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BenQ M23a Modem
Does anyone know how to set up a connection to the net using a BenQ m23a modem connected to a PC in order to send and receive data from another modem conneted to a uC in some remote location? any help will be appriciated
Regards
gm862-quad project
Hello,
I am having trouble sending AT commands to the gm862-quad modem when using the usart port of the pic18f452 uC. whenever I use the rs232 port of the PC, i receive the correct responses from the modem but whenever i send the exact command using the uC, i receive the...
Hi
I am having a problem with displaying data from the pic18f452 via its internal ADC. I am new at this sort of programming and also at the hitachii 7780 lcd. When i run my code, i only getting OFF to display even if i set the analog input at >=5V and well when the pressure is displayed, i get...
I need to send the output from the internal adc of the pic18f452 to the usart and then send the data to a gm862 gprs modem. i dont know how to impliment the at commands in the code. also the output of the adc is 10-bits and the usart can only handle 8-data bits, what do i do? I was thinking to...
I need assembly code which samples the analog input to a pic18f452 every 5 seconds and send the data to the usart. then i need to send this data to a pc RS232 port via a max232 hip. any ideas?
pıc16f877 4 20 ma
Well i decided to use a 250Ω pot in order to vary the voltage from 1V to 5V which corresponds to 4mA - 20mA. Should I use the internal osc of the PIC or should I use an external one? I have read somwhere that the external osc is more accurate than the internal one found in...
pic16f877 adc
I have decided to use the PIC16F877 µC to convert a 4-20mA analog signal. I went through the manual and came accross the ADCON 1 register. I found out that it has two parts; a single bit ADFM and a 4-bit PCFG3:PCFG0. There was a table which I had was to use in order to determine...
how to use adc in 18f452
yo i'm trying to interface a ADC with a uC to form the data aquisition part of a RTU. i kno some uC have built in ADC in them but i was wondering which would be easier to program; an external adc or a internal adc. now i am a beginner at this sort of design so please...
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