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Old 10-20-2010, 08:17 AM #1
brettb2020's Avatar
Join Date: Oct 2010
Lightbulb Fix your Angel Sensi pad cheap and easy

So as most Angel owners know, the Sensi pad is quite easy to damage or it just stops responding like it should.

To replace the Sensi pad is quite pricey, 40 dollars plus shipping and tax. depends on where you live. Im from South Africa and shipping is not cheap and takes a long time.

So whether you choose to use my idea temporarily waiting for your origonal ordered Sensi or completely replace the original Sensi is up to you.

Even though this exercise is really simple, things can go wrong and I will not be held responsible for damages to your marker.

SO lets start

Items required:
1.)sharp stanley knife
2.)12mm piezoelectric plate like this. these are available from any electronic components dealer. should cost a couple cents
3.)an eraser. buy a decent eraser, I used a cheap one and it was to brittle and kept breaking

Step 1

Open the left grip, unplug all the connections to the opto board and remove the trigger frame. DONT loose the Sensi pin! remove the Sensi pad.

Step 2

Cut the eraser with the stanley knife as showen below. the final product of the eraser should resemble the shape of the Sensi pad so that it fits snug into its position.

I cut the eraser slightly thicker so that it will get compressed and held firmly in place when the trigger frame is tightened on. As shown here:

Step 3

Cut the wires off your broken Sensi pad. Solder the wires onto the piezoelectric plate as showen in the following pic. I just used some 0.25mm wire as my Sensi pad is not broken. dont put to much solder as this will stiffen the plate and make it less sensitive. there is no polarity.

Step 4

place the piezoelectric plate into the eraser as showen.

Step 5

place the your new sensi pad into the trigger frame. Route the wires clear from the screw and potential pinching areas.

Step 6

put the Sensi pin back in and screw the trigger frame back on. make sure the Sensi pin is free to move and is lined up with the piezoelectric plate. also make sure you are not pinching any wires.

Success! Run the Sensi test and watch the green and red light glow!
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Old 10-20-2010, 08:20 AM #2
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Join Date: Oct 2010
I did the Sensi test 50 times and I got 50 out of 50.

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Old 10-20-2010, 10:30 AM #3
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Join Date: Feb 2006
Location: Turlock,Ca
 has been a member for 10 years
Nice job man, they should put this in the sticky.
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Old 02-04-2012, 05:53 PM #4
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Join Date: Feb 2003
Location: NH
HobbesMRH is a Supporting Member
 has been a member for 10 years
Link no longer works. Can someone share some new links to compatible piezo sensors?
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Old 02-04-2012, 06:49 PM #5
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Join Date: May 2003
Location: Earth
 has been a member for 10 years
Here's a current link: 4e74

In the future when that link expires, you can run a Google or eBay search for "piezo disc 12mm" and you should be able to find what you need. These are commonly used as electronic drum triggers, so you may notice them marketed as such.
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Old 10-12-2013, 11:09 AM #6
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Join Date: Oct 2013
Location: Davison
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Thanks for the update on what to search for, looking to fix my Sensi!
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