PospaPunk

What is wrong using TP4056 with protection? It's common and very cheap.

Any link or building instructions for the plane?

Any link or building instructions for the plane?

Any link or building instructions for the plane?

Those TP4056 has overcharge protection, so you can keep them in charger after full charge.

So it's something for morse code?

Since your mouse looks for one AA battery with voltage 1.5V and your LiPo has charged voltage 4.2V i don't recommend this. Even if it works for your mice it can immediately destroy different mouse. And there is no over-discharge protection. Why you didn't use the version of TP4056 with over-discharge protection and output pads?

The SMS API - is it free? At lease for few messages per week?

Can you please post link to buy motor and link to duck model?

That is my point. Even if the module with output pins is used, it seems it will still charge the battery when load is connected. Overcharging LiPo may damage them or even worse.

So you just connected few LEDs with battery. Everybody knows how to do that. But the most important - how did you make a good flying kite?

I read here (https://www.best-microcontroller-projects.com/tp4056.html) that "If you have a load connected to the battery then this will change the current detected so the TP4056 may never terminate the charging process.".I would like to know your opinion, sice i think most users will use it for charging with load.

For this - use "for", not while, you will have one line less.New and recommended approach is to use for each whenever possible.for (int item : array) {System.out.println("One item of the array is: " + item);} Prerequisites are beginner level of understanding Java syntax, but using arrays and loops definitively belongs to beginner level.And use:while (x < array.length) { //print the item x++;}Using this approach you will save one line (you don't have to save length to separate variable) and instead x = x + 1 you can write x++ - much simpler and much more pretty.

Add some characteristics, like maximum range outdoor, how long it will last with this battery, frequency range, sound quality etc. etc. Otherwise on Aliexpress you can order FM spy bugs with all parts, some of the already pre-soldered.

Missing the part with (i guess 3D printed) enclosure.

Warning: don't use code for Arduino supplied here! This module needs "warm up" period (approx. 1 minute, some sources talks about 2 minutes, 15 seconds is not enough) where it will randomly trigger output. This may confuse everone who is using the module first time!Also the the trigger output takes allways some minimal time (don't remember know, i guess 2 seconds). At this this time it is suitable to suppress checking output state.

Actually you can use multiple power sources due to 'autoselect' - so you may use USB input as power source and jack together. Read documents.Input 7-12V for jack (or VIN pin) is recommended. But you can use 6 - 20V, again, read official documents and specifications.One very important thing is missing - max. current draw from 5V and 3.3V as power "output". This is important since many enthusiasts use 5V directly to power motors.

This is not a datalogger :-(

Don't connect servo power to Arduino 5V. Never. separate power supply should be used (at least 5V 250mA, 500-750mA is better). This can reset your Arduino or damage USB port (when powered from computers USB).

How are you lighting/starting the flame by electronics?

Links are broken (due to shortening).

How much current can you draw from this case? Some of them are set to only 0.5 Ampers. Also is there some kind of undercurrent protection? (Some of them has auto-shutdown when there's low current draw. It is not suitable for powerinv low power devices like Arduino Nano). But anyway - good job!

Can you please upload photos of motor and shaft mounting?

thats more than 35$ or maybe over 50$.

Can you post details about axis (shaft) and pipe for shaft and how do you mount it to the motor axis? Where did you get it from? I looked at the video, but it is not clear. I have problems mounting motors, axis and propellers. Do you have any similar projects, where are you also using boat motors, shafts and axis?

Where i can buy components and how much they costs?

Which propellers and motors do you use? Can you provide more details and links?

Github link not found :-(