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Table of Contents
Andurite moodul v5.0
(Version 5.0)
Andurite moodulisse on kombineeritud valik andureid, madalpääsufilter ja väliste andurite ühendamise võimalus.
Andurite mooduli võimalused
- Elektreetmikrofon
- Valgustugevuse andur (fototakisti) VT935G (takistus 10 lux valgustugevuse puhul 18,5 kΩ) andmeleht
- Temperatuuriandur (termistor NTC) (takistus 25 °C puhul 10 kΩ) andmeleht
- 10 kΩ potentsiomeeter
- Ultraheli kaugusandur Devantech SRF05 (mõõtevahemik 1-400 cm) andmeleht
- Infrapuna kaugusandur Sharp GP2Y0A21YK0F (mõõtevahemik 10-80 cm) andmeleht
Electrical connections
On-board sensors are connected as follows:
| on-board notation | external notation | on-board sensor | microcontroller port |
|---|---|---|---|
| MIC | CON4 | Microphone | PF0 |
| LDR | CON3 | Light intensity sensor | PF1 |
| NTC | CON2 | Temperature sensor | PF2 |
| POT | CON1 | Potentiometer | PF3 |
Sensors
Every sensor on the board is connected through the multiplexer, enabling to select between on-board sensor or external sensor which can be connected to the same port through the connectors. By default all on-board sensors are connected to the analogous inputs of the microcontroller (ADC0-ADC3). Multiplexer is controlled with the port PG0.
Schematics of multiplexer
Schematics of sensors connections
Low-pass filter
Low-pass filter can be composed between external analogous inputs 0-3 (PF0-PF3). Resistor and capacitor will be connected to the socket for building up the low-pass filter. By default a low-pass filter is composed for the channel 0 (PF0). Resistor value is 10 kΩ and capacitor value is 100 nF.
Schematics of external sensor connections and low-pass filter
Digital I/O connector
In addition to the sensors and analog inputs, there is a connector for digital I/O on the board. The pins of the connector are directly connected to pins PE2-PE5 of the controller.
The CON_IO connector
