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Dec 29, 2005, 08:20 PM
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thanks Dave. i figured out what i had to do. i had to do ALOT of tweaking to the brightness and contrast of the colors. when that was done, it came out quite okay. i found the template for this RX in this forum, posted by Dave DEWIT. the black and white colors were reversed, so i put them where they had to be in my program.

i didnt have a laser printer, so luckily i picked this one up from EBAY http://cgi.ebay.com/ws/eBayISAPI.dll...tem=6833641877 i luckily got it pretty cheap too. it is 1200X1200 DPI how accurate will the small PCB printings be with a 1200X1200 DPI printer?

with all that said, i still DIDN'T find any artwork for the IRXA301 on Koichi's site. i searched through each of his projects twice(which took me 30 minutes to do), but i still didnt find one.
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Dec 30, 2005, 08:00 AM
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Dave Wulff's Avatar
Quote:
Originally Posted by jonathan8388
with all that said, i still DIDN'T find any artwork for the IRXA301 on Koichi's site. i searched through each of his projects twice(which took me 30 minutes to do), but i still didnt find one.
Go back to page 21 of this thread, there is a post by Koichi (#303). Click on his name and a dialoge box will drop down. Click on the link to his homepage, Tokos Home Page comes up, click on the line that says "english translation" it will show you his site through Bablefish. If Bablefish gives you a translation error, just back up and try again, sometimes it takes a few trys to get it to load right. On the left hand column, scroll down to the Main Catagory and click on PIV/AVR. It is an index of all of his projects. The 301 rx is listed as #32, open it up and scroll down, there are 2 pix of the rx, underneath are highlighted links to the GIF pcb files. Right click on the link and do a save as and put it where you can find it. Pay attention to the 200 pixel/cm note, that what it needs to be printed at in PhotoShop to be the right size. I thought all you kids were computer wizards?

Dave
Dec 30, 2005, 05:17 PM
Registered User
Artwork for 301 is listed in index of this thread as "Koichi's pcb artwork for 200 ohm coils" page 15 post 225

Copy and paste to MSword, right click on image to resize as %

Dave
Aug 07, 2006, 03:19 AM
Registered User
nathanrcman's Avatar
Hi guys im thinking of making one of these rx's and a tx transmitter for it.

I ve read all through this and lernt quite a bit, do you guys have any pointers on building one, or before i build?

I have not yet though found a part list of everything i need for the rx and tx. can someone out there help me. Im aware this rx total weight ends up around 0.4g? So then this rx CAN be used on a square 9 am i correct? Because i have the plane built and am trying to find a cheap resoloution for an rx. How much approx will one of these and tx be to build? Thanks alot guys for the help

Nathan
Aug 07, 2006, 08:25 AM
Registered User
Hi Nathan,

Read the first post (index) of this thread again. You will find link to parts list
there. You will also find some programming tips there. Koichi's IR is ideal for the Sq9. Your best solution may be to buy a kit or built unit from Koichi.

Dave
Nov 11, 2008, 09:18 PM
Registered User
Hi friends... I wat to make my own battery charger for the 30mah. 50mah and 90mah LI-POs.
Can anybody help me with shematics for a DIY LI PO charger.
Thanks
Nov 13, 2008, 04:26 AM
Registered User
Easiest diy charger to build uses LTC4054L. Will charge cells from 10 - 140mA.

Program resistor = 150/charge current, answer in K ohm.

eg: 150 divided by 30mA = 5K

4.5 - 6V supply.

You might read data sheet.

Dave
Nov 13, 2008, 06:50 AM
Don't leave it Stock
mrfliboy's Avatar
Hey Dave,

I can not believe I have not run across that schematic before. Is this something you are currently using? I pratically live on this site LOL Thanks
Nov 13, 2008, 10:06 AM
Max
I've posted about the above simple charger and some more info on it here :
https://www.rcgroups.com/forums/show...8&postcount=19

Using it till this day.
Nov 13, 2008, 10:34 AM
Don't leave it Stock
mrfliboy's Avatar
Thanks msurguy, I thought I'd seen and built them all. Thanks for another project. LOL
Nov 13, 2008, 10:43 AM
Max
You're welcome !
P.S. there are many more new simple to build chargers from the linear technologies for even bigger currents, and i believe you can order samples from their website for free.
www.linear.com
Nov 14, 2008, 04:53 AM
Registered User
Quote:
Originally Posted by mrfliboy
Hey Dave,

I can not believe I have not run across that schematic before. Is this something you are currently using? I pratically live on this site LOL Thanks
I've been using these chargers since about January 2004
https://www.rcgroups.com/forums/show...&postcount=338

Dave
Feb 03, 2010, 07:22 AM
Registered User
starscream4002's Avatar
how do you roll so neat balsa tubes?


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