Post Created date
Split from: Pin configuration
Arduino was designed to be the standardized hardware component of a general-purpose academic training tool (called "Processing") used to link stand-alone microcontrollers to a PC...
Tuesday, 27 July 2021 - 17:40
Lm35 and crystal
The LM35 sensor connects to the AVR's analog-to-digital convertor (ADC).  Selecting either the internal RC or external crystal as the AVR system clock has no effect on the...
Tuesday, 27 July 2021 - 16:58
DIY analogue clock project
Hello   There are two meanings of the word "clock".   One is a device that keeps accurate hours:minutes:seconds time and has a way for the observer to know...
Monday, 26 July 2021 - 15:09
ATTiny45 I2C Slave and Micro Master Code Help
Yes, you are correct about the SDA:SCL being on D2:D3.  I got the "Pro Mini" mixed up with the "Pro Micro", and I'm going to blame Arduino's idiotic naming style.   The...
Sunday, 25 July 2021 - 01:21
adding uncommon features in the HAL layers
Set the special features as a parameter of the function that the HAL layer calls.     A common HAL is the Wire.h library of the Arduino development system. ...
Saturday, 24 July 2021 - 22:51
CallBack vs interrupt approach
A callback function construction inside an interrupt service routine (ISR) allows the code to go different interrupt-handling routines according to the data that the main code was...
Saturday, 24 July 2021 - 22:36
ATTiny45 I2C Slave and Micro Master Code Help
In the photos,  it looks like the SDA and SCL lines on the Arduino Micro (yellow and white wires) are plugged into D2 and D3.  This is wrong because the AVR...
Saturday, 24 July 2021 - 22:20
ATTiny45 I2C Slave and Micro Master Code Help
The key to solving this is to activate and de-activate individual components of the system and see what happens. Start at the sensor end:    Using a voltmeter, can you...
Saturday, 24 July 2021 - 14:37
I2C Bus
You are likely reading the sensor too fast.  Your main() has its loop be a constantly repeating call to readpress().  Which, as far as I can tell, is calling the sensor...
Friday, 23 July 2021 - 15:32
How do you design state diagram for project
For an AVR project, a state diagram is the documentation of a "state machine".    A state machine is a while() loop found in main()  [or the loop() function of an...
Thursday, 22 July 2021 - 21:02
HELP, Electronics noobie trying to design his first atmega based pcb
Your schematic design is nearly identical to the Arduino Nano with a MAX7219 module added.   I would be a lot cheaper to just buy a Nano and a MAX7219 8x8 LED module for...
Sunday, 18 July 2021 - 15:41
How to get -5V for operational amplifier
  [I need -5V for 6 OPA to measure 6 analog channels.  ]  Does this mean op-amps: six op-amps to measure 6 analog channels? If you do six op-amps with Vcc at +5V...
Thursday, 15 July 2021 - 04:06

Pages