NanoboyS3-JR

It is pin and size compatible with TinyS3 board and can be used as its drop-in replacement with more features.

It's a good choice for IoT, robotics, wearable, home monitoring and home automation applications.

It can be programmed using Arduino IDE and other development tools.

1. The new more integrated ESP32-S3-FH4R2 with internal 4 MB flash and internal 2 MB PSRAM.
2. 32-bit 240 MHz Dual Core.
3. 2.4 GHz Wi-Fi & IEEE 802.11b/g/n, Bluetooth 5, BLE+Mesh.
4. 12uA deep sleep current. 
5. The reversing current blocking diode D2 is rated at 1A with very low leakage current. Most 1A diodes have a much higher leakage current. 
The current for a 3.3V LDO regulator, sometimes two LDOs, has to pass through this diode. The bigger the better and lasts longer.
6. 18 GPIOs.
7. Standard WS2812B RGB. The RGB is turned off when it's not in use. It will extend battery life.
8. 5V power LED indicator.
9. User LED.
10. Whip ANT for Wi-Fi communication.
11. Larger RESET pushbutton does not hurt your finger.
12. Breadboard friendly, the battery connector is placed on the top layer.
13. Includes a set of low profile male and female headers and a 2-pin JST LiPo battery connector.
14. Size: 1.2" X 0.7" or 30.48mm X 17.78mm.
15. Pin spacing: X--0.1", Y--0.6".

 

1. A digital switch is added to turn off the battery level test circuit after the test is done. It will reduce deep sleep current significantly.
2. With a Low Pass Filter, the battery charge status LED does not flicker when a battery is not connected.
3. Long Reset Press (LRP) to enter bootloader mode, it's simple and easy to use, press the reset button until a red LED is lit
to enter bootloader mode. No need to press 2 buttons at the same time. Once you use it, you may like it.

 

See schematic and sample programs at: https://www.trainer4edu.com/nanoboy/nanoboy_s3_jr/index.html

Introductory offer for $9.9