G30 Screen Clicker Hack

[SouthernAtHeart]

This is an interesting project in which I’m trying to reverse engineer this screen clicker. It does not use any mechanical clicker, but solely some kind of electronic capitative field changing inside each tiny click unit, which is placed on the phone or tablet screen. I don't really need to know ALL the details of how it works, but just enough so that I can just use the little individual clickers and have them controlled by an arduino type project.

Here is a photo of the original unit, and also an inside photo of the tiny individual clickers (taken from the web):

There is a hub the controls the 6 little units in which you can adjust the clicking speed. I slowed the click speed down to 1 every 4 seconds, so I could get some (somewhat) stable reading with my fluke meter using the Min/Max setting. Each clicker connect with a USB micro plug. The wires are the standard colors (BK, RD, GR, WH); I thought it would be easy to determine how to control these with an arduino, but I'm finding multiple voltages that I'll have to deal with. I opened up the hub, and also tapped into one of the USB Micro cables to do some testing. I discovered on the PCB inside, there are test points for the 4 pins on the USB jacks. All 6 of the USB jacks are connected together in parallel. (so all the clickers act identical)
Here is a couple photos of the PCB inside:

I tried researching some of the chip markings, but I'm not getting very far. On the front of the PCB next to the USB C charging jack there is a couple SOT-223 chips (or SOT-89-5), one says 5322A ... and the other says LP4054. I'm guessing the circuitry on the front of the unit is the LiPo charging circuit. The hub runs off a LiPo battery, and charges via the USB C jack, as seen on the photo of the front side. I'm assuming that circuitry is the charging stuff.

So, on the back I found test points connected to the 4 output pins on the 6 USB micro connectors.

All connectors are connected in Parallel
Pin 1, Red:
Pin 2, White:
Pin 3, Green:
Pin 5, Black:
No AC Voltages showed up on any combinations
When a clicker is pulsed on (just a split second) a BL LED on it indicates the click, so I could tell which voltage state to reference as the click event.

Testing voltage (DC) on different wire Combinations, WITH A CLICKER ATTATCHED:

The first color listed was connected to the Fluke meter’s Black/Com

Black & Red: pulsed: Off is 20.5V; click is 24.4VDC
Black & White: pulsed: Off is -27.8V; click on is -25.2v
WH & RD (WH is neg): Constant 49.72VDC
BK & GR: (BK to meter GND): pulsed; On = 3.1VDC, Off = 0.0VDC

Testing again WITH NO CLICKER ATTATCHED to the hub

Black & Red: are now 0.0v Off, and 24V on
Black & White: no change; Off is -27.8V; click on is -25.2v
White & Red (WH is neg): same - 49.9V
Black & Green: Same - pulsed on is 3.0V, off is 0V

Any insight on what is going on here would be greatly appreciated. I'm going to try to figure out some more of the circuity on the back of the PCB, again, any help is much appreciated.

U2 has no markings.
U4 (marking of AMB) is near what looks like a choke (marking 100)?
U5 (marking is 4A2D)

Things I'm guessing at this point
There isn't any real "serial com" going on here, rather just a signal pin set high to activate the 6 clickers, by the GR wire.
Is the WH & RD wires a +/- 24V supply? With BK a the common reference?

Thanks

[xfpd]

That design is in different forms. This other form tells me the device is a small one (that fits in the pincer). Whatever electrics cause a change in charge (electron source or drain) is the device doing the pushing. I would imagine it to be a coil of wire, like a transformer, causing an electrical field when activated. That is my guess. Don't bet your life savings on it.

[SouthernAtHeart]

After more testing, and opening up one of the tiny clickers, I found that I can control the clicker by leaving it connected to the hub except for the GR wire, which I connect to my arduino pin (3V) and then activate a click with that digital pin.
I was hoping to make my own pcb & do away with this hub altogether, but I’ll have to investigate further that +/-24 volt supply.

[3Hummer5]

Hi,
I am very interested in trying something like you did with the AutoClicker screen clicker. Could you elaborate on which wires you used to connect the arduino to the device.

Since you last wrote, have you found a different/better way to tap a phone screen with an arduino?

Appreciate you comments.

Daniel

[alifanarduino]

Hi, I managed to do the click with my arduino based on your report about the GR cable when it supplied with 3.3V or 5V it will simulate a click
However, to simulate a click, I have to constantly give the RED 24V and WHITE -24V voltage, which I can give it from the HUB and set the interval to 40(which in real life is the same as clicking continuously), and give the GREEN cable 3-5VDC with my own interval

Have you find the solution on how not to use the hub and just straight using the clicker and arduino?
Or if you have created any circuit, would you mind to upload it here and discuss the circuit with us?

Thank you. This topic helps me a lot.
Thank you