The 040904C version of the code has a larger UART receive buffer and supports two pushbuttons that send either and ASCII `R` ($52) or an ASCII carriage Something to keep in mind when using AVR controllers that support 16 bit addressing(specifically, the ATTINY2313/AT90S2313 only has an 8 bit stack pointer, while some others have 16 bit stack pointers) found by Rafael A. Alcocer has been taken into account in version ATTINY2313AT90S2313 version 030929A as well as being incorporated into the ATMEGA8515/AT90S8515 version. This code should be able to run on the ATTINY2313 without modifications, as well as the other AVR controllers with appropriate modifications for things such as clock speed and I/O port assignments.
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The Truly MTC-C162DPLY-2N-LCD is an inexpensive two line LCD display and seems to be ideal as a display for some of my projects that have serial data outputs. Before building this interface, I used to either have a computer on the workbench to serve as a terminal or run an RS-232 cable from the desk with the computer on it to the workbench. When I saw the backlit version of displays being offered for less than US$6.00, I thought "Why not?".
The Truly display uses the Samsung KS0070B controller, which is (reportedly) compatible with the Hitachi HD44780 controller. I found a set of initialization and control routines that were written and placed on the on the web by Richard Hosking which only required a minor adjustment to get the Truly display working. Mr. Hosking's code was used in the assembler code that was originally posted and is in the ATMega8515 version. Mr. Hosking's code served as a model for the .include file driver that is used in the current AT90S2313 version.
The main minor adjustment I mentioned in the paragraph above was the addition of a second "Function Set" command that was needed to get the Truly displays to work. Mr. Peter Coppens has reported that he had to remove the second "Function Set" operation in the initialization routine in the Truly LCD Include file. This is noted in the include file by labeling the two lines with the comment "(OMIT FOR HITACHI)". the affected code fragment is shown...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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