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| # | Post Title | Result Info | Date | User | Forum |
| Answer to: What is EEPROM in Arduino and how to use it? | 3 Relevance | 1 year ago | Sebastian | Hardware/Schematic | |
| EEPROM (Electrically Erasable Programmable Read-Only Memory) allows you to store data even after the board is powered off. It's non-volatile. This makes it useful for storing things like settings, calibration values, or any data you WAnt to retain. Let's understand the different memory types in Arduino: SRAM: Works as temporary storage while the program is running. Data in SRAM is lost when the power is turned off. Flash Memory: The Arduino stores your program code here. Like EEPROM, flash memory is non-volatile, but you can't store or retrieve any data d ... | |||||
| Answer to: How Does an Ultrasonic Sensor Like HC-SR04 Measure Distance? | 3 Relevance | 2 years ago | Alfred Alonso | Theoretical questions | |
| ... ultrasonic WAves propagate through the air until they hit an object, and when the WAves encounter an object, they reflect back towards the sensor. Immediately after the sensor transmit the signal, the Echo pin goes high. This signifies the start of the sensor's listening period. The sensor now awaits the return of the reflected ultrasonic WAve. If an object is within range, the receiving signal will be detected, causing the Echo pin to transition from high to low. The duration the Echo pin remains high corresponds to the Total time taken for the ultrasoni ... | |||||
| RE: Is Arduino still relevant in 2024? | 3 Relevance | 2 years ago | Jeffmon | Arduino | |
| ... charger that I WAs recently involved in ran into over $23,000. The unit used a PIC Microcontroller and could charge 4 batteries of all construction types. 70% of this charge WAs in the 9 prototypes that were required. The PCB engineer and the software engineer put in many, many hours. Have you seen the dollars amount an engineer commands these days? My job WAs simple. I designed the power switching interface between the Microcontroller and the battery. An Arduino MEGA would have made this task much cheaper but we are aligned with Microchip and are ther ... | |||||
| Answer to: Need help with the working of this circuit | 3 Relevance | 2 years ago | mertozkan | Circuits and Projects | |
| @nathan This circuit diagram is for a simple LED flashlight controlled by a push button switch. Here's how it works: 1. Power Supply: The circuit is powered by two 3V batteries connected in series, providing a Total of 6V. 2. Switch: When you press the button ("Push ON"), it completes the circuit, allowing current to flow. 3. Capacitor and Diode: - The 100u capacitor is used to smooth out any voltage fluctuations, acting as a buffer to provide a steady voltage to the LED. - The 1N4148 diode prevents current from flowing back into the capacitor, ensuring that the capacitor discharges only towards the LED. 4. Resistor (100k): This resistor limits the base current going into the transistor. It ensures that the transistor is not damaged by excessive current and controls the transistor's switching action. 5. Transistor (BC547): This acts as a switch. When current flows through the 100k resistor to the transistor's base, it allows a larger current to flow from the collector to the emitter of the transistor, powering the LED. 6. LED: The "Super-bright White LED" lights up when the transistor conducts. LEDs are diodes that emit light when current flows through them in the correct direction, as indicated by the arrow in the symbol. 7. Resistor (15R): This 15-ohm resistor is connected in series with the LED to limit the current flowing through the LED, protecting it from burning out by excessive current. In summary, when the push button is pressed, it completes the circuit allowing current to flow. The current passes through the 100k resistor to the transistor's base, turning it on. This allows a larger current to flow through the transistor to the LED, lighting it up. The resistor in series with the LED ensures that only a safe amount of current flows through the LED. The diode and capacitor work together to manage the voltage and current supplied to the LED for steady operation. | |||||
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