Originally shared by TechZoneMind Solar Powered ESP8266 module which measure water level and send

Electronics
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Originally shared by TechZoneMind

Solar Powered ESP8266 module which measure water level and send it to server via WebSocket connection.

  1. ESP8266 With HCSR04+ UltraSonic Sensor
  2. Communication to server using WebSocket.
  3. Using PHP Laravel as server instance.
  4. SolarPanel + 18650 LiPo battery provide 24hr power supplay.

http://www.techzonemind.com/solar-powered-water-level-sensor-module-using-esp8266/

2

I see no sign of an inline diode to prevent the solar panel discharging the battery when cloudy / not charging - have you seen any problems like this?

3

Since we are using TP4056, it have built in protection to prevent reverse current flow. If you are not using similar charge controller we should use a diode. View more details on TP4056 spec https://dlnmh9ip6v2uc.cloudfront.net/datasheets/Prototyping/TP4056.pdf.@Joe_Lippa

4

Thanks for the link to the TP4056 spec. How did you connect the solar panel to the charger board. It seems like there’s a solar panel USB type A -> charger board USB type B micro problem to solve.

5

@Joe_Lippa TP4056 charging board i got have soldering points for solar panel input. http://www.haoyuelectronics.com/Attachment/TP4056-modules/2.jpg

6

Thanks, sure I know that. So you’ve basically cut the USB socket off the end of the solar panel lead, stripped back the insulation on the cable and soldered directly to +/-

7

@Joe_Lippa Okay, i think you are referring to one in the list. The solar panel i got has no USB cables, just +/- soldering points.