User:Rwblackmore/ENES-100/project 1 Rectenna

My Instructor's user page which points to this.



Week4 Narrative
''ENES 100 – 503

Group 2

Honeybadgers Engineering Proposal Rectenna Group The project we chose for our group was the rectenna. We will be creating a regulator/rectifier for the purposes of converting the A/C voltage into useable D/C current to charge a phone from an antenna using a change pump. This will all occur wirelessly; without the use of wires and cables. Not only does this project interest us as a group, but it seems difficult and should keep our interest. We will utilize wikiversity and our own notebooks to record and describe our processes throughout this project. Daily and weekly reports will be made and achievements and failures will both be equally highlighted.

Develop a block diagram for rectenna system and determine the scope of the project

1.	Develop a list of tasks/Assign tasks among team members of project

1.	Keeping up to date with the group wiki page (To include a daily update of what we accomplish in each of those days) (Chan) 2.	Electrical circuits understanding (Sam) 3.	Finding accurate pictures to associate with our project (All) 4.	Research and development (Wiki page links, youtube links, etc) (All) 5.	Writing the papers and associated documents (Bob, Jen) 6.	We need a 915 MHz router (Chan) 7.	Tools (Bob) 8.	Electrical supplies (Bob) 9.	 Write the proposal (Bob, Jen) 10.	Get a whip antenna (Bob) 11.	DIY PCB Double-sided Prototyping Board (5x7cm, Pack of 10) Amazon



2.	Parts list, Equipment list and Budget 915MHz router Phone Copper wires Tools: Screwdrivers Blade (for splicing wires) Wire strippers Soldering iron Multimeter Heat gun Electrical parts: $Copper foil $PSU $Resistors $Transistors $Diode $LEDs $Capacitors $Prototype board 5x7cm pack of 10 (Amazon.com) $Soft Copper Tubing 1/4-Inch OD x 10-Foot Coil with Caps On Both Ends (Ebay) $Magnet Wire 28 Gauge AWG Enameled Copper 1000 Feet Coil Winding 155C Red

3.	Prepare a schedule for hardware and software development and testing Week 1: We will fill out the proposal. Write in our notebooks. Project 4. Look online to find compatible parts. Week 2: More information, getting parts like the base, whip antenna, circuit board, and R/R Week 3: Begin putting together the whip antenna with the base/Setup the RR/Setup Jay’s diode and AC to DC converter. Week 4: Have the router power being generated Week 6: Be able to receive the energy from the transmitter Week 7: Be able to convert the received energy and convert to DC Week 10: Finished project/Presentation

4.	Milestones and Deliverables

Basestation and whip antenna setup Diode and converter hooked up to RR Showing power converting Showing that the phone is charging Finished Product

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Week5 Narrative
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Items we need from Amazon: 1.	Transmitter/receiver (We already have the Arduino UNO board) (NEED 2 OF THESE PLEASE) http://www.amazon.com/SMAKN-NRF905-PTR8000-wireless-transmission/dp/B00EJ9HN62/ref=sr_1_2?ie=UTF8&qid=1411481349&sr=8-2&keywords=NRF905+%28PTR8000%2B%29 (Below is a diagram showing the Arduino hooked up. We will be using a whip antenna and our dongles instead of the second Arduino shown. http://taillieu.info/index.php/hardware/110-nrf905-wireless-module-ptr8000-wireless-transmission-module-nf905se-band-antenna-c3b5

Wire for the antenna: http://www.amazon.com/TEMCo-AWG-Copper-Magnet-Wire/dp/B00LV8Z7OY/ref=sr_1_2?ie=UTF8&qid=1411481296&sr=8-2&keywords=magnetic+copper+wire+28+gauge PCB boards: http://www.amazon.com/Vktech-10pcs-Circuit-Prototype-Solder/dp/B00COGPZFS/ref=sr_1_3?ie=UTF8&qid=1411482339&sr=8-3&keywords=pcb ''

Week6 Narrative
''This week I have been working with the Arduino mostly, and the last week. I have posted numerous times on the Arduino forums in order to learn how to make the transmitting loop that I want. I found a library nRF905 that should work fine for the transmitters we have. I also found a nice example on electrodragon referring to the nRF905 transmitter.  http://blog.zakkemble.co.uk/nrf905-avrarduino-librarydriver/  http://www.electrodragon.com/w/index.php?title=NRF905_Transceiver_433MHz-Wireless_Module  https://github.com/zkemble/nRF905''

Week7 Narrative
''This week I continued to post on the Arduino forums and finally came across a bit of luck with the programming! I think I have it transmitting but I need to get in to class to test with another Arduino. Got into class today and tested the two arduinos together using a simple ping/server program in the examples. So far we are able to ping them, Sam and I. Now I just need to make sure the default transmitting frequency is 915Mhz or change it to that, and max out the power to hopefully 10dB. Once that's done I can start working with Sam on the rest of the project.  ADD PICTURE OF CLIENT/SERVER PINGING ON ARDUINO''

Week8 Narrative
''This week so far I have continued working on the Arduino in the forums asking many questions. I'm trying currently to make sure that the nRF905 is TXing @ 915MHz and not 433MHz, which is the default I believe. I also want to send it at max power which SHOULD be 10mW. I added a couple of commands that I think will accomplish this but I am double-checking with the people that know. We will also be working with powerpoint today to prepare for the presentation we will be giving on thursday.  On Thursday we worked on the powerpoint presentation getting it ready for the oral presentation. Sam worked on the schottky diodes today and had some issue sgetting it connected without breaking the prongs. We also posted more questions on the arduino forums about the transmisison coding.   http://forum.arduino.cc/index.php?topic=274397.msg1936890#msg1936890 Ran into some issues today and found out that the ping server/client .ino examples don't seem to be working correctly. Even when I unhook one it still says "got ping" for both of them. This means that my previous testing was incorrect and I'm not sure it's transmitting at all. If I cover the antenna it stops pinging which leads me to believe something is happening but I'm not sure what." 

Week9 Narrative
Worked with Jey this morning to make the schottky diode without burning it up. Worked, however, the resistance is around 90k ohm and I don't know if that will work. Currently I am working with Sam to get the capacitors and diodes needed for the voltage multiplier. Sam and I put together the multiplier (mostly Sam) but we didn't have a chance to test it yet. I will post a picture of the finished breadboard thursday and we should test it then as well. 

Week10 Narrative
This week we started working with Jey who picked up some SMA parts for us. We took the baseplate, drilled a hole through it, then connected the SMA connector to it. After that we connected the antenna and used a cardboard tube underneath it to keep it from snapping off on the underside. Now we need to start working on the Schottky Diode and multiplier circuit to finish the project.

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