Touch Switch IC

[mamu]

I ordered a touch switch ic from hobbytronics and got it working with a simple momentary setup with a LED. It has dual independent touch switches that can be configured either momentary or latching.

Now just need to figure out how to wire it with the OKR and dna modules. I'm not an electronics tech - so wish me luck.

Touch Switch IC

The sensor can be just about any metal object, I used this: 12mm Stainless Steel Barbell Ear Stud

 

[mamu]

After hours of this and that with trying different wiring setups with the OKR-T6 converter, I got it working with the touch switch from hobbytronics! woohoo!!

Now on to the DNA12 and DNA20 - I think those modules may be more challenging than the OKR.

 

[Indie73]

good swork mamu!

 

[jmarkus]

awesome mamu!!

 

[JazzyTech]

Was thinking about this last week! Nice to see someone putting their thoughts into action

 

[Commie]

Mamu, it feels very weird to give you advice, but the few touch switches I've tried work progressively worse as the contacts collect grease from the user's fingers. Usually solved by cleaning them, or touching them in an unholy rubbing motion I'm sure you knew that, but just in case.

I ended up trashing a perfectlu good 4050 altoids booster mod because the switch was driving me insane. I really wish I put it together in a way where I could replace it with a tactile switch

 

[Rader2146]

For the OKR you can connect the output direct to Pin 1. >1.5v will turn it on.

 

[mamu]

I've got the DNA12 wired and working with the touch ic - sorta. Right now it's firing the atty without touching the sensor and not firing when I touch the sensor. Gawd!! I've tried various other wiring configurations and no go so far with getting it to fire only when I touch the sensor.

Mamu, it feels very weird to give you advice, but the few touch switches I've tried work progressively worse as the contacts collect grease from the user's fingers. Usually solved by cleaning them, or touching them in an unholy rubbing motion I'm sure you knew that, but just in case.

I ended up trashing a perfectlu good 4050 altoids booster mod because the switch was driving me insane. I really wish I put it together in a way where I could replace it with a tactile switch

LOL - don't feel weird about giving me advice. I will forever be a n00b in training.

I know about the finger/juice accumulation on sensors. I don't mind a daily rub of the sensor with alcohol though. In case the touch sensor doesn't work out or I become too frustrated with it I'll replace it with a push button switch. I'm not good with frustration either - at all.

 

[mamu]

For the OKR you can connect the output direct to Pin 1. >1.5v will turn it on.

Yes, that's the way I wired it - pin 1 of the OKR to output1 on the ic and pin2 of the OKR to VDD of the ic.

The DNA12 is giving me fits with wiring though - always firing no matter what. Haven't given up yet though.

 

[Rader2146]

What configurations have your tried?

Assuming that you've already tried the basics, I think my first attempt would be IC Pin 2 --> DNA Pin 2, and leaving DNA Pin 1 open.

If that didnt work then I'd make:

DNA Pin 1 --> IC Pin 1
IC Pin 2 --> DNA Pin 2

 

[mamu]

What configurations have your tried?

Assuming that you've already tried the basics, I think my first attempt would be IC Pin 2 --> DNA Pin 2, and leaving DNA Pin 1 open.

If that didnt work then I'd make:

DNA Pin 1 --> IC Pin 1
IC Pin 2 --> DNA Pin 2

Thanks for the suggestions, Rader.

<IC Pin 2 --> DNA Pin 2, and leaving DNA Pin 1 open> this is the configuration that fires the atty without touching the sensor, and doesn't fire the atty when touching the sensor. Makes no difference if DNA pin 1 is connected to IC pin 8, or IC pin 4, or not connected.

<DNA Pin 1 --> IC Pin 1
IC Pin 2 --> DNA Pin 2> this configuration creates a short - smokin wires and hot hot batt.

I also tried DNA pin 2 --> IC pin 1 with DNA pin 1 --> IC pin 2 and I get da-nada - doesn't fire the atty touching and not touching the sensor.

With all these configurations, I have DNA pin 5 --> IC pin 8 with DNA pin 6 --> IC pin 1. I might finagle with that.

But so far no go. Bummer.

 

[bapgood]

Mamu,
Where do you have CFG 1&2 going? I'm assuming ground.

*edit....i read above post closer

 

[bapgood]

Mamu,
Since the DNA's don't actually use power through the switch, I think you are basically completing a circuit on the DNA, possibly to ground.

Is there voltage at DNA pin 1 or pin 2?

If there is voltage at DNA pin 1, maybe DNA P1 to IC P1 and DNA P2 to IC P2 with IC P4,P5,P8 to ground

 

[mamu]

Mamu,
Since the DNA's don't actually use power through the switch, I think you are basically completing a circuit on the DNA, possibly to ground.

Is there voltage at DNA pin 1 or pin 2?

If there is voltage at DNA pin 1, maybe DNA P1 to IC P1 and DNA P2 to IC P2 with IC P4,P5,P8 to ground

This is what Rader also suggested.

<DNA Pin 1 --> IC Pin 1
IC Pin 2 --> DNA Pin 2> this configuration creates a short - smokin wires and hot hot batt.

IC pin 5 is not connected as there is no touch 2 sensor. Didn't make any difference if IC pin 4 was connected to DNA pin 1, not connected, or grounded to IC pin 8.

I've now tried every configuration I can think of, and also what has been suggested, and still no go. Bout ready to give up. Bummer.

 

[bapgood]

Mamu,
Sorry maybe I was confused/not clear....Are you still connecting DNA pin 6 to IC pin 1?

 

[mamu]

Mamu,
Sorry maybe I was confused/not clear....Are you still connecting DNA pin 6 to IC pin 1?

Yes, and I also tried it with various other configurations, like at IC pin 2, or independent of the IC. I also putzed with the atty + and -. Da-nada.

 

[bapgood]

Yes, and I also tried it with various other configurations, like at IC pin 2, or independent of the IC. I also putzed with the atty + and -. Da-nada.

That is a bummer ......I wanted this to work very much, so I could use it too

 

[Dougiestyle]

Mamu, bridge the switch contacts on the DNA12 and use the touch IC to bridge pos or neg v-in, so the touch switch controls power, not the DNA's switching circuit

 

[bapgood]

Mamu, bridge the switch contacts on the DNA12 and use the touch IC to bridge pos or neg v-in, so the touch switch controls power, not the DNA's switching circuit

I dont believe that will work very good for the DNA's. They need power for adjustment and the display on the 20D.

 

[Dougiestyle]

I dont believe that will work very good for the DNA's. They need power for adjustment and the display on the 20D.

This is true for the 20, but will work fine for the 12. Brandon advised me that this was acceptable to use the power as the switch on the DNA 12. I know, I know, old technology. Hehe.