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HD44870 AVR Driver, running into issues
So I purchased a 20x4 LCD a little while ago, and got it running manually with just a breadboard (no MCU, just using switches/etc...). However im running into issues when trying...
Wednesday, 2 January 2019 - 15:37
Possible to drive SPI MAX7219 manually? (via breadboard)
This might be a silly question, but when reading a datasheet: https://datasheets.maximintegrat... to be specific I try to do a "sample" via breadboard and NO MCU (just wires...
Saturday, 22 December 2018 - 07:19
First Attempt at Bitbang SPI, would like feedback
So ill preface this by saying this is most likely wrong, I don't have access to a Logic Analyzer or Oscilloscope (although an LA is on my "Buy next" list). This is in NO way...
Friday, 30 November 2018 - 05:17
Bitbanging SPI/UART/etc.. for learning purposes
So i've been learning on AVR for a bit, and i've read about *How* UART/SPI work under the hood. However, I feel like I need to implement a simple software version of them to fully...
Monday, 26 November 2018 - 15:55
Confusion on CTC Mode (Atmega328p
So im learning about timers and the "Normal Mode" timer was pretty straightforward, so I thought i'd take a shot at CTC mode looking purely at the datasheet (seemed easy enough)....
Saturday, 10 November 2018 - 01:17
Atmega328p UART and EM-18 (RFID Reader)
So im still pretty new at this, but im trying to make sure im learning to understand datasheets..and basically being able to implement them in the simplest way possible. UART was...
Thursday, 8 November 2018 - 05:47
Confusion on Atmega328p "Pull-Up" Resistor Datasheet
So on the Atmega328 datasheet there is a comment on the "Internal Pull-Up Resistor" being set to "on". It specifically says this:   Pxn will source current if ext. pulled low...
Tuesday, 6 November 2018 - 16:26
Atmega328p, Unable to set default fuses (AVRDUDE)
So i've been working through the "Make: AVR Programming" book, and there is a section (Section 5 with the UART sample program) that I was getting really goofy Serial data back...
Sunday, 28 October 2018 - 04:25
"Preferred" DC Power Schematic/Voltage?
So I know The Atmega328 can handle voltages around 1.8-5.5v I believe (with the Clock speed changing at each one). So I had a couple of questions:   1. Is this clock speed...
Saturday, 31 December 2016 - 01:46
Solved: Atmega328p Short between Ground and VCC?
So im really confused right now, I've attempted to breadboard and program my AVR chip using the Sparkfun Pocket AVR programmer. I've gotten the drivers installed and so forth...
Saturday, 24 December 2016 - 16:58
Using Arduino ISP to Erase Arduino Bootloader and Program Just AVR?
Confusing title I know, but let me explain.   I have 2 arduino's, I want to take the Atmega328p chip out of one and breadboard it and program it with the Arduino ISP (Tons of...
Friday, 23 December 2016 - 06:52
Am I missing anything in my shopping list?
So im taking the plunge into AVR world (Don't worry I read the getting started guide :) ) but I want just a sanity check on anything I MIGHT be missing.   For one im grabbing...
Monday, 19 December 2016 - 20:41

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