A new generation of intelligent, scriptable sensors/controllers is around the corner. Up to date, the classical approach at the heart of many simple machines consisted of separated thermometer and control units. By contrast, my design is a unified thermometric controller that can be programmed with simple scripts. It integrates an accurate tempera
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ture sensor, a graphic LCD display, a handful of inputs and relay outputs capable to drive loads directly. Whether you need a charting thermometer, a vending machine that dials your number when empty, or a programmable leavening machine, you keep the hardware and change the script. Until recently, making a thermometer scriptable required an expensive processor with enough RAM and lots of external non-volatile memory and other external parts. This rapidly exhausted the I/O pin arsenal, and in turn required a bigger enclosure and increased significantly the cost, making the resulting product unattractive. I am going to demonstrate that the situation is now reversed thanks to a new generation of powerful flash microcontrollers. The COP8FLASH`s Virtual Eeprom replaces external non-volatile memory and frees up precious I/O ports. A 44-pins processor handles comfortably a small keypad, dip switches, a graphic LCD, serial communications plus an extra 4 inputs and 4 outputs. External reset chips or brown-out detectors are no longer required. Not to mention the built ‘in true 10 bit ADC that makes external amplifiers unnecessary. The front panel is about the size of a 3, 5 floppy disk and is occupied almost entirely by a large, backlit, graphic LCD display. The remaining area is used by three customisable tactile-feedback keys. All the connections are easily accessible on the opposite side of the box. There are two rows of screw...
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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