Specifically this card is named "Mobogen" which is purposefully designed for smart phone application, so the user can monitor and control some specific features via his smart phone.
Terminal blocks: this card only has three terminal blocks as you can see in the pictures, the middle one with two screws on it, is simply for card's 12VDC power supply, as usual. Whereas the side blocks are connected with RELAYs open, close and common points for driving the switch and crank functions of the GENSET.
Microcontroller: in this PCB, ESP8266 is used for providing online connectivity whereas its program is compiled in Arduino IDE and new BLYNK IOT app is used for performing online actions.
Regulators: two voltage regulators are present on this board, first one is 12V to 5V whereas the second one regulates 5V to 3.3V for powering up the ESP8266. Power circuitry also has a 470uf cap and a 6.3uf capacitor which is a specific requirement for the ESP8266.
Two Relays: in this board, only two RELAYS are present for switch and crank purpose of the GENSET.
Transistors: two nos. of BJT BT136 transistors are used to drive the RELAYS when button is pressed on smart phone Blynk IoT app. app screenshots are also available at the end of this post.
LED indicators: two nos. Red colored LEDs are present on this board, which are associated with their respective RELAYS and present the ON/OFF condition of the RELAYS.
Note: this specific board does not have any sensing lines and relevant sensing components for mains or GENSET power detection as this design was only aimed for remotely START/STOP the GENSET.
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