Andres2007
Hello,
I've got a litle dudes about a proyect for amplification the signal of a load cell.
I'm, working in a project where 30 microcontrollers read the weight of a load cell and send it via GSM/GPRS.
So my dude is what amplifier to use (INA125, INA122 or INA126)??.
By now, I have tried INA125 with this settings:
Single Power supply. Vcc = 5v
When this amplifier gets the maximum weigth of the load cell (it gets 4,22 v on the output). This voltage is used for a microcontroller PIC18F2550 to make a A/D convertion, but the problem is when I get these 4,22 (max) the PIC doesn't understand that this is the maximum level (for the PIC, the maximum level would be 5 v of Vcc).
Is there any way to fix 4,22 v from the INA125 at the input of the Analog Reference to the PIC ?
Would be desirable to use another INA like INA122 / INA126. What INA would be the best for this design (Load Cell to amplifier to A/D module all with 5 v and single power supply)??
Thanks in advance
Andres
I've got a litle dudes about a proyect for amplification the signal of a load cell.
I'm, working in a project where 30 microcontrollers read the weight of a load cell and send it via GSM/GPRS.
So my dude is what amplifier to use (INA125, INA122 or INA126)??.
By now, I have tried INA125 with this settings:
Single Power supply. Vcc = 5v
When this amplifier gets the maximum weigth of the load cell (it gets 4,22 v on the output). This voltage is used for a microcontroller PIC18F2550 to make a A/D convertion, but the problem is when I get these 4,22 (max) the PIC doesn't understand that this is the maximum level (for the PIC, the maximum level would be 5 v of Vcc).
Is there any way to fix 4,22 v from the INA125 at the input of the Analog Reference to the PIC ?
Would be desirable to use another INA like INA122 / INA126. What INA would be the best for this design (Load Cell to amplifier to A/D module all with 5 v and single power supply)??
Thanks in advance
Andres