Show Posts
Pages: [1] 2 3 4
1  Community / Exhibition / Gallery / Re: Cheap UHF spectrum analyzer (and RC tx rx) using RFM22 module on: October 26, 2012, 03:39:33 am
Yeah for us who know how cheap it is to actually build such an unit 110$ is very high.. That Rmilec unit is crap people say..

Thanks for the progress report, sorry about the glider.
2  Products / Arduino Due / Re: Arduino Due Mini/Nano on: October 25, 2012, 03:56:33 am
Definately an arduino due nano would be very cool smiley-grin.
3  Community / Exhibition / Gallery / Re: Cheap UHF spectrum analyzer (and RC tx rx) using RFM22 module on: October 25, 2012, 03:54:24 am
Unfortunately he hasn't yet posted the correct schematics and source code smiley-sad.
4  Community / Exhibition / Gallery / Re: Cheap UHF spectrum analyzer (and RC tx rx) using RFM22 module on: October 05, 2012, 01:56:02 am
Thanks for the answer, nope no idea...Melih says he will use these in the new version of Openlrs, but there is a long time with no activity...He says he will also probably sell the modules, so could be nice as a dealer for us who diy boards...

Modules output power probably varies with the voltage used right....Currently we use 3.3v right? I can't find info in the datasheet on how much power this module outputs at 3.3V, if its about 500mW that would be nice...I wouldn't even ramp it to 1W.
5  Community / Exhibition / Gallery / Re: Cheap UHF spectrum analyzer (and RC tx rx) using RFM22 module on: October 04, 2012, 04:04:38 pm
Guys can you help me out with a hardware question... Is the new rfm23bp http://www.hoperf.com/rf_fsk/fsk/rfm23bp.htm , directly compatible code-wise...Like if some arduino code works for rfm22b it will work also for rfm23bp if I make the correct hardware connections.
6  Using Arduino / Project Guidance / Re: Tutorial for hacking a CP2102 USB from ebay and uploading a sketch to an Atmega on: May 14, 2012, 05:55:20 am
Btw would you try and autoroute a single sided version too?
7  Using Arduino / Project Guidance / Re: Tutorial for hacking a CP2102 USB from ebay and uploading a sketch to an Atmega on: May 13, 2012, 04:52:11 pm
Yep that won't be a problem...I see its double sided right?  smiley, I'll have to learn the correct technique to line all the lines right  smiley..
The board in your previous post isn't the same like in your last post right?
8  Using Arduino / Project Guidance / Re: Tutorial for hacking a CP2102 USB from ebay and uploading a sketch to an Atmega on: May 12, 2012, 02:56:24 am
Sure - which parts do you want to keep, and how do want the connector?

So you won't be designing it  smiley-cry smiley
9  Using Arduino / Project Guidance / Re: Tutorial for hacking a CP2102 USB from ebay and uploading a sketch to an Atmega on: April 26, 2012, 03:10:14 am
Thank you very much, you are really kind! it would take ages for me to draw all the connections...I do quite well for a beginner in the schematic editor, but in the board editor I get into trouble smiley..

Well I'd like it to be single sided (I think I've already mentioned that smiley-grin) and with a dip package atmega and other parts also normal size (let say 3mm leds) not smd size ..

And I'd like the optional parts also (I'm not sure about that pwr led, it just indicates the arduino is being powered right?) and do I need the reset switch, if I have autoreset? I'd like the layout for the programming pins to be as similar as they can be with the modified programmer we are talking about http://www.ebay.com/itm/USB-2-0-UART-TTL-6PIN-Module-Serial-Converter-CP2102-/370532286388?pt=PCC_Drives_Storage_Internal&hash=item564571ffb4#ht_2817wt_1110 ...
I guess I want a female connector if cp2102 has male pins.
I don't need ICSP.

Thats about it I guess smiley

Also maybe I'd like a led on D13 so I can diagnose if the arduino is properly working with blink sketch (or which pin is it, I know I have a led that blinks on my nano if I upload the sketch on it, its permanently on the board).

Oh another thing, I'd like it to be drawn in Eagle smiley.

I have another question about the bootloader,..I shouldn't buy atmega with optiboot (or uno bootloader) right, but instead with duemilanove bootloader right?
10  Using Arduino / Project Guidance / Re: Tutorial for hacking a CP2102 USB from ebay and uploading a sketch to an Atmega on: April 25, 2012, 03:56:37 pm
@msev,
a board like you describe is easy to make.

Are you willing to design it for me since you have a lot of experience (in Eagle)? With Dip atmega328.
11  Using Arduino / Project Guidance / Re: Tutorial for hacking a CP2102 USB from ebay and uploading a sketch to an Atmega on: April 25, 2012, 02:31:48 am
Did you swap them because of the pinout on your arduino, or because the board was mislabeled (that rx was labelled as tx?)?
12  Using Arduino / Project Guidance / Re: Tutorial for hacking a CP2102 USB from ebay and uploading a sketch to an Atmega on: April 24, 2012, 04:05:43 pm
I'm looking for a design with the dip package that would ideally have such a pinout for programming pins that it would be directly plug-in friendly for the modified cp2102. Probably I'll have to modify some .brd file of an exsisting  minimal arduino project.. It would be nice if there was a topic, a collection of all minimal arduino projects together smiley-grin
13  Using Arduino / Project Guidance / Re: Tutorial for hacking a CP2102 USB from ebay and uploading a sketch to an Atmega on: April 24, 2012, 02:51:39 pm
Do you make them with dip atmegas?
14  Using Arduino / Project Guidance / Re: Tutorial for hacking a CP2102 USB from ebay and uploading a sketch to an Atmega on: April 24, 2012, 01:26:55 pm
Thank you very much!
15  Using Arduino / Project Guidance / Re: Tutorial for hacking a CP2102 USB from ebay and uploading a sketch to an Atmega on: April 24, 2012, 12:38:25 pm
The problem that I found is that the "Reset" pin on the board is not one you can use to reset your Aquino and start you download.  It is an input to the CP2102 to reset the converter chip.

The board I got off eBay had an exposed DTR.  You need a Capacitor between this 'pin' and reset (pin 1) on the Atmel chip.

I attached a couple photos of a board like mine.  I got it to work without too much difficulty.


Why do you need the cap, doesn't the arduino pro mini for example already have a cap onboard?
Pages: [1] 2 3 4