Easy to Build WIFI 2.4GHz Yagi Antenna.pdf

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WE-2705P Anten An tenn na Analyz Analyzer er w w w .rfequip .rfequipm ment.co. ent.co.uk uk 1.5 - 2700 MHz. MHz. Robust, ac curate, compact, handheld. £1125.00

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GCC LaserPro Laser system About About This Instructable

This This antenna w ill ill extend the range of your WiFi WiFi or 2.4GHz 2.4GHz dev ices (like surveillance cameras) into many miles miles and kilom kilometers. eters. A yagi antenna is basically a telesc ope f or radio w aves. I tired tired the pringle pringle can antenna and the Yagi beats it hands dow n in performance.

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Easy to Build WIFI 2.4GHz Yagi Antenna by Biotele (/member/Biotele/) Download (/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/?download=pdf) (/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/?ALLSTEPS)

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Related 2.4GHz Yagi in a Can (/id/24GHz-Yagi-in-a-Can/)

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This is an absolutely easy project.

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Long Range Yagi Antenna 19 Element 2.4GHz (/id/Long-Range Yagi-Antenna-19 -Element-

You need an ink jet printer/ Computer Popsicle sticks White glue Crazy glue Big paper clips (you could use any s tiff solid metal w ire instead) USB WIFI, pref erably w ith an antenna extension OR a 2.4 GHz device soldering iron and lead Sanding papers Scissors Pliers or pref erably a nibbler (see photo below , available at radio shac k) a metric r uler w ith millimeters or a metric caliper.

Bi-Quad WiFi Antenna (/id/Bi-Quad-WiFi-Antenna/)

by TheGoodLif e (/member /TheGoodLife/)

The Conetenna - a wi-fi antenna (/id/TheConetenna---a-wi-fiantenna/) WiFi c antenna w ithout pigtail (/id/WiFi-Cantennawithout-pigtail/)

by TheGoodLif e (/member

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Easy 2.4GHz Yagi Antenna by Biotele (/member/Biotele/) 134to Build WIFI /?&sort=ACTIVE&limit=40&offset=40#DISCUSS) Download (/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/?download=pdf) Saarducci (/member/Saarducci/) says: (/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/?ALLSTEPS) 8 Steps (/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/step2/Buildin g-Overview/) Reply (CFPF7NGHLSGSBH3) Sep 21, 2013. 1:35 AM Okay well I read through the entire post and I saw many things that

(/member made a lot of sense, also saw a lot of /Saarducci/)

unnecessary flaming, but I do have a few comments to make. Right off the bat the one individ ual that a sked about having hi s modem i n the basement with a rotating an tenna on he roof needs a reality check. Overlooked in the conne cting the USB dongle to the antenna was the ransmission line length, for these frequenci es it shoul d be as short as possible and a mu ltiple of 1/2 wavelen gth I'd suggest as close to 2.41 inches as one could manage (use a small diameter 50 ohm coax). Take the do ngle a part and connect a USB extension cable to it and m ount it directly on the antenna assembly. Paper cli ps vs copper, at thi s frequency it's not going to make much difference, however the specific model was generated using 14awg copper. Someone said glue i t all to cardboard then cover it with more cardboard actually a strong and stable design, original author said build around popsicle sticks(wooden), both are subject to absorbing moisture from the a ir and e ither can have a poor diel ectric constant, I would sugge st some kind of pl astic (they make popsicles with pla stic sticks). The len gths of the el eme nts, he spacing between them, and keeping them all in the same pla ne and paralle l to ea ch other is the most important consideration. T he driven elemen t, #2 in this design: that one I would make from 14awg copper, I'd make a simpl e dipo le rather than a folded d ipole, I would take two pieces of wire ma ke 90 degree bends in them cut the bent part to about 1/8 inch and attach my transmission line. Take a p iece o f hea t shrink cut two notches in it abo ut 1/4 inch apart and insert the wires into it an d shrink it, maybe reinforce the space i n the center (break a tooth from my comb and stick it in the midd le before heating the shrink?) cut it down to the correct overall length and insert it last. If you use the fold ed dip ole make sure the folded part is perpendicular to the pl ane of the rest of the antenna an d use 300 oh m twin lead to connect to the dongle, but your SWR will probably be much higher, reducing your effective gain and possibly resulting in early failure of the dongle. Horizontal vs vertical, after you have your antenna connected and have connected to some network you can try rotati ng i t about its horizontal axis to see if you can get a b etter aspect on the o ther antenna (more bars). All in a ll thou gh good jo b to Biotele, i t's cheap, it's easy, and if done right will provide excellent results. I did not buil d this

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antenna, but I built 2 antennae very simil ar before reading this post, My son and I live al most 2 miles apart and either of us can stream 1080p movies from the other's house during a by Biotele (/member/Biotele/) hunderstorm.

