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Random intermittent problem - hardware or software?
Processor: ATtiny461 Frequency: 1mHz internal osc. This is the circuit discussed a week or so ago. A light sensor determines the PWM duty cycle to dim some LEDs. Everything seems...
Wednesday, 8 January 2014 - 18:48
ADC problem with ATtiny461
Hello everyone. I've had to put my tachometer project on the back burner to get something else done. :? I am not able to get into a lot of specifics, but I have a project that...
Thursday, 26 December 2013 - 23:18
My Digital Tachometer - putting it all together
To review, I am making a digital tachometer that looks like this: To drive the 7 segment LEDs, I am using a MAX7219, and for the bar graph around the perimeter, I'm using 5...
Thursday, 5 September 2013 - 16:59
Software PWM and shift registers
Since I registered with the 'Freaks' at the end of last year, I have been learning various aspects of programming the digital tachometer I am building. I am getting close to...
Sunday, 28 July 2013 - 01:05
Understanding ATtiny USI with 74HC595s
So far, I have some code to bit bang the serial communication with 74HC595s. JJ has inspired me to use the hardware USI on the chip to simplify and speed up my program. I have...
Wednesday, 12 June 2013 - 21:37
Looking at Tachometer code strategy
A year or so ago, I had designed a tachometer using discrete logic and counters. In doing so, my plan was to count pulses for a specific amount of time. In order to preclude the...
Sunday, 9 June 2013 - 05:00
Pin Change Interrupt questions...
I wrote an ATtiny tachometer program that polls the state of the sensor input and increments a counter at each state change (rising and falling). Timer1 times this for 75 msecs...
Friday, 17 May 2013 - 23:11
Thank You AVR Freaks!
I am posting this to thank ALL the AVR Freaks that have contributed to my AVR education! :wink: Special thanks go out to Bob Gardner, Kartman, clawson, Koshchi, and DocJC. I have...
Thursday, 11 April 2013 - 03:07
Timer0 experimenting with ATtiny261
While I'm waiting to receive a USB oscilloscope to debug my MAX6675 project, I'm experimenting with timer0 to use as a time reference for a tachometer. I lifted a few routines...
Saturday, 23 March 2013 - 02:33
Read MAX6675 with AVR (ATtiny261)
I am gaining confidence with programming AVRs. With the assistance of AVR Freaks bobgardner, Kartman and others, we've got my board lighting seven segment displays and reading a...
Saturday, 9 March 2013 - 01:31
Read DS18B20 with AVR (ATtiny261)
So I now have a working 7 Segment Display routine that bobgardner was generous enough to write and many of you helped me get working the way I want. THANK YOU to ALL! All your...
Friday, 1 March 2013 - 00:33
7 Segment LED Display with AVR
Today I got the Arduino UNO and LCD Shield! It came faster than I expected. :lol: So now I have some questions. Now that I have the Arduino with LCD, how do I drive a 7 Segment...
Wednesday, 20 February 2013 - 21:48

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