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Bee Motion S3

A compact, open source ESP32-S3 PIR motion sensing board

$660 raised

of $3,000 goal

22% Funded

Back this project to help bring it into existence.
Funding ends on Jan 31, 2023 at 03:59 PM PST.

$30

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ESP32 + pir motion sensor

Bee Motion S3 is a feature rich ESP32-S3 with a built-in PIR motion sensor that makes building your motion detection based projects easy. This compact board is feature packed with PIR sensor, light sensor, RGB LED, 2 LDOs, LiPo charging circuitry, battery voltage monitoring and a Stemma connector for easily adding Adafruit or Sparkfun sensor boards to your project.

Bee Motion S3 gives you full control of your hardware, with no cloud services that store or sell your sensor data.

What kind of projects can you make with the Bee Motion S3?

The possible use cases are endless.

Compatible with Arduino, CircuitPython, MicroPython and ESPhome

The Bee Motion S3 supports many different programming languages so you can use it with your favorite programming language. Not only are multiple languages supported, I also provide many example sketches in each language along with helper libraries to help make getting your project up and running as easy as possible. Check out the project Github for all the code examples.

Features & Specifications

Comparison Table

Bee Motion S3Everything Presence OneESP32-S3-DevKitM-1-N8
Price $30 $75 $16
Dimensions 61 mm x 23 mm 62 mm x 42 mm 68 mm x 26 mm
Built-in PIR Motion SensorYes Yes No
Sensitivity AdjustmentYes No N/A
Detection Range3 m 12 m N/A
Ambient Light SensorYes Yes No
Battery Operated OptionYes No No
LDOs2 1 1
Lowest Power Consumption100 uA 160 mA 1 mA
RGB LEDYes No Yes
Stemma ConnectorYes No No
Useable GPIO Pins18 4 39
USB-CYes Yes No
Micro/Circuit Python SupportYes No Yes
Bread Board CompatibleYes No Yes
Open SourceHW + SW SW only HW + SW

Support & Documentation

The Bee Motion S3 is fully open source which you can find all the relevant documentation on our Github

Manufacturing plan

I own my own pick and place machine which makes assembling PCBs fast and easy. I also will fully test each Bee Motion S3 before it is shipped to Mouser Electronics, where it will be distributed to all backers.

Support and Logistics

After our production run is complete, we will box everything up and send it along to Crowd Supply’s fulfillment partner, Mouser Electronics, who will handle distribution to backers worldwide. You can learn more about Crowd Supply’s fulfillment service under Ordering, Paying, and Shipping in their guide.

Risks & Challenges

With the silicone chip shortage there is always some risk that the components needed to produce a product may be in short supply. With that in mind I have designed this board to use a variety of different components that can be swapped without compromising the overall design. That being said there are a couple components that are unique to this design and I have been in constant contact with the manufacture of these components to assure they will be available once I go into production.

In the Press

Hackster News

"Designed for long-term operation on battery power, this compact board packs a tinyML-capable dual-core processor and PIR sensor."

Linux Gizmos

" This open source board also provides a LiPo battery charge circuitry for portable IoT applications and a Stemma connector to easily integrate additional sensor boards."

PCBWay Community Blog

"Bee Motion S3 is an ESP32-S3 with abundant features. Its built-in motion sensor can help build motion based projects in an easy way. "


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Produced by Smart Bee Designs in Delphi, Indiana.

Sold and shipped by Crowd Supply.

Bee Motion S3

An esp32-s3 powered PIR sensor development board. Includes a lens cap for the PIR sensor and 2x header pins

$30 $8 US Shipping / $18 Worldwide

About the Team

Smart Bee Designs

Delphi, Indiana  ·  smartbeedesigns  ·  smartbeedesigns.com

Smart Bee Designs is dedicated to making unique ESP32 boards with quality components, support for several programming languages and US based support.

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