Arduino weather station with RF433 MHz modules


by eliesalame @

In this project I will show you how make two Arduinos talk to each other using RF frequency (wireless).

Now I will use the knowledge in all these project and improve on them by making one Arduino send data to another Arduino wirelessly using an RF433 module and displaying it on I2C serial LCD.

Arduino weather station with RF433 MHz modules – [Link]

Water Cooled Silicon Chips are reality


Georgia Institute of Technology managed to cool FPGA trasistors using water, they announced:

Using microfluidic passages cut directly into the backsides of production field-programmable gate array (FPGA) devices, Georgia Institute of Technology researchers are putting liquid cooling right where it’s needed the most – a few hundred microns away from where the transistors are operating.

Combined with connection technology that operates through structures in the cooling passages, the new technologies could allow development of denser and more powerful integrated electronic systems that would no longer require heat sinks or cooling fans on top of the integrated circuits. Working with popular 28-nanometer FPGA devices made by Altera Corp., the researchers have demonstrated a monolithically-cooled chip that can operate at temperatures more than 60 percent below those of similar air-cooled chips.

Water Cooled Silicon Chips are reality – [Link]

WireFrame FPGA Board , Breadboardable Xilinx XC3S250E Board

xilinx fpga board wire frame xc3s250e breadboard fpga (1) has build a small FPGA board based on Xilinx  XC3S250E :

I have built a little FPGA board Xilinx xc3s250e called WireFrame. the board is only 500mm x 25 mm in size and it is possible to put it breadboard. board has 32MByte SDRAM, 4MByte serial Flash for storage. total 3 2A max each Switching regulator for Vcc I/O 3.3V (adjustable trough regulator feed back resistors), VCCAUX 2.5 V and VCCINT 1.2v.

WireFrame FPGA Board , Breadboardable Xilinx XC3S250E Board – [Link]

Have you tried Serial to Ethernet communication?


More than 50 developers tested Wiznet modules during Pizza workshops in Brno, Bratislava and Budapest.

The main topic of Pizzaworkshop was Ethernet communication via Wiznet modules. Developers had a chance to test how fast and simple it is to connect the device to Ethernet and all of this was led by Joachim Wülbeck from Wiznet.Developers also tried working with EVB kits WIZ550S2E, as well as innovative WiZwiki-W7500. There were also answers for many questions about settings, programming, sending and receiving serial data via Ethernet, as well as troubleshooting the proposed applications.

Pictures will tell you more about how it looked like during the workshop… :-)

Do you like our Pizzaworkshops?

Do not miss our next workshop in October with Lantronix. Sign up today. Number of seats is limited.

Have you tried Serial to Ethernet communication? – [Link]

DIY Infrared Remote Controls


by Jason Poel Smith @

Halloween is the perfect opportunity to create fun special effects. When you want to be able to control props and effects remotely, one good option is to use an infrared remote control. In this project, I’ll show you some simple remote controlled effects that you can set up in your haunted house this year.

DIY Infrared Remote Controls – [Link]

Decoding and sending 433MHz RF codes with Arduino


by liwenyip @

In this tutorial I’ll show you how to use an Arduino to decode signals from RF remotes, and re-send them to remotely control some mains switches and a garage door.

Decoding and sending 433MHz RF codes with Arduino – [Link]

Building the Colossus LED Display

by Adam Haile @

The 2014 NC Maker Faire was a huge turning point for Maniacal Labs. It was there that the idea for the AllPixel and what is now BiblioPixel got their start. It’s also where we showed off our first custom-built LED display, the 24×24 LPD8806 matrix. At nearly 24 inches square, and 1 pixel per inch, it was certainly impressive. But we left the Maker Faire with a desire to go bigger. Not just more pixels… but physically larger. Much larger. We call it “Colossus”.

Building the Colossus LED Display – [Link]


Arduino based MPPT solar charge controller

20150805_151734 copy

by Abid Jamal @

what is Mppt( Maximum power point tracking) ?
“we use MPPT algorithm to get the maximum available power from the Photovoltaic module under certain conditions”

How MPPT works ? Why 150W solar panel does not equal to 150 w?
For example you bought a new solar panel from the market which puts out 7 amps. under charge the setting of a battery is configured to 12 volts : 7 amps times 12 volts = 84w (P=V*I) You lost over 66 watts – but you paid for 150 watts. That 66 watts is not going anywhere, but it,s due to the poor match of the solar output current and battery voltage .

Arduino based MPPT solar charge controller – [Link]

Multi Channel Datalogger with OLED Display


by Jed Hodson @

A 3 Channel Datalogger Powered by the LinkIt One. This device can log data from 2 Analog Inputs and 1 Digital Input / Output with PWM capabilities. The Device syncs time from GPS and makes use of the on-board battery to make it become even more portable. With an OLED Display to show system information and live data feed, along with the option to force an update all controlled via the 1 Button. The data file is stored on the LinkIt One’s internal storage and saved as a CSV file so it can easily be read by a text editor or a more powerful program (such as Excel). Fully Customizable and with room to expand all via the software that makes it run.

Multi Channel Datalogger with OLED Display – [Link]