Easy to Build WIFI 2.4GHz Yagi Antenna

Download (/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/?download=pdf) (/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/?ALLSTEPS) 8 Steps michi (/member/michi/) says: Nov 2, 2013. 12:36 PM

(/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/step2/Buildin g-Overview/) Reply (CSS55RXHNICS2CY )

Please provide better pictures, I can see absolutely nothing here...: Step 7: Connect the Ante nn a to the Wifi Mo dem , fi rst pi cture. Whi ch wi re go es were?

6 (/member /michi/)

michi (/member/michi/) says:

Nov 1, 2013. 12:56 PM

Reply (C1ER93JHNHOR0KU)

I did built this antenna, but it does not work. There is absolutely no gain. Instead it is worse hen before. It is also not clear how you need to solder the antenna to the board. One wire, two wires?

6 (/member /michi/)

brian-kn (/member/brian-kn/) says:

Jul 4, 2013. 2:33 PM

Reply (CHLMDPOHIQ4NFSA)

Hi Having ma de the antenna how or what do i n eed to connect it to my lap top to increase the extra antenna power, Kind Regards Brian UK

(/member /brian-kn/)


Apr 30 , 20 13 . 4:2 4 AM

Reply (CZFEKC1HFWSU0SO)

Hi, I thank you very much for the reply about the antenna wiring it is more clear now that you have explai ned, Kind Regards Brian UK



Apr 20 , 20 13. 10: 15 AM

Reply (CY2NP87HFPT8KJO)

Hi can the wires from the yagi antenna be connected with the wires in a a usb connecter and connect directly into my laptop. kind regards brian


popefelix (/member/popefelix/) in reply to brian-kn

Apr 29 , 20 13. 9:4 4 AM

If you mean just soldering a USB connector on to the (/member feedline for this antenna, no, /popef elix/) hat won't work. You still need something to ha ndle the actual generation and reception of the wireless signal.

Reply (CRF1Z8SHFPTELJP)

However, if you mean connecting the antenna to a USB wireless adaptor, that's possible, provided you connect he feedline from the antenna o the antenna connector on he wireless adap tor. If the adaptro doesn't have on e, you'd have to tear it apart and find where the internal antenna was connected.

popefelix (/member/popefelix/) says:

Apr 29 , 20 13 . 9:4 3 AM

Reply (C4WOF5THFPTELJN)

If you mean just soldering a USB connector on to the feedline for this antenna, no , that won't work. You still need something to handl e the actual gene ration and reception of the wireless (/member signal. /popefelix/)

However, if you mean connecting the antenna to a USB wireless adaptor, that's possible, provided you connect the feedli ne from the antenna to the antenna connector on the wireless adaptor. If the adaptro doesn't have one, you'd have to tear it apart and find where the

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internal antenn a was connected.

Easy to Build WIFI 2.4GHz Yagi Antenna by Biotele (/member/Biotele/) Download (/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/?download=pdf) sololife.sai (/member/sololife.sai/) says: Reply (CR4TY0NGT6ZCKI7) Sep 30, 2011. 10:53 AM (/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/?ALLSTEPS) 8 Steps (/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/step2/Buildin g-Overview/) Can i u se a wire i f so what i s the diameter. Thank you

(/member /sololife.sai/)

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Biotele (/member/Biotele/) (author) in reply to sololife.sai

Of course, i t has to be stiff and solid. I don't think it has 10 o be exactly a certain (/member diameter. Maybe someone /Biotele/) with antenna theo ry can enlighten us further.

Sep 30, 2011. 2:53 PM

Reply (C8NN CAOGSUT2PX0)

Dr.Bill (/member/Dr.Bill/) in reply to Biotele

Mar 3, 2013. 3:16 PM I think a larger diameter wire will result i n a larger bandwith 16 antenna. (/member For a router with 2 antennas, /Dr.Bill/) why not build 2 yagi's and stack hem? A stacked pha sed array j ust li ke he EM E array's for moon bounce.

