complete project

[mschmahl]

Updated Schematic in PDF and for Designspark

[Tinkerer]

Hi Tinkerer, thanks for posting the link to Diptrace EDS.

As a matter of interest and sorry to all being off topic, I read a post of your's from early 2011 and i gathered that you may have been using Diptrace and now changed over to Designspark. Correct?? and if so why??

I have downloaded Diptrace and trying to learn it.

Cheers Sid

I downloaded Diptrace, but never got to really use it. When DESIGNSPARK appeared, I looked at it and found that it is the first full size, no restrictions EDS, with 3D, SPICE simulation and a parts inventory of 85,000 parts in 2D and 3D, totally free with no strings attached and no limitations. Regular free updates, tutorials, support and more.
You also get a BOM that is linked to a parts catalog of a worldwide distributor and Datasheets.

It is just too good to be passed by. Now that I am getting used to it I don't think I will ever change.

Tinkerer

[Tinkerer]

Thanks mschmahl for posting the updates.

Some diodes in the RX circuit have a prefix 2Nxxxx. what should they be?

Cheers Sid

Thanks for the feedback. As you see on this schematic, it is a work in progress. The audio with the 4046 worked, but I was trying to improve on it. This is why we have another audio, using a 555 floating on the page. For the 2 diodes in question I used yellow LED's with a forward voltage drop of about 2.4V.

It is extremely expensive for me to buy parts here, so I use what is available in the parts box. Not always the most appropriate.

All the best
Tinkerer

[Tinkerer]

@ tinkerer
Thank´s for the explanation. Do i have to change R4 and R39 on RX also?

@Sido
I have made some PDF´s to the changes.

Yes, R4 and R39 on the RX board should be the same.

[sido]

Thanks mschmahl for posting the updates.

Some diodes in the RX circuit have a prefix 2Nxxxx. what should they be?

Cheers Sid

[mschmahl]

@ tinkerer
Thank´s for the explanation. Do i have to change R4 and R39 on RX also?

@Sido
I have made some PDF´s to the changes.

[sido]

I have little time at present. My 240 GB storage hard disk crashed and I am packing up my lab for moving. So you will have to exercise patience.

http://www.designspark.com/page/desi...-pcb-home-page

Here you can download the totally free DESIGNSPARK software. Full size, no restrictions.

Tutorials:

http://data.designspark.info/uploads...s_20130211.zip

All the best

Tinkerer

Hi Tinkerer, thanks for posting the link to Diptrace EDS.

As a matter of interest and sorry to all being off topic, I read a post of your's from early 2011 and i gathered that you may have been using Diptrace and now changed over to Designspark. Correct?? and if so why??

I have downloaded Diptrace and trying to learn it.

Cheers Sid

[Tinkerer]

Hi Tinkerer, any chance of posting the updated circuit changes in PDF that have been discussed in the last few posts. I dont have the EDS you guys are referring too.

Once the Moodz UNIPI physical usable PCB and hopefully ideal circuit layout is produced, i want to experiment with your unique designs.
Having wanting to do so for a while.

Thankyou in advance.

Cheers Sid

I have little time at present. My 240 GB storage hard disk crashed and I am packing up my lab for moving. So you will have to exercise patience.

http://www.designspark.com/page/desi...-pcb-home-page

Here you can download the totally free DESIGNSPARK software. Full size, no restrictions.

Tutorials:

http://data.designspark.info/uploads...s_20130211.zip

All the best

Tinkerer

[sido]

Hi Tinkerer, any chance of posting the updated circuit changes in PDF that have been discussed in the last few posts. I dont have the EDS you guys are referring too.

Once the Moodz UNIPI physical usable PCB and hopefully ideal circuit layout is produced, i want to experiment with your unique designs.
Having wanting to do so for a while.

Thankyou in advance.

Cheers Sid

[Tinkerer]

Ah, like always I forget something.

You can change R8 and R16 on the TX&PSU board to 1.5K to increase the pulse voltage range.