Plant Bioelectric Potential Sensor
This repository contains the circuit diagram and other information on the developed plant bioelectric potential sensor. The plant biopotential analyzer consists of a power supply/ADC module and a signal processing module. Signal processing diagrams and design principles are summarized here (Japanese).
This repository is part of the "Open Plant Bioelectric Potential Measurement Project (Japanese)".
You can donate to the project or purchase a set of PCB substrates and parts here. Donations are highly appreciated to help sustain the project.
Power supply・ADC module
Signal processing module
- first model
- link
- Renumbering of parts
- link
- Signal Processing Module
- re-drawings Schematic
- Changed the value of some resistors
List of parts required for assembly of Plant Bioelectric Potential Sensor.
※ The part numbers differ depending on the version. If the LED on the board of the signal processing module is printed as LED2, please refer to here.
Signal Processing Module
| Part | device name | Value / Type | Note |
|---|---|---|---|
| R1 | semi-fixed resistance | 50k | |
| R2 | resistance | 10k | |
| R3 | resistance | 1k | |
| R4 | resistance | 10k | |
| R5 | resistance | 10k | |
| R6 | resistance | 100k | |
| R7 | resistance | 68k | |
| R8 | resistance | 10k | |
| R9 | resistance | 1k | |
| R10 | resistance | 10k | |
| R11 | resistance | 10k | |
| R12 | resistance | 1k | |
| R13 | resistance | 10k | |
| R14 | resistance | 100k | |
| R15 | resistance | 4.7k | |
| R16 | double potentiometer | 100k | ref. |
| R16 | knob | ||
| C1 | ceramic capacitors | 0.1u | |
| C2 | ceramic capacitors | 47p | |
| C3 | ceramic capacitors | 47p | |
| C4 | ceramic capacitors | 0.1u | |
| C5 | ceramic capacitors | 0.1u | |
| IC1 | operational amplifier | LM324 | ref. |
| IC1 | IC socket | 14P | |
| IC2 | instrumentation amplifier | LT1167 | ref. |
| IC2 | IC socket | 8P | |
| JP1 | pin header（male） | 5P | Taller ones recommended. ref. |
| LED | 3mm red LED | ||
| U1 | 3.5mm stereo mini jack | MJ-354W-SG | ref. |
Power Supply Module
| Part | device name | Value / Type | Note |
|---|---|---|---|
| R1 | resistance | 10k | |
| R2 | resistance | 10k | |
| C1 | electrolytic capacitor | 47u | |
| C2 | ceramic capacitors | 0.1u | |
| C3 | electrolytic capacitor | 47u | |
| C4 | electrolytic capacitor | 47u | |
| C5 | ceramic capacitors | 0.1u | |
| DC1 | DC-DC converter | MAU106 | ref. |
| JP1 | pin header（female） | 5P | |
| MODULE | Arduino | Nano | write sketch |
| MODULE | pin header（female） | 15P | |
| MODULE | pin header（female） | 15P | |
| MODULE | USB Cable for Arduino |
Measurement Cable
| Device Name | Value / Type | Need | Note |
|---|---|---|---|
| 3.5mm stereo mini plug | MP319 | 1 | |
| wire | ~ 50cm | 3 | Easy to recognize if there are three colors: red, blue, and black. |
| alligator clip | small | 3 | Easy to recognize if there are three colors: red, blue, and black. |
| nail | 1 | conductive one | |
| electrode pad | 2 | Diversion of ECG pads, etc. |
Acrylic Box
| Device Name | Value / Type | Need | Note |
|---|---|---|---|
| acrylic parts | 2mm thick | 1 set | for 6 sides |
| nylon screw | M2*5mm | 4 | 6mm is acceptable, for fixing bottom panel |
| nylon screw | M2*5mm | 4 | 5mm to 12mm is acceptable, for fixing the top panel |
| spacer | M2*6+6mm | 4 | between bottom panel and signal processing module |
| spacer | M2*15+6mm | 4 | between signal processing module and power supply module |
| spacer | M2*20mm | 4 | between power module and top panel |
This repository is a part of "Open Plant Bioelectric Potential Measurement Project."
In combination with the following repositories associated with the project, it is possible to measure plant bioelectric potential.
- Plant Bioelectric Potential Sensor : https://github.com/kiyu-git/Plant-Bioelectric-Potential-Sensor
- Measurement Application : https://github.com/kiyu-git/Arduino-Serial-Plot-Recorder
- Analyze Application : https://github.com/kiyu-git/Arduino-Sensor-Data-Viewer
- Automation of lighting : https://github.com/kiyu-git/Arduino-Python-Serial-Control-Example
For more information on measuring plant bioelectric potential, please click here.
Example of plant bioelectric potential measurement
- Forest Symphony: https://special.ycam.jp/interlab/projects/forestsymphony.html
- LT1167 DataSheet: https://www.analog.com/media/en/technical-documentation/data-sheets/1167fc.pdf
- and more...
You can donate to the project from here.
Donations are highly appreciated to help sustain the project.
If you have any question, please write issues or contact from twitter.
twitter: https://twitter.com/kyu_yukirinrin
website: https://untamable.work
If you wish to use our works for commercial purposes, please contact us via twitter DM or our website.