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Pros & Cons
Pros
Center pin of each three is the common. It's powered off the pi's 5v/gnd pins, and doesn't skip a beat. It functions flawlessly once you wire it correctly.
Cons
Relays appear to have gone bad already. Unfortunately, relay 0 is iffy. Media could not be loaded.
Worked great for 2 mos. It works backwards. Won't work with a 12v low amperage load, or even with continuity tests.
Highlights
Quality
These 4 channel relays came quickly and packaged with the appropriate amount of padding
4 stars due to instructions but a 5 star functioning product
If you just plug in to the power pins in line with the trigger pins your are not using the isolation
While the board and everything does work perfectly the description is lacking that this is a low activated relay
Price
Amazing tech for such an affordable price
Competitiveness
That allows a single connection to provide output power 120vac for example for all four relays in the set
I just send a low signal to the corresponding gpio when i turn on my program
Simply hook a gpio to each of the ports and off you go
3v setup is different than 5v setup i used this board with an ecig cartridge and high amp batteries to create a steampunk hat t... Read More
Overview
- How are reviewers describing this item?
great, low, high and fine. - Our engine has profiled the reviewer patterns and has determined that there is minimal deception involved.
- Our engine has discovered that over 80% high quality reviews are present.
- This product had a total of 564 reviews as of our last analysis date on Dec 5 2023.
Helpful InsightsBETA
Posted by a reviewer on Amazon
However to activate it you should provide the vcc with 5v
Posted by a reviewer on Amazon
The builtin resistance lowers the 5v input to less than 3
Posted by a reviewer on Amazon
There were only around 2 milliamps drawn through this when the pin was set to low
Posted by a reviewer on Amazon
Just connect vcc gnd and shorting any other pin to ground will trigger the relay
Posted by a reviewer on Amazon
Its powered off the pis 5vgnd pins and doesnt skip a beat
Posted by a reviewer on Amazon
I spent about an hour trying to figure out when relay1 didnt work before i noticed that the indicator led is missing
Posted by a reviewer on Amazon
As best as i can tell the led was broken off
Posted by a reviewer on Amazon
Just be aware that they draw enough 5v power that you cant reliably use more than one or two sets powered directly from the arduino
Review Count History
Price History
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