Research Article

FPGA Based Single Chip Solution with 1-Wire Protocol for the Design of Smart Sensor Nodes

Table 1

pH readings taken from HQ40d meter and Atlas pH meter at different dilutions.

Sample numberAmount of water (mL)Amount of acidity (H2SO4) (mL)Amount of alkalosis (NaOH) (mL)HQ40d meterAtlas pH meter

11005 of 0.1 M11.8011.89
21004 of 0.1 M11.6911.72
31003 of 0.1 M11.6011.63
41002 of 0.1 M11.4011.43
51001 of 0.1 M11.0011.04
61005 of 0.01 M10.5410.58
71004 of 0.01 M10.3810.43
81003 of 0.01 M10.2810.35
91002 of 0.01 M10.069.98
101001 of 0.01 M9.379.32
111006.856.92
121001 of 0.01 M5.745.79
131002 of 0.01 M4.023.93
141003 of 0.01 M3.653.56
151004 of 0.01 M3.483.41
161005 of 0.01 M3.343.28
171001 of 0.1 M2.852.80
181002 of 0.1 M2.532.47
191003 of 0.1 M2.412.37
201004 of 0.1 M2.292.23
211005 of 0.1 M2.202.14