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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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software to help reconstruct circuit diagram?
I'm trying to debug a circuit board but have no circuit diagram.
I could take a picture of the top and bottom of the board (only one copper layer), line them up in photoshop (flip one of them) to re-construct the circuit diagram. Is there a software to help me do this: import a photos of a circuit board, draw the components, connect them with wires. At this point the circuit diagram would look very messy because it is optimized for circuit board layout, not for reading. So I need the software to take this circuit diagram and re-arrange it so that it looks good. It's the opposite of a PCB layout software. |
#2
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software to help reconstruct circuit diagram?
james wrote:
I'm trying to debug a circuit board but have no circuit diagram. I could take a picture of the top and bottom of the board (only one copper layer), line them up in photoshop (flip one of them) to re-construct the circuit diagram. Is there a software to help me do this: import a photos of a circuit board, draw the components, connect them with wires. At this point the circuit diagram would look very messy because it is optimized for circuit board layout, not for reading. So I need the software to take this circuit diagram and re-arrange it so that it looks good. It's the opposite of a PCB layout software. *Some* of this can be done with MasterCAM and its ilk. |
#3
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software to help reconstruct circuit diagram?
On Mon, 18 Oct 2010 09:38:45 -0700, "james" wrote:
I'm trying to debug a circuit board but have no circuit diagram. I could take a picture of the top and bottom of the board (only one copper layer), line them up in photoshop (flip one of them) to re-construct the circuit diagram. That's what I do, except that I use Irfanview for the purpose. http://www.irfanview.com Taking a photo of the bottom of the PCB is usually easy enough. However, the component side is usually cluttered with parts requiring considerable guesswork as to the location of traces and pads. When I tried to use this method to reverse engineer a messy power supply, I gave up and used a PCB layout program instead. For example: http://www.freepcb.com I used the easily obtained circuit side photograph as a template, and did my best to reconstruct the board layout and traces. Mo http://www.instructables.com/id/Hack-The-Spy-Ear-and-Learn-to-Reverse-Engineer-a-C/step1/How-to-Reverse-Engineer-a-Circuit/ http://www.riccibitti.com/photoshop/photoediting.htm Is there a software to help me do this: import a photos of a circuit board, draw the components, connect them with wires. At this point the circuit diagram would look very messy because it is optimized for circuit board layout, not for reading. So I need the software to take this circuit diagram and re-arrange it so that it looks good. It's the opposite of a PCB layout software. I found this with Google. No experience or opinion: http://www.deltasoft.com.cn/english/index.htm -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#4
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software to help reconstruct circuit diagram?
james wrote in message
... I'm trying to debug a circuit board but have no circuit diagram. I could take a picture of the top and bottom of the board (only one copper layer), line them up in photoshop (flip one of them) to re-construct the circuit diagram. Is there a software to help me do this: import a photos of a circuit board, draw the components, connect them with wires. At this point the circuit diagram would look very messy because it is optimized for circuit board layout, not for reading. So I need the software to take this circuit diagram and re-arrange it so that it looks good. It's the opposite of a PCB layout software. Constructing a node-map may also help |
#5
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software to help reconstruct circuit diagram?
N_Cook wrote in message
... james wrote in message ... I'm trying to debug a circuit board but have no circuit diagram. I could take a picture of the top and bottom of the board (only one copper layer), line them up in photoshop (flip one of them) to re-construct the circuit diagram. Is there a software to help me do this: import a photos of a circuit board, draw the components, connect them with wires. At this point the circuit diagram would look very messy because it is optimized for circuit board layout, not for reading. So I need the software to take this circuit diagram and re-arrange it so that it looks good. It's the opposite of a PCB layout software. Constructing a node-map may also help After scanning in use negative and excess contrast and edge detection etc to highlight tracks and then print off at larger scale to make more manageable, overlaying by hand main components. Find the main rails and mark as red, black and green say for +/-/0 rails . Leave out caps in the first pass in unravelling. Use node-map to predict likely placements of components in logical schematic. |
#6
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software to help reconstruct circuit diagram?
Is there a software to help me do this: import a photos of a circuit
board, draw the components, connect them with wires. At this point the circuit diagram would look very messy because it is optimized for circuit board layout, not for reading. So I need the software to take this circuit diagram and re-arrange it so that it looks good. this page lists electronic design apps some are freeware http://www.msbdesign.co.uk/software.html -- @~@ Might, Courage, Vision, SINCERITY. / v \ Simplicity is Beauty! May the Force and Farce be with you! /( _ )\ (x86_64 Ubuntu 9.10) Linux 2.6.35.7 ^ ^ 20:29:01 up 6:08 0 users load average: 0.06 0.02 0.00 不借貸! 不詐騙! 不援交! 不打交! 不打劫! 不自殺! 請考慮綜援 (CSSA): http://www.swd.gov.hk/tc/index/site_...sub_addressesa |
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