AvrPhone is a simple mobile phone with touchscreen. His brain is AVR ATmega128 microcontroller (128 kB flash, 4 kB SRAM) and user interface, the 2.4 “LCD display with touch foil and ILI9325B controller, equipped with a 16-bit bus. The communication with the old GSM module SIM100Sčísnkého SIMCom manufacturer. The entire system is powered by a […]
AvrPhone using ATmega128 microcontroller Read More »
Based on the Atmel ATtiny12L-4PI microcontroller -A real Time Clock/Calendar for less than US$1.50 in moderate quantity. This is the timekeeping test circuit. It includes a one-transistor circuit to switch in the 5V power supply when present and drop back to the 3v battery the rest of the time. That loop of blue wire-wrapping wire
The DS protocol was designed to provide firmware-based bidirectional host-to-slave inter processor communications for situations in which no hardware solution is available and the host and/or the slave in incapable of tending the interface in real time. The only specialized hardware required is two bidirectional I/O ports on each chip (alternatively two input ports and
DS interface test tool using ATtiny2313 microcontroller Read More »
This is an evaluation use of a small graphics LCD module. Last summer, SG12232C graphic LCD module has been sold sold for 1500 Yens from Akizuki Denshi and I bought it. However I could not find good application for the LCD module and it was going to go to junk box 🙂 so that I
Audio Spectrum Monitor using S1D15200 microcontroller Read More »
Capturing repetitive waveforms at 1 million samples per second using PWM and a comparator. Download AVR Studio Source wfcao 030326 .asm The impetus for developing this technique came from my own need to capture repetitive waveforms using the least expensive and lowest part-count means possible. I wanted to be able to view the waveforms on
Minimum Mass Waveform Capture using AVR microcontroller Read More »
In 2006, I took part in an electronic demo competition on a Dutch forum (see this topic). Because computer demos like they used to have on old machines like the Amiga or Commodore are harldy made anymore since hardware has come such a long way, someone had the idea to do the same, but on
AVR mod player using ATmega325 microcontroller Read More »
If you’re a resident of Seattle, I highly recommend you check out the Bubble events group. One of their regular events over the summer is something called “Nocturnal Push” where you can get decked out in your best glow gear and cruise the Alki Beach strip on your bike, longboard, or whatever. That’s why I
Longboard Wheel Display using AVR microcontroller Read More »
This is the central location for resource for all versions of AttoBasic for Atmel AVR controllers and Adurino computers Devices directly supported include ATMEGA328, ATMEGA168, ATMEGA88M, ATMEGA32U4, ATMEGA32, ATMEGA163, ATMEGA8515, ATTINY2313, AT90S8515, AND AT90S2313 Versions of AttoBasic run on several AVR controllers with 2K or more of Flash Overview AttoBasic is a on-chip resident interactive
AttoBasic HOME using Atmega168 microcontroller Read More »
Downloads Download the AVRStudio assembly source vlflo13041105A.asm (html format) Download the AVRStudio Hex file vlflo13041105A.hex (html format) Photo of completed receiver. Its pocket sized, but not intended to be used that way because the antenna is a highly directional ferrite loopstick. Its only a matter of luck that there was room for all the components
A Superhet/Direct Conversion AM receiver for 181.818 kHz using Attiny2313 Read More »
This is a low power signal source I put together one evening to provide 187 KHz RF signals for an anticipated receiver investigation. Under Federal Communications Commission rules inside the United States, one is allowed to operate a transmitter without a license under certain conditions. Here, I have copied the relevant section of the most
1750 Meter Lowfer Band amplitude modulated RF source using ATtiny2313 microcontroller Read More »
