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COSM (Circuit Output Signal Modifier)
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Shows components (including oscillator) and connections.
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12 Comments
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Leeyen
03:53 AM on September 04, 2008
I've been trying very hard to understand on the above wiring diagram based on the original voltage adder that shown in U tube and I'm still confused on the connections and the labels.
There's no connection to the o2 sensor shown. The video showed 2 wires coming out of the box but the connection on the inside is quite busy. I've tried to pause the video to see exactly how they're connected but failed to figure out. I supposed one wire connected to the engine/vehicle ground and one to the o2 sensor. How is this wire connected to the sensor? This wire is spliced to the o2 sensor wire or connected to the cut o2 sensor wire that connect to the ECU.
I'm very keen on building my own voltage adder but not so sure of the wire connections. Hope you'll be kind enough to sketch a drawing of the voltage adder layout that uses the 1.5 penlight battery for my viewing. I'm kind of moron on the electronics diagram. Thank you in advance
There's no connection to the o2 sensor shown. The video showed 2 wires coming out of the box but the connection on the inside is quite busy. I've tried to pause the video to see exactly how they're connected but failed to figure out. I supposed one wire connected to the engine/vehicle ground and one to the o2 sensor. How is this wire connected to the sensor? This wire is spliced to the o2 sensor wire or connected to the cut o2 sensor wire that connect to the ECU.
I'm very keen on building my own voltage adder but not so sure of the wire connections. Hope you'll be kind enough to sketch a drawing of the voltage adder layout that uses the 1.5 penlight battery for my viewing. I'm kind of moron on the electronics diagram. Thank you in advance
Reply
DCTech
10:02 AM on September 03, 2008
This site has a wealth of information concerning sensor modification! I'm surprised, MadScientist! I've been tinkering with HHO for months now, mainly designing a cell that'll deliver enough gas to mod my Jeep with it, However, there is a serious shortage of information relating to vehicle computer interfacing and sensor modification. Finding you on YouTube and finding your site has been a Godsend. However, I'm a great follower of the K.I.S.S. Principal, and I share your recent revelation that your original COSM circuit has no need for an oscillator. Could you post a new schematic without the oscillator components? Thanks!
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goodol55
06:33 AM on July 21, 2008
Question1: Battery voltage 1,5 or 12 v. Question 2 Can you post a complete schematic showing the voltage regulator. connection to ECU AND O2 Sensor?
Question 3: Where does the O2 senson connect to?
Comment. It seems that all these schematics should be integrated to show the complete system. All the "little" pieces seem to be confusing. A simple schematic, complete, and drawn with paintbrush etc will allow us to breadboard the circuit just nicely. Too many gaps in the idea. If the point is to build this, then we need ALL the Info. Thanks, Mad
Question 3: Where does the O2 senson connect to?
Comment. It seems that all these schematics should be integrated to show the complete system. All the "little" pieces seem to be confusing. A simple schematic, complete, and drawn with paintbrush etc will allow us to breadboard the circuit just nicely. Too many gaps in the idea. If the point is to build this, then we need ALL the Info. Thanks, Mad
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paulsonaivy
01:11 PM on June 15, 2008
hi ,is the voltage 12 volts or 1.5 volts,does the ECM mean that u connect the wire to the wire wich goes from the O2 to the ECM
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budssubs
11:47 PM on May 21, 2008
Very nicely done. Much simpler design than others I've seen. Blaze on.
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Mad
04:16 PM on May 13, 2008
Hi guy. You're 100% correct. And that minum doesn't have to be much. This particular unit, formerly the "voltage adder" was the starting point for what the COSM has become and we've moved waaaay past it but I left it posted out there for anyone interested in building it. This one used the external battery pack but the most recent version now utilizes the vehicle power supply. I have to admit this original starting-point, the prototype that everything stemmed from, worked like a champ...and the case I had it installed in was a BRICK (a very large box) compared to now!
Reply
guy
11:01 PM on May 08, 2008
I believe that most pots and r-stats have minimum resistances that should prevent them from short circuiting the PS.
Reply
Hotaman
11:01 PM on April 29, 2008
Your drawings do not show the O2 sensor connection. Also the only connection to the ECM is directly from the output of the 555. The POT will short out the PS if turned to one stop and simply connect PS GND to Vehical GND. Perhaps this is where the confusion you wrote about comes from.
Cheers
Cheers
Reply
Rich
07:46 PM on April 24, 2008
Is this using a 1.5v batt? I guss I dont understand how to hook this to my O2 not using the oscillator. I am kinda a greenhorn with this stuff. do you cut the O2 wire? if so what hooks ot ECM and what hooks to the O2?
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victor
09:12 AM on April 24, 2008
do you have the plans on how to make the power cell?
best regards
victor
best regards
victor
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Mad
09:14 PM on April 07, 2008
Howdy Michael. Thanks for the kind words! Informing everyone is what I'm all about. 
Reply
Michael
10:00 PM on March 29, 2008
Hey MS good looking site you have here. I've seen your You Tube vid's and I like what I see. I'm going to book mark your site. I will be looking forward to more info.
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