power_switch
Differences
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| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| power_switch [2024/05/20 19:17] – [Partlist (in buildup order)] breaker27 | power_switch [2025/07/12 20:26] (current) – [Partlist (in buildup order)] breaker27 | ||
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| ^ Amount | ^ Amount | ||
| - | | 1 | PCB Power Switch 1 | | {{ parts: | + | | 1 | PCB Power Switch 1 | | {{ parts: |
| - | | 2 | Diode 1N4148 | + | | 2 | Diode 1N4148 |
| - | | 2 | Resistor 560R green-blue-brown | + | | 2 | Resistor 560R green-blue-brown |
| - | | 1 | Resistor 1M brown-black-green | + | | 1 | Resistor 1M brown-black-green |
| | 2 | Resistor 22k red-red-orange (optional for battery voltage measurement) | | 2 | Resistor 22k red-red-orange (optional for battery voltage measurement) | ||
| | 2 | Resistor 39k orange-white-orange (optional for battery voltage measurement) | | 2 | Resistor 39k orange-white-orange (optional for battery voltage measurement) | ||
| - | | 1 | IC holder | + | | 1 | IC holder |
| - | | 1 | Voltage regulator LP2950Z | + | | 1 | Voltage regulator LP2950Z |
| - | | 1 | Transistor BC547C | + | | 1 | Transistor BC547C |
| - | | 1 | LED 2mA | LED1 | + | | 1 |
| + | | 1 | LED 2mA | LED1 | ||
| | 1 | Connector AVR ISP 6pin angled | | 1 | Connector AVR ISP 6pin angled | ||
| | 1 | Connector Switched Output 3pin | X1 | | 1 | Connector Switched Output 3pin | X1 | ||
| - | | 1 | Connector 1 pin header (for serial TX debugging) | + | | 1 | Connector 1 pin header (for serial TX debugging) |
| - | | 1 | Capacitor | + | | 1 | Capacitor |
| - | | 1 | Capacitor | + | | 1 | Capacitor |
| - | | 1 | IC ATMega328 | + | | 1 | IC ATMega328 |
| - | | 1 | Relay FTR-K1C (230V, 16A) | K1 | + | | 1 | Relay FTR-K1C (230V, 16A) | K1 |
| - | | 1 | Transceiver PCB RFM12B | + | | 1 | Transceiver PCB RFM12B |
| - | | 1 | Antenna (82,2mm wire) | + | | 1 | Antenna (82,2mm wire) |
| maybe extra pins, at your opinion. | maybe extra pins, at your opinion. | ||
| Line 43: | Line 44: | ||
| * **RFM12B:** You should also check the voltages first before soldering the module. At the place for the radio module the pad beside the antenna and at the opposite side the third pad should read about 3.3 V. For soldering, read [[rfm12b_soldering|the RFM12B mounting instructions]]. | * **RFM12B:** You should also check the voltages first before soldering the module. At the place for the radio module the pad beside the antenna and at the opposite side the third pad should read about 3.3 V. For soldering, read [[rfm12b_soldering|the RFM12B mounting instructions]]. | ||
| * **Relais:** If you want to switch high currents, especially at high voltages, it is recommended to solder the wires directly to the relais pins on the bottom of the PCB. | * **Relais:** If you want to switch high currents, especially at high voltages, it is recommended to solder the wires directly to the relais pins on the bottom of the PCB. | ||
| + | * **R4+R5:** The values of the resistors need to be matching your battery voltage so that the voltage measured from the R4+R5 voltage divider is not higher than 3.3V (the maximum voltage the ATmega can measure with its 3.3V power supply). Both values can also be higher to reduce battery consumption (calculate the current using Ohm's law). The values should not be too high, considering the input impedance of the ATMega ADC pins of around 1 MOhm. | ||
| {{https:// | {{https:// | ||
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| ===== Add battery measurement support (PCB V1.1) ===== | ===== Add battery measurement support (PCB V1.1) ===== | ||
| - | If you want to add the possibility to measure the battery voltage / percentage, which is a feature | + | If you want to add the possibility to measure the battery voltage / percentage |
| - | {{:powerswitch_v11_battery_mod.jpg?500|}} | + | {{:powerswitch_v11_battery_mod_1.jpg? |
| + | {{: | ||
power_switch.1716225442.txt.gz · Last modified: 2024/05/20 19:17 by breaker27