Frend's...
Tlong mee..  
sya mau bwat alt sistem pndeteksi kbocoran gas elpiji pke atmega 8535 & snsor gas TGS 2610.
Tpi,sya msih bingung gmana bwt gmbr rgkaian sensorny.. thu kan da 4 kaki...
Help me ....Taw da smber ref. lainny..

Belum pernah nyobain. Tapi kalau lihat dari datasheetnya ditulis begini :

KutipBasic Measuring Circuit:

The sensor requires two voltage inputs: heater voltage (V_H) and circuit voltage (V_C). The heater voltage (V_H) is applied to the integrated heater in order to maintain the sensing element at a specific temperature which is optimal for sensing. Circuit voltage (V_C) is applied to allow measurement of voltage (V_RL) across a load resistor (R_L) which is connected in series with the sensor. A common power supply circuit can be used for both VC and VH to fulfill the sensor's electrical requirements. The value of the load resistor (R_L) should be chosen to optimize the alarm threshold value, keeping power dissipation (P_S) of the semiconductor below a limit of 15mW. Power dissipation (P_S) will be highest when the value of Rs is equal to R_L on exposure to gas.

Jadi berdasarkan manualnya, konfigurasi rangkaian pin sensor TGS 2610-nya sederhana saja :
- pin 1 dihubungkan ke ground
- pin 2 dihubungkan paralel ke pin input mikrokontroler (misalnya P2.0) dan ke R_L
- pin 3 + pin 4 dihubungkan ke Vc (12 Vdc)

Sedangkan untuk rangkaian indikator-nya bisa menyesuaikan. Apakah menggunakan LCD, Buzzer, ataukah hanya LED berwarna.

Oia.. ini link datasheet untuk TGS 2610 : [pranala luar disembunyikan, sila masuk atau daftar.]