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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Recent content by Swsean

  1. S

    Water Heater as a Load

    This is the circuit that I will use for the phase firing. Thus, with negligible inductance, does it mean that I can use the circuit form figure 6 instead of figure 7?
  2. S

    Water Heater as a Load

    Hi, I am doing a project to control the temperature of a water heater for a etching tank. However, I am not sure about the representation of the load in the circuit simulation. After doing some research, i have found that a heater is normally a resistive load instead of an inductive load, and...
  3. S

    Interfacing GSM Sim900a with PIC16f887

    Hi, I'm currently working on a project. I'm using a PIC16f887 microcontroller to help me send a sms to the user. It is supposed to allow the user to enter their phone number and it will send a sms to the user. The keypad is working fine but I have problems with the GSM. The code I've attached...
  4. S

    Matrix Keypad & 16*2 LCD interfacing with PIC

    Ian Rogers is this correct? void LCD_PRINTS(char LCD_Str) { uint8_t i = 0; RS = 1; while(LCD_Str[i] != '\0') { LCD_Write_Nibble(LCD_Str[i] >> 4); LCD_Write_Nibble(LCD_Str[i++] ); } } This produced an error error: subscripted value is not an array, pointer, or vector
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    Matrix Keypad & 16*2 LCD interfacing with PIC

    Hi, guys. I am working on my final year project. I've been trying to interface the Matrix Keypad & 16*2 LCD along the with PIC. However, I wasn't able to get it to work. The LCD is able to display the 'Enter Duration' text but does not display the content of the 'Duration' array. The...
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    Programming DS3231 RTC without Arduino

    Hi, thanks for replying. For my project, I am using PIC16F887 processor. How should I set it up to program the date and time?
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    Programming DS3231 RTC without Arduino

    Hi, Recently, I've began my Final Year Project. In my project, I need to use a RTC module. However, I wasn't allowed to use Arduino UNO as a part of the project. Looking for resources online, I wasn't able to find a way to program the DS3231 module without using Arduino UNO. I want to use...
  8. S

    Building a PCB etching Tank

    Hey. I am new here. For my FYP, I am building a PCB etching Tank. For the immersion heater, I wanted to have a feedback temperature. However, I couldn't find a suitable temperature sensor to be used, as the sensor required needs to be waterproof and also not metal as i might be submerged in...
  9. S

    How to build a Oscillator using a Sallen Key low pass filter

    Hi. I am a college student studying E&E engineering. I am currently taking Modern Control System Enginnering subject. Recently, I was given a assignment asking me to build a Oscillator using a Sallen key Low pass filter. For my circuit, I am using a Sallen key low pass filter with R=R1=R2=10K...
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