BitnByteGuy

Hello, I was procrastinating this project for very long time but now got some time to work on it. It is solar charge controller rated for 12V battery and Max charging current is 10Amp. Controller using in it is Megawin MG82F6D17 8051 based MCU. I am using it because of 12Bit ADC for more accurate voltage reading and it's built-in PCA for PWM generation. Charging methodology is CCCV. For Bulk mode battery will be charged in Constant Current Mode and when it reaches the certain level controller switches to Float mode where tickle charge current is to keep it charged.

 Panipuri water vending machine controller is new product I am working actively, The water will dispense when proximity sensor is triggered and chutney mixed water must keep mixing so that solid particles in water does not settled down to bottom which dilutes the tase of panipuri water. So I designed a circuit with 2 MOSET outputs one is for Vending The Water and another for Mixing The Water, system operates on 12V DC and has +5V Regulator onboard for Microcontroller and Proximity Sensor.  Real challenge was to develop it on cheapest microcontroller to put cap on final pricing, also the controller must have EEPROM to store some parameters. Controller has 2 Buttons to adjust Dispensing Quantity which is proportional to Time, and Pressure of Dispensing Motor which I achieve using PWM Duty Control based MOSFET Driving. These settings are kept in EEPROM and Recall after every power-up. PCB is double Side PTH as it is very smaller and have some SMD Components. It Cost around 35 IN...