Temperature Recorder
#temperature sensor
#data logging
#microcontroller
#LCD display
#SD card
#sensor interface
#analog input
#digital output
#calibration
#environmental monitoring
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Flashflex Microcontroller Control Of Character Lcd Module
The FM497 is an integrated electronic ignition controller designed for breakerless ignition systems that utilize Hall effect sensors. This device operates an external NPN Darlington transistor to manage the coil current, thereby delivering the necessary stored energy while maintaining low...
microcontroller How does this power supply circuit work? (MCU + LM317)
The filter consisting of resistors R1, R2, and capacitor C1 integrates the PWM waveform. The purpose of the operational amplifier appears to be that of a non-inverting amplifier, with the gain determined by resistors R6 and R7. However, the need...
Eight-digit-microprocessor-display
The display interface utilizes the ICM7218A/B in conjunction with an 8048 family microcontroller. An 8-bit data bus (DBO/DB7-IDO/ID7) facilitates the transfer of control and data information to the 7218 display interface during successive WRITE pulses. The mode input pins on...
Password(code) Based Digital Locking System Using Microcontroller 89C52/89S52
Upon entering the password, the application, in this case "LED," will illuminate. In this digital locking system project, the interfacing of a keypad and a 16x2 LCD with a microcontroller will be explored, along with the accompanying code. This project...
Simple Temperature Controller
This temperature controller utilizes an LM135/235/335 temperature sensor and is designed to maintain a small environment at a warm or hot temperature. A schematic diagram is provided.
The temperature controller circuit is centered around the LM135/235/335 series of temperature sensors, which...
Microcontroller interface electrometer
A method for measuring static electricity for a science project was sought. An old copy of "Getting Started in Electronics" by Forrest M. Mims III was referenced for guidance.
To create a static electricity measurement circuit, a simple design can be...
Intelligent thermostat temperature sensor LM75 circuit diagram consisting
The circuit features simple smart temperature sensors utilizing an I2C bus interface, designed as a thermostat controller circuit. It employs the LM75 temperature sensor connected to a 2N3904 transistor, which drives a relay coil. The relay operates based on the...
Hot Tub Hack
This modification replaces the thermistor (temperature sensor) of a hot tub with an adjustable resistor that deceives the hot tub controller into believing the water is at a specific temperature. Additionally, the circuit is activated and deactivated by a 24VAC...
delay circuit for photography
This article outlines the construction of a simple microcontroller-based delay circuit designed for photographic applications such as drop or high-speed photography. It can control the trigger lag of cameras and flash units, generate periodic trigger pulses, or manage magnetic valves....