433Mhz sensor board [V2]

Name: 433Mhz sensor board [V2]
SKU: 16950
Price: 6.25 USD
Availability: OutOfStock
Rating: 4.75 (1 reviews)

(1 Review)

Cheap ultra low power board designed to transmit 433MHz and add a sensor

Designed by Nico in France

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$6.25

On A Break

Cheap ultra low power board designed to transmit 433MHz and add a sensor

Universal 433 MHz sensor board This is a cheap ultra low power board designed to receive up to 3 sensors. It runs on an ATTiny84 microcontroller which can be programmed via ISP (2x3 pads exposed). Wh…

Universal 433 MHz sensor board

This is a cheap ultra low power board designed to receive up to 3 sensors. It runs on an ATTiny84 microcontroller which can be programmed via ISP (2x3 pads exposed).

Why did you make it?

Can connect almost every cheap Chinese sensor + battery friendly ;)

What makes it special?

Compatible, Ultra low power, Hackable. It is compatible with many sensors, but you have to write your own code for it. When it does nothing, every peripheral can be powered down. Thus it consumes less than 6µA when asleep --> 1.2 years one a single coin cell (CR2032).

What you can do:

Temperature (DS18B20 tested)
Temperature and humidity (DHT22 tested)
Light photoresistor
Soil moisture capacitive sensor (tested)
Water pressure (tested)
Flow rate sensor (tested)
Leakage sensor
PIR motion sensor
Door sensor
... any Analog or 3pin digital sensors should be compatible

If you want fully working sensor kit, please go to check my "433 Sensor kit".

Notes and usage

This is for advanced users only! You must know how to flash an ATTiny before use, but I personally learned quite quickly as it is Arduino compatible :)

Power source: you can choose between CR2032 3V lihtium primarry cell or 14500 3.7V lithium.
Transmitter: You can choose between short range kit (20m indoor and less than 4 walls) which is the default option, or a long range kit (which includes a 19cm antenna, transmits up to 60m and 4 walls).
Voltage: 2.7V -> 5.5V if you don't want to take an option.
Energy: 5.1µA @8MHz WDT enabled
Sensors: up to 3 sensors. 3-pins digital or analogic sensors. Max input current: 20mA per sensor. The sensors are powered directly from the microcontroller pins.
Size:

Programming note : The CKDIV8 fuse is activated by default on a new microcontroller, I strongly suggest that you read the fuses before flashing them with AVRDUDESS.exe for example.

Have fun!

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Review Breakdown

Average Ratings

Product: (5.00)

Documentation: (4.00)

Shipping: (5.00)

Communication: (5.00)

Juan | Aug. 22, 2019

Works great

I set the sensor to monitor fridge temperature, and a few month after it still working great! The seller helped me setting it because the documentation was not very clear to me.

$6.25