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Hello,
My goal is to measure the AC current ranging from 0 - 20 A (with 8-10% accuracy) with microcontroller. For that I have developed one small circuit. The schematic of the circuit is attached. 30/5 CT is used. I am getting the desired output from this circuit, which i need to solve.
Still...
Hello,
I am working on a project, which uses the inbuilt ADC of the microcontroller MSP430. When used the through hole components, it works well but when used SMD components, it does not work. Though Both PCB having same schematic and the components with same rating. So what could be the problem ?
Hello All,
I have a SIM900A GSM/GPRS module. I have successfully interfaced basic AT Commands. Now I want to frequently send some data from GSM/GPRS module to the server (has static IP address & a domain name). I have read AT Command manual of SIM900 but still the picture has not been cleared...
Hello svizoman,
As far as accuracy is concern, the class of accuracy must be mentioned in their specification manual.e
You can select the meters as per your need.
Hello v.s.n.kumar ,
The basic difference between thumb and ARM is
1. Code Size (ARM having higher)
2. Thumb instructions - 16 bit & ARM instructions - 32 bit
3. Performance (Higher in ARM)
Hello udayan92,
To fulfill your requirement, you will require the zero cross detector circuit at the hardware side & Timer/Counter functions at the software side.
You are saying that your crystal frequency is 10 MHz, which is sufficient for your application.
Hello Barry,
Thanks for the reply.
1. I did the calculations and and also got the output but the question is, to detect the peak voltage and from the peak we are getting the rms value by the math, is it a reliablemethod??
2. The electromechanical relay is also connected with the same system and...
Hello,
I am working on a project which measures the ac line voltage(normally 230v) and the ac current measurement. For that I am using the microchip microcontroller having 10 bit adc. For the voltage measurement I am using the voltage divider circuit and the program detects the peak of the...
Hello Ashu,
You are getting garbage data, that means you are getting the data from the GPS. but probably you need to convert the characters into ASCII format by adding 48(decimal) and then display the values on lcd.
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