Solid State Relays are a good way to handle AC at decent amperage.
Lets use this as an example Sparkfun SSR
www.sparkfun.com
So specs say 7.5mA at 12V. So even assuming worst case scenario 7.5mA at 3.3V GPIO.
I have a total GPIO Pins power budget of 40mA on my Rock Zero 3E.
I should be able to drive four of these with reserve. Does that sound correct?
I worry because range of voltage is 3V-32VDC and GPIO voltage of 3.3V is close to low end.
To I worry about holding this voltage for hours.
The comments section on Sparkfun site seem to indicate Pi works fine driving them.
I have been considering using a relay cape to drive SSR as buffer. What do you think?
I am building a Power Strip controlled and monitored by GPIO. Less parts the better.
Lets use this as an example Sparkfun SSR
Solid State Relay - 40A (3-32V DC Input)
A solid state relay (SSR) allows you to control high-curent AC loads from lower voltage DC control circuitry. Solid state relays have several advantages over mechanical relays. One such advantage is that they can be switched by a much lower voltage and at
www.sparkfun.com
So specs say 7.5mA at 12V. So even assuming worst case scenario 7.5mA at 3.3V GPIO.
I have a total GPIO Pins power budget of 40mA on my Rock Zero 3E.
I should be able to drive four of these with reserve. Does that sound correct?
I worry because range of voltage is 3V-32VDC and GPIO voltage of 3.3V is close to low end.
To I worry about holding this voltage for hours.
The comments section on Sparkfun site seem to indicate Pi works fine driving them.
I have been considering using a relay cape to drive SSR as buffer. What do you think?
I am building a Power Strip controlled and monitored by GPIO. Less parts the better.
