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 »
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 basically the frequency meter section of the frequency meter/pulse generator based on the AT90S2313 described elsewhere on this site, combined with the 100 MHz RF interface described in the page about the RS-232 to 100 MHz RF desktop channel adapter. Built and align this is the same manner as the 100 MHz RF desktop
Frequency Meter with 100 MHz RF desktop channel using ATtiny2313 microcontroller Read More »
This 330 MHz remote control sends timed sequences of control pulses to accomplish complicated tasks. You can probably tell that I used a lot of solder flux on this board. Lots of flux not only helps the solder wet to the copper, but it also greatly reduces solder bridges. You can probably tell that I
Multifunction 330 MHz Remote Control With an ATTINY2313 Simulating the PT2264 Encoder Read More »
The 10k potentiometer, just above the ISP connector near the lower middle of the board,is used to adjust the display contrast according to your vertical viewing angle. DOWNLOADS ATTINY2313/AT90S2313 AVRStudio assembler source, LDCbutons040904Ca.htm ATTINY2313/AT90S2313 AVRStudio assembler source, UPDATED FOR COMPATIBILITY WITH NEWER VERSIONS OF THE ASSEMBLER, LDCbutons040904C_updated_a.htm Truly LCD driver include file, 2x16lcdinc.htm tlcd309Ba.htm AT90S8515/ATMega8515
A serial interface for the Truly MTC-C162DPLY-2N using ATmega8515 Read More »
Downloads Download the AVRStudio assembly source for the program: T12astrobe081028A Download the AVRStudio assembly source for the include file: T12astrobe081028A.hex Find updates at www.projects.cappels.org Overview This was designed to flash a pair of LEDs to be mounted on the wing tips of a Parkzone Citabria R/C (remote control) airplane. The unmodified Parkzone Citabria only weights
Remote Controlled (R/C) Airplane LED Flasher using ATTINY12 microcontroller Read More »
This Instructible is entered in the Category: 13 – 18 of the National Robotics Week Robot Contest MY URL-http://avadhutelectronics.blogspot.com/ MY [email protected] Video :Cellphone Operated Robot Step 1 Component Required Component Required: IC1 – MT8870 DTMF decoder IC2 – ATmega16 AVR microcontroller IC3 – L293D motor driver IC4 – 74LS04 NOT gate D1 –
Cellphone Operated Robot using ATmega16 AVR microcontroller Read More »
Simplicity in circuitry was the design direction. Zero mass (firmware only with no physical components) would the ultimate achievement. This instrument doesn’t have any front panel controls because the user interacts via an RS-232 terminal program at 9600 baud. I needed a frequency meter for my experiments in Nondu, Thailand, where I really don’t have
RS-232 Freq. Meter/Pulse Generator Based on Atmel ATtiny2313 using microcontroller Read More »
This is design for a frequency meter based on AVR microcontrollers. Maximum input frequency is specified to be 30 MHz in the multi-chip configuration, and in single-chip configuration, there are both 5 MHz and 10 Mhz versions operating with 10 and 20 MHz crystals, respectively. All versions have 9 1/2 digit resolution. I have used
A Little More Serious Frequency Meter using ATtiny2313 microcontroller Read More »