Reply (CIB1KCKHDRS67Q8)

iamdarkyoshi (/member/iamdarkyoshi/) says:

Nov 14, 2012. 3:27 PM I have a maj or problem s that needs solving quick: how exactly do i (/member connect the driven element to the /iamdarkyoshi/) antenna? a s you can see, the antenn a boom is missing the element, because i popped in my original antenna with he usb card, and worked fine, but not he stronge st sign al. why di dnt i t work with the copper wire? because i just ook the 2 wires coming off my board, and put them on each end o f the elemen t, completely skippin g the original antenna? ho w is the wiring diagram? any help would be g reatly appreciated, as im bored of trying to get around the schools internet filter, with this i can mo och off of someone elses:D

Reply (CLLLPMCH9G16E3O)

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estefan2020 (/member/estefan2020/) says:

here is a matching using a pie ce of coax to get the 300ohm d own to 50ohm

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Sep 19, 2012. 1:15 PM

Reply (CXS7A5FH742ZLXO)

Easy http://www.k7mem.com to Build WIFI 2.4GHz Yagi Antenna by Biotele (/member/Biotele/) /Electronic_Notebook (/member /antennas Download (/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/?download=pdf) /estef an2020/) /yagi_vhf_feed.html

(/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/?ALLSTEPS)

8 Steps



@kiranrpatil01 if your phone has an external wifi jack, or you plan on (/member opening ypur phone and soldering /estef an2020/) some l mr-400 cable to your phone and have a 2ft antenna attached, go for it.

Reply (CJ8CBNSH742ZLV2)

Sep 19, 2012. 12:56 PM


Sep 19, 2012. 12:51 PM

Reply (C6V3EZUH742ZLUR)

chrislarkin (/member/chrislarkin/) says: Oct 3, 2011. 12:23 AM

Reply (CF20UOLGT9UA74T)

here is an onli ne yagi calc for 2.437 ghz, gives more options

(/member /estef an2020/)

http://www.k7mem.com /Electronic_Notebook/antennas /yagi_vhf.html

it did not work because you were completing the circuit at the end of the coaxial cabl e stopping the signal from traveling through your antena

(/member /chrislarkin/)

estefan2020 (/member/estefan2020/) in reply to ch rislarkin

if this was dc theory, yes, but Sep 17, 2012. 10:21 PM his is ac theory. the d river (/member elemen t acts much li ke a /estef an2020/) loop. j ust like the old circle uhf antenna, this way is called a folded loop, when he folds are the same distance. dc l ooks li ke a short, ac d oes not.

Reply (CUG7H6OH7432MFE)

estefan2020 (/member/estefan2020/) in reply to estefan2020

http://www.youtube.com /watch?v=BGdwIXMexCY& (/member feature=rellist&playnext=1& /estef an2020/) list=PLD7A103946CE9C072

Sep 19, 2012. 11:01 AM

Reply (C9IO9URH742ZL3A)

here is another yagi fol ded antenna with aproprate matching cable for 50 ohms. if you need a wifi with detachable antenna, alfa on fleebay is a good choice


Sep 18, 2012. 1:26 AM I would suggest ether placing gl ue on your sticks and let it d ry, or using p lastic (/member wrap a round th e sticks. this will prevent /estef an2020/) moisture from the wood interfiering with he antenna.

Reply (CFH5IS8H742Z8AI)

kiranrpatil01 (/member/kiranrpatil01/) says:

is there any dang er by using i t ,like licence for WiFi and can it be connected to android

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mobil e to access internet?

Sep 18, 2012. 12:48 AM

Reply (C355HPSH742SH0O)

Easy to Build WIFI 2.4GHz Yagi Antenna by Biotele (/member/Biotele/) (/member Download (/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/?download=pdf) /kiranrpatil01/)

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8 Steps

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for cable ebay 'rp-sma lmr 400' 3ft 1mcable $1 3 this is the only thing (/member you don't want to skimp on, as it is /estef an2020/) for these frequency's cable sign al loss can eat up the gain .

Sep 17, 2012. 10:39 PM

Reply (CG21DNSH7432MHR)

you can get 'RP-SMA male flange' and connect your antenna to your usb antenna adapters jack, and avoid the cable loss. just mount the driver element so it hooks up at the bottom instead of the top.

