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

alien1983 861 2
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
  • #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
    khoam
    Level 42  
    alien1983 wrote:
    Is it possible to somehow modify this board to pull esp32 with Wifi ?
    .

    Do you want to power the esp32 from this board (via Regulated 3V3 Output)? And what esp32 module specifically do you have in mind? Does it have to be an esp32, or isn't an esp8266 enough?
  • #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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