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Is it possible and safe to use available GND and VCC output of GPS port to power esp8286 module ? |
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Replies: 1 comment 3 replies
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Tested the issue myself and now I can confirm GPS port's Vcc & GND leads of JK BMS provide enough power to feed ESP8266 module. Which is excellent as we can combine all components in a single box and connect it to BMS by single cable with appropriate terminal. Active ESP8266 module itself consumes 70mA current (3.3v). GPS socket provides Vcc close to battery voltage (26-27v in my case) I used LM2596 module (tuned it to get 3.3v output before connect) |
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Please be careful because of the common ground. It's recommended to power the ESP isolated. You have to make sure there is no high current flow via the GND pin of the GPS port if the MOSFET turns off. |
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Make ESP module properly isolated assumes using optocouplers for serial connections too. It is good but makes extra complications for schema. |
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You have been warned. There is the risk to kill your setup (BMS or ESP) as soon the Mosfet is turned off. |
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Tested the issue myself and now I can confirm GPS port's Vcc & GND leads of JK BMS provide enough power to feed ESP8266 module. Which is excellent as we can combine all components in a single box and connect it to BMS by single cable with appropriate terminal. Active ESP8266 module itself consumes 70mA current (3.3v). GPS socket provides Vcc close to battery voltage (26-27v in my case) I used LM2596 module (tuned it to get 3.3v output before connect)