.

frankortega (/member/frankortega/) says:

I found a company and there antenna are not too expensive, I try to build (/member wo type of antenna i n (easybuild2.4 /f rankortega/) GHz), but still lacking some imformation, and its end up l ossing my time, need more information,kind ofcable,connector,and ho w long he maximum leght of the cable. hanks Home :: Antenn as :: 2.4GHz (Wi-Fi Ante nn a) Prin tab le 2.4GHz (Wi-Fi Antenna) AIR80 2 m an ufa ctures a vari ety o f antennas for WiFi, RFID and ther wireless applications using the 2.4 GHz unlicensed ISM band. Indoo r - Wirele ss Router Ante nna Mobil e - Vehicle Omni - Mast Mount Omni - Marine/RV Mount Omni - Mesh Style Omni - Uptilt Model s Yagi - WiFi Antenna Grid Sector

HomeFAQWhere to BuyPartnersAbou t CompanyContactSitemap Copyright © 2006 -2012 Air802 LLC 424 Fort Hill Drive, #105 Naperville, IL 60540 USA Tel: 630.428.3108 Fax: 630.637.8662 [email protected] 2102 Av Fermin Vivaceta Independencia

Mar 7, 2012. 1:34 PM

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Santiago, Chile Tel: 562.455.0975 by Biotele (/member/Biotele/) Fax: 562.455.0976 [email protected] Download (/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/?download=pdf) http://www.air802.com - AIR802 manufactures professional, reliable and high quality wireless and cable products. Our products are offered di rect or through di stributors or resell ers. Our (/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/?ALLSTEPS) 8 Steps (/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/step2/Buildin g-Overview/) wireless products includ e hi gh p ower and l ong ran ge access poi nts or routers, usb ad apters, antennas and coaxial connectors. The cable products include 50 ohm 195 and 400 series + Collection Favorite coaxial cable in a ddition to hi gh quali ty outdoor CAT5E Ethernet cable. http://www.air802.com covers USA, Canada, Mexico, Chile, Columbia, Peru, Argentina, Brazil, UK, Australia. Product CategoriesAntennas Cable - Ethernet / Coax / USB Connector/Adapters Lightnin g Protector Marine -RV Hardware Miscellaneous Power Over Ethernet Injector / Splitter Products Radios Switch Tools Knowledge CenterConversion Table (dBm to Watt) IEEE 802.11b/g/n Wireless Standards Comparison, Facts and Channels FCC Rules and Regul atio ns (2.4 & 5 GHz) View RF Coaxial Connector Identification Chart Radio Manufacturer to Coaxial Connector Type Cross-Reference Customer ServiceContact Information Hours of Operati on Return Authorization Form (RMA) Your cart Cart is empty --------------------------------------------------------------------------------


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j bake r22 (/member/ j bake r22/ ) in reply to frankortega

I have a Cisco wrt120n. It has Jun 1, 2012. 1:03 PM 2 antenna ho w do I make the yagi antenna?

Reply (CN5WNS8H2WESS00)

6 (/member /jbaker22/)

Biotele (/member/Biotele/) (author) in repl y to frankortega

I don't understand your question. You build this 10 antenna but you can't connect (/member it to the usn wifi receiver? Can /Biotele/) you post a picture of what you build so far? Thanks.

Mar 8, 2012. 3:45 AM

Reply (C2LQZJBGZHJZIKQ)

j bake r22 (/member/ j bake r22/ ) in reply to Biotele

This is router what other info. Do you need?


Jun 4, 2012. 4:48 PM

Reply (CGF790UH2WEM3DE)

j bake r22 (/member/j bake r22 /) in reply to Biotele Reply (CSK5ZQGH2WELODA) Jun 2, 2012. 9:06 AM has 2 antena like this Yagi Antenna by Biotele (/member/Biotele/) Easy to BuildItWIFI 2.4GHz

shows. The metal parts 6 on the side are the Download (/member (/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/?download=pdf) antenna. I would like to /jbaker22/) (/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/?ALLSTEPS) 8 Steps (/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/step2/Buildin g-Overview/) attach an alligator clip o 1 antenna which should I cli p it to? + Collection Favorite Then I will a ttach the other end to the Yagi antenna.

(/files/deriv /FJG/2X56/H2WER4T8 /FJG2X56H2WER4T8.LARGE.jpg)

nzammit (/member/nzammit/) says:

May 28, 2012. 4:39 PM

Reply (CTCN083H2MYKCH 3)

Hey great instructable! It mi ght be a bi t off topic but I have a few old di sused T V antennas. Could I somehow change those to receiving WIFI? Thanks.

