Read me first
 
I suggest you read the following pages in the numbered order.
Some important information may be covered in an earlier page and not repeated later.
At the end of the pages, you will find various downloads -
- Hex files for VFOs
- Circuit diagrams
- A few pages from my "experimenter's journal," which may be updated occasionally.
- A few pages written as an afterthought – see what I have said about OLEDs!
 
Eric ZL2BMI
 
 
1.  Why have these pages been updated after 12 years?
 
2.  Circuits and Bob ZL2ASO
 
3.  Digital VFOs for Dummies (Article in Sprat Magazine – join GQRP club – great articles!)
 
4.  Building the ZL2PD Sugar Cube  (Google ZL2PD for his website)
 
5.  The EWV VFO (Eric's Wonder VFO) – produced by Neville  ZL2BNE
 
6.  J Cesar VFO – modified by ZL2FSK.
 
7.  BEWARE the Asian OLED display!
 
 
DOWNLOADS
 
a)  EWV hex                           Download
 
b)  EWV  Circuit Diagram         View
 
c)  J Cesar hex                       Download
 
d)  J Cesar Circuit Diagram      View 
 
e)  J Cesar Sketch                  View
 
For the Sugar Cube – download the required files from his site.
 
f)   ZL2BMI SSB                     View
 
THE ZL2BMI EXPERIMENTER'S JOURNAL  -  and more
 
g) My SugarCube Circuit for the Generic Si5351 board.       View
 
h) If you have problems downloading Extremeburner.       Download

1. Copy both of these files into a new folder on your computer. I suggest just call it Extreme.

2. Plug in the required AVR cable to a USB port.

3. Run the Setup file for Extreme Burner.

4.If it runs ok - you are lucky! Otherwise, you will need to find ZADIG on the internet and attempt to download those drivers. It's a bit of a learning curve and easier to show than to explain.

5. The chips file is a replacement for the chips file that the programme will create. The programme does not contain the proper files for the ATtiny85 - though it will work with the settings for ATtiny84 - but it will complain. But if you just say YES to the question about continuing, it works fine.

But if you want to stop it doing this, you will need to find the DATA file in the Programme files for the Extreme Burner programme (under Program Files) and substitute the new CHIPS file for the one that is in there. Then it will work correctly.


(These will be added as time permits.)