NanoboyS3-JR features:

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. 3.3V, 600mA LDO, 12uA deep sleep current.

5. The reversing current blocking diode D2 is rated at 1A with very low leakage current.

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 and 5V presence detection.

9. User LED.

10. U.FL ANT or Whip ANT for Wi-Fi communication.

11. Larger RESET pushbutton, easy to press.

12. Includes a set of male and female headers and a 2-pin JST LiPo battery connector.

13. Size: 1.2" X 0.7" or 30.48mm X 17.78mm.

14. Pin spacing: X--0.1", Y--0.6"

Hightlights:

		Parts included in the package: One NanoboyS3-JR board. Two of 1x12 male headers and two of 1x12 female headers. One 2-pin JST connector, 2mm pitch.

Unique features on the NanoboyS3-JR

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.

NanoboyS3_JR_OLED		NanoboyS3_JR_TFT		12 uA Deep Sleep current

In order to achieve lowest deep sleep current possible, you have 3 basic choices:

1. Use a digital switch and a resistor divider with low value. The resistor divider is only turned on for reading voltage level, can be turned off at 99.9% of time.

2. Use a resistor divider with very high value, the battery voltage level reading will be very unstable. Defeat the purpose of reading battery voltage level.

3. Do not have the resistor divider in your circuits at all. Do not monitor the battery voltage level.

The ESP32-S3 draws a higher deep sleep current than the ESP32-PICO-V3-02.
Our NanoboyPICO-V3-02-JR board's deep sleep current is about 7-8uA. See the video at nanoboypico_v3_02_jr website.

Our more expensive DMM has an auto range feature, but unfortunately it could not display lower than 10uA, but this cheap DMM does. It's just amazing, it's even very accurate compared to other more expensive DMMs.

NanoboyS3-JR example Programs