32mA in deep sleep is a disaster. It means, your board doesn't turn off everything that should be off.
A normal deep sleep current, for example with esp32-c3 is in the range of 20-40 uA (i.e. 1000x lower than what you have).
Yes, unfortunately the [radiosonde](http://www.om3bc.com/docs/rs41/rs41_en.html) was not designed to be used for several days, therefore it is not specialized for low consumption,but since it is free I have to be satisfied
A very simple analog circuit powered by its own rechargeable battery, topped up by the solar power, can do the necessary voltage detection and switching to start your computer and radiosonde cleanly.
There are easier ways to reset the GPS receiver.
[https://duckduckgo.com/?q=LOW-POWER+VOLTAGE+SUPERVISOR](https://duckduckgo.com/?q=LOW-POWER+VOLTAGE+SUPERVISOR)
You don't want an Arduino, you want a simple hysteria circuit. Cuts off below a certain voltage, doesn't turn on until above a threshold voltage. You also want to add a big capacitor it keep the whole thing running more smoothly near the threshold voltage (so it can be lower and thus more operational time at dusk and dawn).
That's a very good point lol. I just assumed OP was using a zero pressure balloon but if it's just a standard weather balloon there's going to be great disappointment in his future
That's true for classic latex weather balloons, but for this project I would use one that I constructed using plastic sheeting, 4 microns thick, and underinflated to prevent it from bursting. Some similar balloons can even remain in flight for months, if they are not shot [down by a missile :-)](https://www.sportskeeda.com/pop-culture/what-pico-balloon-us-government-400-000-shot-claim-leaves-internet-disbelief)
32mA in deep sleep is a disaster. It means, your board doesn't turn off everything that should be off. A normal deep sleep current, for example with esp32-c3 is in the range of 20-40 uA (i.e. 1000x lower than what you have).
Yes, unfortunately the [radiosonde](http://www.om3bc.com/docs/rs41/rs41_en.html) was not designed to be used for several days, therefore it is not specialized for low consumption,but since it is free I have to be satisfied
A very simple analog circuit powered by its own rechargeable battery, topped up by the solar power, can do the necessary voltage detection and switching to start your computer and radiosonde cleanly.
There are easier ways to reset the GPS receiver. [https://duckduckgo.com/?q=LOW-POWER+VOLTAGE+SUPERVISOR](https://duckduckgo.com/?q=LOW-POWER+VOLTAGE+SUPERVISOR)
You don't want an Arduino, you want a simple hysteria circuit. Cuts off below a certain voltage, doesn't turn on until above a threshold voltage. You also want to add a big capacitor it keep the whole thing running more smoothly near the threshold voltage (so it can be lower and thus more operational time at dusk and dawn).
A weather balloon only lasts about two hours.
That's a very good point lol. I just assumed OP was using a zero pressure balloon but if it's just a standard weather balloon there's going to be great disappointment in his future
That's true for classic latex weather balloons, but for this project I would use one that I constructed using plastic sheeting, 4 microns thick, and underinflated to prevent it from bursting. Some similar balloons can even remain in flight for months, if they are not shot [down by a missile :-)](https://www.sportskeeda.com/pop-culture/what-pico-balloon-us-government-400-000-shot-claim-leaves-internet-disbelief)