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Dfrobot Solar Power M. Micro V1.0 and ESP32 how to mod. circuit to power esp32

alien1983 1011 2
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  • #1 17633614
    alien1983
    Level 13  
    Hello,
    I have this tile :
    Link .

    Parameters:
    FEATURES
    •Constant voltage ratio MPPT algorithm, maximizing solar power conversion
    •Designed for 1V ~ 3V small solar panels, ultra low power design
    •Solar/USB two charging methods
    •Multiple protections extending battery life

    APPLICATIONS
    •Wireless Sensor Network
    •Bluetooth iBeacon
    •Solar Powered Toys

    SPECIFICATION
    •Micro Solar Power Management Module
    •Solar Power Management IC: SPV1050
    •Solar Input Voltage (SOLAR IN): 0.5V~4V
    •Battery Input (BAT IN): 3.7V Lithium Battery
    •Maximum Charge Current: 100mA@USB IN;70mA@SOLAR IN
    •Over-charge Protection Threshold: 4.2V
    •Over-discharge Protection Threshold: 3.1V
    •Regulated Power Supply: 3.3V 90mA@BAT IN 3.7V .
    •Quiescent Current: <3 uA
    •Protection Functions ◾ BAT IN: Over-discharge/Over-charge/Reverse Connection Protections
    ◾ OUT: Short Circuit/Over Current Protections

    •Operation Temperature: -40℃~85℃
    •Dimension: 30.0mm*30.0mm
    •Solar Panel 2V 160mA
    •Nominal Voltage (VMP): 2V
    •Nominal Current (IMP): 160mA
    •Open Circuit Voltage (IOC): 2.4V
    •Short Circuit Current (ISC): 190mA
    •Solar Cell Material: Monocrystalline Silicon
    •Other Features: Waterproof, Oil Resistant and Corrosion Resistant
    •Dimension: 50mm*50mm

    The advantage is the very low current consumption of the circuit - •Quiescent Current: <3 uA .
    Unfortunately Disadvantage - •Regulated Power Supply: 3.3V 90mA@BAT IN 3.7V .
    Is it possible to modify this board to pull esp32 with Wifi ?
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  • #2 17633965
    Anonymous
    Level 1  
  • #3 17634850
    alien1983
    Level 13  
    Yes I want to power from this board I have esp32-wroom-32u
    Link .

    The chip was to use python , remotely reprogram itself when needed (load image and/or script), communication via MQTT protocol for sending measurement results . To measure soil moisture and temperature outdoors.

    The esp32 and esp8266 have in any case too high a current consumption for the capabilities of the controller on this board.
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