29-12-2019, 21:45
Hi Stefan,
I don't see any problem in keeping the input voltage at a minimum of 9V, indeed I even think it is preferable. 9V or 12V DC/AC wall adapters are easier to find than a 5V AC/DC adapters and tend to be cheaper for 2 or 3 Amps. What you think?
In this case, could you keep the actual design with the batteries in series?
Can we just adjust the current DC/DC convert for the desired output voltage (From 5V up a voltage near the Input Voltage). If yes, that is simple great. It will work with any WeatherDuino device, from receivers to the transmitters, or any 5V devices like the WiFi WD units, or even any other future WeatherDuino device.
(29-12-2019, 10:23)engolling Wrote: Thank your for your Feedback.
The actual idea is to supply the device with the voltage rail comming from the power supply and the batteries only provide power if the supply fails.
This works fine now in a range of 9-12V but not at 5V since the carger is not able to boost the voltage. Supply must always be higher than battery voltage.
I don't see any problem in keeping the input voltage at a minimum of 9V, indeed I even think it is preferable. 9V or 12V DC/AC wall adapters are easier to find than a 5V AC/DC adapters and tend to be cheaper for 2 or 3 Amps. What you think?
In this case, could you keep the actual design with the batteries in series?
Can we just adjust the current DC/DC convert for the desired output voltage (From 5V up a voltage near the Input Voltage). If yes, that is simple great. It will work with any WeatherDuino device, from receivers to the transmitters, or any 5V devices like the WiFi WD units, or even any other future WeatherDuino device.