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Discussion Title Created date
How to simulate humans capacitance in touch button?
Good day,    I am using MTCH101 and touch button. If humans hands touching the wire, capacitance changes and the chip sends HIGH or LOW level signal.   Is it...
Monday, 24 September 2018 - 20:37
Charger to MCU? Changing from 5 - 2.5V to 5V - 0V?
Hi,   I got the problem, I want to connect my charger to microcontroller to see if battery is fully charger. I created some schematic. CHRG pin is high impedance of 0V (GND...
Sunday, 6 November 2016 - 22:48
ADC reading signal from audio out
Good day,   I am trying to read sinus signal with adc from audio out.   If I connect ground to ground and signal to adc I am not able to read negative values. Is there...
Tuesday, 31 May 2016 - 20:28
FATFS writing file problem
Good day, I have some problem: For example, I am reading and writing some data to file. But if I will not use function f_close(); my filesize will be 0. Is it possible to do...
Saturday, 21 March 2015 - 17:17
Connecting microSD card to 2 microcontrollers.
Good day,   Is is possible to make circuit, which will share microSD card with 2 master devices.   1. I mean I connect microSD card to device number 1. 2. I use that...
Sunday, 25 January 2015 - 18:00
Logic converter 1.8V->3.3V, 3.3V->1.8V
Good day,   I figured out that my module uses 1.8V USART, and my microcontroller uses 3.3V.   I need help to convert those RX and TX signals forward and backward....
Sunday, 11 January 2015 - 11:50
FATFS chan library wrong free space
Good day everyone,   I tried to use Chan's FatFS library for a while, it works fine,   But I found some problems here.   If I read free space in my MicroSD card, it...
Thursday, 16 October 2014 - 16:43
Enabling MCU from microphone
Good day everyone! I have some question. I need to activate micro controller from microphone, by putting 3V3 from wake up pin. I need to use low power as much as possible
Tuesday, 26 August 2014 - 17:43
Connecting microphone to microcontroller's ADC
Good day, Have anybody tried to connect microphone to ADC. My friend gived me this one for free: http://www.knowles.com/search/pr... Actually it should have amplifier inside...
Wednesday, 5 February 2014 - 12:44
Battery charger from USB
Good day, What I want is to make some battery charging (Single Li-Ion 3.7 Volts battery) and control it with MCU( does not matter which for now). Questions: 1. I found some cheap...
Thursday, 30 January 2014 - 19:52
About ov7670 camera sensor
Hello, I am trying to play with that sensor. It uses i2c or so called sccb bus. I was able to use i2c in many other sensors like accel, gyro and everything worked fine for me. But...
Thursday, 9 February 2012 - 13:51
Problem with turnigy motor controller
Hello, I am using atmega16 for some test of my motor. I bought the motor and turnigy plush 12a esc for making a quadrocopter. I just want to test the motor, but I do not know how...
Tuesday, 6 December 2011 - 08:12

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