no. series WL9-3P2232 (PNP), because I didn't get it, I replaced it with the NPN type, but it had to be converted in order to break the positive relationship. Here's the series: