The Latching Mini Relay FeatherWing lets your Feather board control lamps, fans, and small devices on AC or DC power with just two pins and minimal power draw.
A Feather board without ambition is a Feather board without FeatherWings! This is the Latching Mini Relay FeatherWing. It gives you power to control, and control over power. Put simply, you can now turn on and off lamps, fans, solenoids, and other small appliances that run on up to 250VAC or DC power using any Feather board.
There are two 'flavours' of these FeatherWings, this is the Latching relay. This one requires two pins, a SET and UNSET and instead of keeping the SET pin high, you only have to pulse each pin high for 10ms to latch the relay open or closed. You need two pins but save power. Note, if power is lost, the relay will stay in the last setting.
The other type of relay FeatherWing is the simple Non-Latching relay, it requires only a single signal pin.
Both FeatherWings use the same family of relay. You can switch up to 2A of resistive current at 30VDC or ~40VAC or lower. At 110VDC you can switch up to 0.6A, at 120VAC up to 0.5A, and at 250VAC you can switch up to 0.3A. Check the datasheet for the relay for the exact switching capacity, and of course, for reactive/inductive loads you will need to derate. This isn't a relay you can use to turn on and off your washer/dryer, stick to 60W or less. For up to 1200W devices, check out our Power Featherwing which can handle up to 10A!
Each FeatherWing comes with a fully assembled and tested PCB, header you can use to attach to your feather. You also get a 3-pin terminal block you can use to wire up whatever you are going to be relay-controlling. Some light soldering is required.
Please note: If using with high voltages (> 24V) use care and common sense! High voltages require experience, and are only for use by engineers who are comfortable with guidelines and know how to use safely!
Features
Latching relay FeatherWing for Feather boards
Controls AC/DC power up to 250VAC
Requires two pins (SET and UNSET) with 10ms pulse activation
Low power consumption - pulse control instead of continuous power
Retains last setting if power is lost
Switching capacity: 2A at 30VDC, 0.5A at 120VAC, 0.3A at 250VAC
Suitable for lamps, fans, solenoids, and small appliances (60W or less)
Includes fully assembled and tested PCB
3-pin terminal block for wiring connections
Stacks with Feather boards using standard headers
Minor soldering required for assembly
Specifications
Product Dimensions: 50.8mm x 22.9mm x 11.4mm
Product Weight: 6.4g
Revision History
As of February 5, 2024 - We added a pre-soldered terminal block and updated this PCB with Adafruit Pinguin to make a lovely and legible silkscreen.
