Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Registered members
Current visitors
Charts
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Gold Prospecting
Do It Yourself (DIY) Projects
Surf Pi 1.2, Surfkit
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support Prospecting Australia:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="TaoZ" data-source="post: 78478" data-attributes="member: 3077"><p>Hi Guys,</p><p></p><p>I recently reproduced (copy) the SURF PI 1.2 KIT on a prototype PCB, based on the Original Schematic.</p><p></p><p><img src="https://www.prospectingaustralia.com/forum/img/member-images/3077/1400484424_taodetect.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>But the only way to let it working well, is to put a 10K Resistor (as a Pull-Down) between pin8 of U4 (4093) and the GND,</p><p>and I am not satisfied about that, because I really want to respect the original Schematic, for maybe getting better results.</p><p></p><p>So I have 2 questions:</p><p></p><p>1) What Voltage value have you on "TP2" when a piece of Metal is detected by the Coil ?</p><p>I set 0V as described on the Silverdog Website, and when I detect something, I've got: -0,32V</p><p></p><p>2) What Voltage have you on the PIN8 of U4 (4093) ?</p><p></p><p>Many thanks for your help !</p><p></p><p>Cheers</p><p></p><p>TAOZ</p></blockquote><p></p>
[QUOTE="TaoZ, post: 78478, member: 3077"] Hi Guys, I recently reproduced (copy) the SURF PI 1.2 KIT on a prototype PCB, based on the Original Schematic. [img]https://www.prospectingaustralia.com/forum/img/member-images/3077/1400484424_taodetect.png[/img] But the only way to let it working well, is to put a 10K Resistor (as a Pull-Down) between pin8 of U4 (4093) and the GND, and I am not satisfied about that, because I really want to respect the original Schematic, for maybe getting better results. So I have 2 questions: 1) What Voltage value have you on "TP2" when a piece of Metal is detected by the Coil ? I set 0V as described on the Silverdog Website, and when I detect something, I've got: -0,32V 2) What Voltage have you on the PIN8 of U4 (4093) ? Many thanks for your help ! Cheers TAOZ [/QUOTE]
Verification
Post reply
Gold Prospecting
Do It Yourself (DIY) Projects
Surf Pi 1.2, Surfkit
Top