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Questions tagged [qtouch]

0 votes
0 answers
104 views

Noise Issue on LM5164 Buck Converter Output During Battery Charging

I am using the LM5164QDDARQ1 buck converter to step down 52V from a lithium-ion battery to 5V at 1A for a battery charging application. My system also uses CAN communication to monitor the charging ...
Akash Kumar's user avatar
0 votes
0 answers
98 views

Simulate capacitive touch sensitivity and noise immunity

Due to covid, we are limited in the time we can tune our touch designs before EMC tests. The device we are using has a PC based analyzer that is connected to the device over a serial protocol. ...
Pierre_F's user avatar
0 votes
1 answer
163 views

Qtouch with non-Atmel microcontrollers

Simple question really. Can I use Atmels Qtouch library with non-Atmel MCUs (such as an STM32)? It seems like Atmel has a solid line of capacitive touch ICs, ...
scottc11's user avatar
  • 433
0 votes
0 answers
310 views

Why does my IR receiver PCB only work when I touch the sensor pins?

I have designed a PCB based on a schematic which I am pretty sure that is correct and I have tested the schematic several times on the breadboards and all of them worked properly. But, after I ...
a2640's user avatar
  • 73
0 votes
1 answer
197 views

QT1070 inconsistent readings on touch pins

I recently transitioned my projects capacitive touch IC from using the MPR121 to the QT1070. I am getting irregular/inconsistent readings on one of the touch pins. In this particular situation, it ...
scottc11's user avatar
  • 433
2 votes
1 answer
188 views

AT42QT2160 capacitive touch controller inverted Cs voltage - no touch detected

I'm trying to make my own development board for the AT42QT2160 Touch controller, since the original one was discontinued. I've designed the PCB with 8 buttons and a slider consisting of 8 sections. It'...
ifraaank's user avatar
0 votes
0 answers
103 views

QT600 Under Atmel Studio 7

Using the QT600 development kit under Studio 7 in order to develop a touch interface, I can not get the kit to show up when not in programmer mode. I've managed to write the example HEX onto the ...
user34920's user avatar
  • 1,912
1 vote
1 answer
1k views

Which MCU (Atmel) I can use with QTouch library?

Some MCU have QTouch support - # touch channels implemented as a hardware. Is it true that QTouch library was designed only to work with such MCUs? Can I use it with, for example, 'old' ATmega48? Is ...
VIPPER's user avatar
  • 366
1 vote
1 answer
1k views

ATTiny45, LED strip, MOSFET, touch interface, but Vcc drops and tiny resets

I've developed a very little board with the ATTiny45 and mosfet (STD35NF06LT4 - http://www.farnell.com/datasheets/1689946.pdf ) to drive a high power LED strip at 24V. I have a 5V dc/dc converter (...
beetlejuice's user avatar