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Showing posts from December, 2016

Setting up TL-WPS510U Wireless Print Server

We have an HP LaserJet 1020 plus which we wanted to share on our network. Since this is a printer which only has a USB port, it can be shared by connecting it to a windows computer and sharing the printer via homegroup. But this required us to keep the connected computer on all the time.

So I decided to try out the TP-Link Wireless Print Server TL-WPS510U. In India it costs around ₹5000 and so it makes sense for anyone to go for this device to retro fit your old printer into a a network capable one.

But there is a caveat. The supplied CD which allows you to configure the software won't work on any PC. The TL-WPS510U is configured to join an "Ad-Hoc" WiFi network named WLAN-PS. The supplied software on your CD, makes your PC join this Ad-Hoc network and then sends commands and credentials to the TL-WPS510U over this Ad-Hoc network and instructs it to join to your home/office's WiFi network (i.e. your WiFi Router which operates in infrastructure mode).

Now now all WiF…

ESP8266 + DHT22 + Arduino + Web Server

So here is a modified version of how to get a DHT22 working on ESP8266 NodeMcu board using the Arduino IDE (not Lua)

The project is based on:
http://randomnerdtutorials.com/esp8266-dht11dht22-temperature-and-humidity-web-server-with-arduino-ide/

Get the components and assemble them. In India you can find these on VishaWorld.comNodeMcu ESP8266 | LinkDHT22 | Male-Male Jumper Wires | Bread Board | LinkMicroUSB cable | Assemble the circuit as shown. Connect the Data pin of SHT22 to D2 of NodeMcu (which is referred to pin 4 in Arduino IDE)Install the driver for USB-Serial chip on your PC:
http://www.silabs.com/products/mcu/pages/usbtouartbridgevcpdrivers.aspxInstall Arduino on your computer and install support for ESP8266 Board, refer:
https://learn.sparkfun.com/tutorials/esp8266-thing-hookup-guide/installing-the-esp8266-arduino-addonInstall the DHT-sensor-library-master library as outlined here:
http://randomnerdtutorials.com/esp8266-dht11dht22-temperature-and-humidity-web-server-with-arduino…