rkhanso
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- Joined
- Jan 24, 2017
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Hello,
I wanted to bump up the signal voltage from the 3.3v of the Raspberry Pi to something a little higher to give some fudge-factor over the SSR minimum input voltage.
I'm using one of the cheap motor-driver boards off ebay, which works perfectly with my 2-channel mechanical relay board. No trouble there.
But when I connect the SSR to the same driver board, it doesn't work. As soon as I connect the SSR to the driver board, the LED on the driver board lights up. When I activate the GPIO in CraftbeerPi, the LED on the driver board gets a tiny bit brighter, but the output of the SSR does not change. Neither does the LED on the SSR come on.
Do I need to connect this SSR differently than the mechanical relay board? I have 5V and GND coming from the Raspberry Pi to both the driver board and the relay board. I have the - terminal of the SSR connected to GND on the Raspberry Pi. The GPIO of the Raspberry Pi is connected to input of channel 3 on the driver board. The + terminal on the SSR connected to channel 3 output on the driver board.
I wanted to bump up the signal voltage from the 3.3v of the Raspberry Pi to something a little higher to give some fudge-factor over the SSR minimum input voltage.
I'm using one of the cheap motor-driver boards off ebay, which works perfectly with my 2-channel mechanical relay board. No trouble there.
But when I connect the SSR to the same driver board, it doesn't work. As soon as I connect the SSR to the driver board, the LED on the driver board lights up. When I activate the GPIO in CraftbeerPi, the LED on the driver board gets a tiny bit brighter, but the output of the SSR does not change. Neither does the LED on the SSR come on.
Do I need to connect this SSR differently than the mechanical relay board? I have 5V and GND coming from the Raspberry Pi to both the driver board and the relay board. I have the - terminal of the SSR connected to GND on the Raspberry Pi. The GPIO of the Raspberry Pi is connected to input of channel 3 on the driver board. The + terminal on the SSR connected to channel 3 output on the driver board.