Hello @maxstack I am not sure. Stamp Pico can be use after you use M5 burner to connect to M5 server. And after that, you can use it in UI Flow Website by connect the MacAddress.

@mati said in Ultra Low Power Stick, Is There a Market?: HI, what about this idea: wake connect to wifi display to 100 read light sensor ping m5stack.com wait 5 sec display go down to 30 deepsleep 10 sec. all is native base on latest m5stack uiflow. only the ping is extra lib imported and bit modded. https://youtu.be/7Cj48WF9Azw When you say "all is native base on latest m5stack uiflow" do you mean the uiflow firmware or the Blockly blocks? Because I don't see a block for deep sleep in uiFlow. I'm interested in getting deep sleep working with uiFlow.

Putting the LCD on "off" with ST7735_DISPOFF and the controller in sleep thanks to ST7735_SLPIN does not change power consumption. Putting SH200Q to sleep does not help neither so their power supply should be correctly shut down by the AXP192. So we really need help from @m5stack here: did you measure the off/sleep power consumption of the board. Which values do you get ? Thank you