Viewing a response to: @cryptos/custom-28-relay-controller-board-for-raspberry-pi-3
COOL! Your power problems can be resolved by powering the relay with a separate power supply. You may also need some kind of photodiode isolation to protect the pi and ensure 100% on/off functionality for all 28 relays. Are these solid-state relays? I've had the non-solid-state analog ones fail after a few thousand switches and only use solid-state now. Where did you buy it?
| author | whytehorse |
|---|---|
| permlink | re-cryptos-custom-28-relay-controller-board-for-raspberry-pi-3-20170717t134826267z |
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The Pi does not have a problem with the power with all 28 relays powered on, and the chance of having more than 1 on at a time is pretty slim in normal operating conditions. They are non-solid state relays, but the load is not going to be big, so they should be just fine. It is a custom design, not commercially available.
| author | cryptos |
|---|---|
| permlink | re-whytehorse-re-cryptos-custom-28-relay-controller-board-for-raspberry-pi-3-20170717t135107515z |
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So what's the problem that causes you to only be able to use 25?
| author | whytehorse |
|---|---|
| permlink | re-cryptos-re-whytehorse-re-cryptos-custom-28-relay-controller-board-for-raspberry-pi-3-20170717t141557299z |
| category | technology |
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When powering on/off the Pi the GPIO pins 2, 3, 14 change state temporary... switching on and off the relays on them.
| author | cryptos |
|---|---|
| permlink | re-whytehorse-re-cryptos-re-whytehorse-re-cryptos-custom-28-relay-controller-board-for-raspberry-pi-3-20170717t142019568z |
| category | technology |
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