2021-06-19, 12:10 AM
(2021-06-18, 11:43 PM)holgerw Wrote: use an relay here , no, never" but for signaling the level to some transistors in between - you may use lots of relays, but not directly! the 3.3 Voltage is only for signaling - never use it for power delivering, it only an little poor chip there. realys need an amplifie aka transistor and mostly use 12 v to react.
try an little googleing on interfaces for relays.
holgefr
This is what I want to use - the 3.3v is only for signaling: 5V Single Channel Relay Module 10A Australia (core-electronics.com.au)
Controlling a Solenoid with Raspberry Pi and a Relay - Tutorial Australia (core-electronics.com.au)
I have 5 DS18B20 sensors running all accurate with no problems.
Thanks for your help everyone