Customer:
I would like to order a gas sensor. I’m interested in whether the MQ135 detects CO. I want to connect it to an ATtiny85 and I’ll probably need a power supply. I’m assuming the sensor activates at certain intervals. Could you recommend a power supply from your range?
Original message (Croatian)
Hvala Vam na poslanim otpornicima uz moju narudzbu na ime [name removed] Lebar.
Ovaj put bih htjela naruciti senzor plinova. Interesira me detektira li mq135 i CO. Htjela bih ga spojiti na Attiny85 i vjerojatno bi mi trebalo neko napajanje. Pretpostavljam da se senzor aktivira u odredjenim intervalima. Ako biste mi mogli preporuciti i neko napajanje iz Vaseg asortimana bila bih Vam zahvalna.
Originally submitted via the contact form on soldered.com on 7 December 2015. Migrated to the forum for community visibility.
Soldered Support:
MQ7 is a specialized sensor for CO. We don’t currently have it in stock, nor the MQ135. Among sensors that respond to CO and are currently available, we can offer you MQ8 (https://e-radionica.com/hr/mq8-senzor-plinova.html). The ATtiny85 requires 2.7-5.5V. Unfortunately, aside from batteries, we don’t currently have a power supply available. We can offer you a power supply for breadboards (Soldered: Open-Source Electronics, Boards, Sensors & Modules – Soldered Electronics) which steps down to your desired voltage. Regarding measurement speed, we couldn’t find information anywhere in the datasheet. We used a 1 second delay and it worked well; for shorter intervals you would need to test.
Original message (Croatian)
MQ7 je specijaliziran senzor za CO. Ponovno će biti dostupni kroz 10ak dana. Attiny85 je potrebno 2.7-5.5V. Nažalost, osim baterija, trenutno nemamo raspoloživo napajanje. Što se tiće brzine mjerenje, ne možemo pronaći nigdje u datasheet-u informaciju. Mi smo koristili delay od 1sek i to je lijepo radilo, za manje bi trebalo testirati.