Oddbean

It’s powered through a 12V power supply. The WT32-SC01 is 240mAh. The NV10USB+ bill acceptor has a standby of 0.2A and running of 1A. The DG600F(S) Multi Coin Acceptor has a standby of 50mA and max running of 450mAh. I haven’t done the sums myself, but assuming on standby and running for 30 minutes a day: To determine the battery and solar power requirements for your setup, we need to calculate the total energy consumption of the system and then size the battery and solar panel accordingly. ### Energy Consumption Calculation 1. **Power Consumption in Standby Mode:** - **WT32-SC01:** 240mA - **NV10USB+ Bill Acceptor (Standby):** 200mA - **DG600F(S) Coin Acceptor (Standby):** 50mA - **Total Standby Current:** 240mA + 200mA + 50mA = 490mA 2. **Power Consumption in Active Mode (for 30 minutes per day):** - **WT32-SC01:** 240mA (unchanged) - **NV10USB+ Bill Acceptor (Active):** 1A - **DG600F(S) Coin Acceptor (Active):** 450mA - **Total Active Current:** 240mA + 1000mA + 450mA = 1690mA = 1.69A 3. **Daily Energy Consumption:** - **Standby Time per Day:** 24 hours - 0.5 hours = 23.5 hours - **Standby Consumption:** 0.49A * 23.5 hours = 11.515 Ah - **Active Consumption:** 1.69A * 0.5 hours = 0.845 Ah - **Total Daily Consumption:** 11.515 Ah + 0.845 Ah = 12.36 Ah ### Battery Sizing To ensure reliable operation, it is common to size the battery to provide at least 2-3 days of autonomy (no solar input), and to prevent discharging below 50% to extend battery life. - **Required Capacity for 2 Days Autonomy:** 12.36 Ah/day * 2 days = 24.72 Ah - **Considering 50% Depth of Discharge (DoD):** 24.72 Ah / 0.5 = 49.44 Ah So, a **50Ah battery** would be a suitable choice to ensure reliable operation with some margin. ### Solar Panel Sizing To size the solar panel, consider the total daily energy consumption and the average solar insolation (sunlight hours) in your location. Let's assume you have an average of 5 peak sun hours per day. - **Daily Energy Requirement:** 12.36 Ah/day * 12V = 148.32 Wh/day - **Required Solar Panel Power:** 148.32 Wh/day / 5 hours/day = 29.66 W To account for inefficiencies and potential losses, it is advisable to oversize the solar panel by about 25-30%. - **Adjusted Solar Panel Power:** 29.66 W * 1.3 = 38.56 W So, a **40W solar panel** would be appropriate to reliably charge the battery and power the system. ### Summary - **Battery:** 50Ah 12V battery - **Solar Panel:** 40W 12V solar panel These components should provide sufficient power to run your system, considering both standby and active periods, while ensuring a reliable and sustainable power supply.