(/member /nzammit/)

dbartley (/member/dbartley/) says:

May 14, 2012. 1:24 AM

Reply (CMJE7T1H1YOL1ZY)

Anyo ne with expe rien ce o f refl ecti ons from the coa x itsel f? I bui lt a 4-el em ent vertica ll y polarized 850-MHz Yagi antenn a. With the coax dangling ha phazardly from the boo m (/member behind, there seemed to be tremendous problems. These problems seem to di sappear by /dbartley/) loopi ng the coax behind from boom to the m ast, forming ROUGHLY another hal f reflector.

dbartley (/member/dbartley/) in reply to dbartley

The ARRL Antenna Book (Chapter 27, 1991) describes (/member his problem of antenna /dbartley/) currents on the transmission lines somewhat. The outside of the coax is actually part of he antenna, being directly attached to an active antenna element, though it is perpendicular in this region. But also its metal further back interacts inductively with other antenna eleme nts in its vicinity. Directing the coax back along the boom , with a large loop (about 1.5 wavelengths) behind and down to the wooden mast improves reception consistency somewhat, rather han hap hazard arrangement. But the idea l lo op seems to be obtain ed from the tightest possible. Because of the peculiar geometry and the lack of actual measurement rather than qual itative evaluation, it's hard to unde rstand why this is.

May 20, 2012. 4:27 AM

Reply (CRI885YH2BMNLYE)

Reply (C0KQ5GFGZFDPXS0) bakeBuild r22 (/member/ j bake2.4GHz r22 /) says: Mar 5, 2012. 1:46 PM by Easy j to WIFI Yagi Antenna Biotele (/member/Biotele/)

(removed by author or community request) Download (/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/?download=pdf)

6 (/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/?ALLSTEPS) (/member /jbaker22/)

8 Steps


Biotele (/member/Biotele/) (author) in reply to jbaker22

Mar 8, 2012. 3:46 AM

you can use a 2.4 GHZ coax cable with ad apter hooked to your router.

Reply (CIXDP74GZHJZIKT)

10 (/member /Biotele/)


(removed by author or community request)

Mar 8, 2012. 1:07 PM

Reply (C7WEFOZGZISQRHH)


Biotele (/member/Biotele/) (author) in reply to jbaker22

get a solid pi ece of copper wire hat fits into the router's 10 antenna socket, and connect to (/member one side of the dipol e. The /Biotele/) wire shoul d short.

Mar 9, 2012. 3:22 AM

Reply (CGAWI3FGZKGLF4I)


It has no socket. I h ave to solder and h ope I don 't ruin he route r.

Jun 1, 2012. 3:02 PM

Reply (C2EU73EH2WESS2R)


frisbeechamp1983 (/member/frisbeechamp1983/) says:

If I added l ike a reflector to the back o send all waves forward, the put it 1 on a slow rotation like radar, would it (/member still work? It would be attached to a /f risbeechamp1983/) modem in my b asement,the wired to he roof of my house.

Jan 20, 2012. 9:40 PM

Reply (CUXDDKPGXO0U61P)

andrew1 01 (/member/andrew101/) in reply to frisbeechamp1983

Feb 24, 2012. 6:00 AM actually if you l ook at yagi antenna theory, the wire just 4 behind the driven wire acts (/member like a reflector If you added a /andrew101/) dish behind the antenna, and the spacing was wrong, you would cause undue interference for yourself, and chances are it would work against you.

Reply (CZJEWMAGYVDIN1P)

a possibil ity would be to add something covering the back hat was grounded, i t would act as a shield to interference, and not a reflector thoug h.

Biotele (/member/Biotele/) (author) in reply to frisbeechamp1983

Yes that wil l work. Can you p ost a picture tha t sound s li ke a g reat ide a.

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Reply (CMOKCDNGXMS6080)

Jan 21, 2012. 8:24 AM

Easy to Build WIFI 2.4GHz Yagi Antenna by Biotele (/member/Biotele/) 10

Download (/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/?download=pdf) (/member /Biotele/) (/id/Easy-to-Build-WIFI-24GHz-Yagi-Antenna/?ALLSTEPS)

8 Steps


khan0daulatzai (/member/khan0daulatzai/) says:

guy can any paste a video of thi s est,,,plzz

Jan 31, 2012. 1:18 AM

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Reply (CXDHFRD GY18R6RO)

(/member /khan0daulatzai/)

Computothought (/member/ Computothought/) says:

Made your antenna, but have not ested it yet. have to rescue a cable first.

Jan 6, 2012. 3:07 PM

Reply (CQ3Y5QJGX3MBY88)

214 (/member /Computothought/)

Biotele (/member/Biotele/) (author) in reply to Computothought

you don't need a cable a iny short wire between the 10 active strip on the board and (/member one side of the loop will /Biotele/) work. Photo's please. thanks

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Jan 14, 2012. 4:14 PM

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