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Thanks Eugene very nice of you to say. I used Kinsten, positive presensitised boards they are very nice to work with, and don't age in the...

Excellent Work Kev !! Very clean circuit board too , from vendor or did you etch yourself ? Regards.............Eugene

Project BRN Pi-1. Can explain purpose of pot 100 k (between R4 and R6) and also divider R10 +R11? It seems that the divider R10+R11 is intended for...

Hi! Speedy-G I solved my problem with the LCD(running character on top of LCD) i make a quick short of pin1 & pin2 of LCD which is +5v and GND, my...

Howdy, I tried the Lobo Lite on the goldfields and was very impressed that such a simple design can work so well. I didn't find any gold...

Hi deemon, thanks for uploading the pictures. Over the next few weeks I'll rough up a circuit and see if I can get the TX section working as per...

Have you a battery or a mains power supply? If mains supply, remove and try battery. You may have lots of mains noise in your house - try it...

thanks sorry didn't see that

Your picture is not clear about what you did so far with your board. I tried to enlarge it and rotate in various ways, but I'm unable to read...

By the way , when we look to these pictures attentively , we can notice the same characteristic in the all pictures . I mean that the start and the...

Yes , I have these pictures ..... one example we can see in the post 35 on this page - the bottom picture is the target response of a coke 0,33 can...

Skippy is correct. All the regulators should be in a TO92 package. The errata list for the book is located here ->...

Do you think if I put the two capacitor 10uf + - +, MD will no longer buzz after turning? this is the number one problem, I do not know how to solve...

Of course , it may be a good solution . By the way , we don't need to use such a tape on the all layers , because the only winding needs to be...

thats my thinking also skippy thanks for the input

I'm not the designer.... but it looks like all 3 linear regulators are in small TO92 packages, so they are the L versions. That would make U6 =...

In the project Koschey is detailed described the principle of work for this detector. Therefore it is possible to write the program again from null.

you can take HEX for CLONE-PI and try to desasembler it. there are projects for atmel and pic, I mean the pic one. CLONE schematic is similar to...

Yes, you can use ceramic, but these must be really big. A simple and cost effective way is using non-polarised capacitors at 4u7 or 10uF pairs in...

I have a ceramic capacitors, 4.7 microfarads. I can use them in the scheme?

Thanks for the information PIC16F88-1/P

Comrade, you now have a 1.1uF capacitor! Connect two 10uF capacitors in series instead, and tie the middle by a high value resistor (megaohms) to...

Good morning, comrades, I made the wires shorter. 4.7 uF capacitor bi I have not found, made of two pieces of 2.2 uF + - +, in all metal mode device...

"we cannot use a simple insulated copper" maybe if you put a layer of xfromer tape after each widinding - like on high voltage transformers. ...

My coil is 250mm in diameter, 25 turns of AWG24 wire = 0.5mm and not use resistor. Use a small sink in the IRF9640.

Hi deemon, are you able to post cro shots of target responses at the output of your frontend amp stages.