Analog pH Sensor Kit (BNC electrode)
by DFRobot-style / clone
SKU: PSA-CMP-PH
No reviews yetTypical India street price
₹800–₹1,800
Hydroponics / chemistry pH (needs calibration buffers).
Interface: Analog
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Concept
Glass electrode voltage vs a reference; amp board scales to ADC.
A little theory
Nernst equation ~59 mV/pH at 25 °C. Calibrate pH 4 and 7. In the classroom, treat Analog pH Sensor Kit (BNC electrode) as a advanced part using Analog. Typical India street price is about ₹800–₹1800. Always verify voltage and pin labels on your exact module — silk screens vary across clones. Start with a datasheet or trusted learn guide, power the part correctly, share GND with the MCU, and test with a simple blink/read sketch before building the full project. Measure voltages with a multimeter when something fails, and keep actuator current off the MCU regulator.
How it works in a project
Soak electrode, analogRead, apply two-point calibration stored in EEPROM.
Classroom & project use
- Hydroponics
- Aquarium (supervised)
- Chem lab
Buying in India
Precautions
- Glass bulb is fragile
- Not drinking-water certified
- KCl storage
Specifications
| Output | Analog |
| Connector | BNC |
| Category | Sensors |
| Difficulty | Advanced |
| Voltage | 5V module |
| Interface | Analog |
Pinout
VCC | GND | AO (and DO if comparator module)
