Generally, two electrode based amperometric biosensors show extremely low current signal output around pico ampere (pA) to micro ampere (µA) range. This paper describes the development of electronic reader to capture and amplify four different range of current as mili, micro, nano and pico ampere and convert it to detectable voltage range as an output signal to the microcontroller. The MAX4238 op-amp IC was used to amplify micro voltage to mili voltage. NodeMCU was act as the process and control circuit to read the output voltage from the amplifier circuit. The entire system is comprised of a voltage amplifier circuit, filter circuit, microcontroller and power supply unit. The range of the current measurement of the system was from 1 pA to 650 mA. The amplifier operation was measured with a high impedance current source and has been compared with the theoretical measurement. The Design Spark PCB software was used to design the voltage amplifier circuit. Arduino software was used to create a programming code to upload in NodeMCU microcontroller.
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2 November 2020
PROCEEDINGS OF ADVANCED MATERIAL, ENGINEERING & TECHNOLOGY
29–30 November 2019
Seoul, South Korea
Research Article|
November 02 2020
Development of voltage amplifier electronic reader using NodeMCU Available to Purchase
M. N. Afnan Uda;
M. N. Afnan Uda
a)
1
School of Microelectronic Engineering, Universiti Malaysia Perlis (UniMAP) Putra Campus
, 02600 Pauh, Perlis Malaysia
a)Corresponding author: [email protected]
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Asral Bahari Jambek;
Asral Bahari Jambek
1
School of Microelectronic Engineering, Universiti Malaysia Perlis (UniMAP) Putra Campus
, 02600 Pauh, Perlis Malaysia
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U. Hashim;
U. Hashim
1
School of Microelectronic Engineering, Universiti Malaysia Perlis (UniMAP) Putra Campus
, 02600 Pauh, Perlis Malaysia
2
Institute of Nano Electronic Engineering (INEE), Universiti Malaysia Perlis (UniMAP)
, 01000 Kangar Perlis Malaysia
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M. N. A. UDA
M. N. A. UDA
3
School of Bioprocess Engineering, Universiti Malaysia Perlis (UniMAP)
02600 Arau Perlis, Malaysia
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M. N. Afnan Uda
1,a)
Asral Bahari Jambek
1
U. Hashim
1,2
M. N. A. UDA
3
1
School of Microelectronic Engineering, Universiti Malaysia Perlis (UniMAP) Putra Campus
, 02600 Pauh, Perlis Malaysia
2
Institute of Nano Electronic Engineering (INEE), Universiti Malaysia Perlis (UniMAP)
, 01000 Kangar Perlis Malaysia
3
School of Bioprocess Engineering, Universiti Malaysia Perlis (UniMAP)
02600 Arau Perlis, Malaysia
a)Corresponding author: [email protected]
AIP Conf. Proc. 2291, 020070 (2020)
Citation
M. N. Afnan Uda, Asral Bahari Jambek, U. Hashim, M. N. A. UDA; Development of voltage amplifier electronic reader using NodeMCU. AIP Conf. Proc. 2 November 2020; 2291 (1): 020070. https://doi.org/10.1063/5.0022847
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