Cześć chciałbym zrobić drona z pewnego poradnika (linku jeszcze nie mogę zamieścić na tym forum, dlatego przekopiuję ten akapit).
Transistors
We need 4x MOSFET transistors and choosing one might be tricky. Firstly, they need to withstand the used power and current by the motors and secondly, the threshold voltage has to be quite low, otherwise Arduino won't be able to turn them ON fully (in the case of N-type MOSFET). In my case the max current is 2.75 A with voltage of 3.7 V. This means I need a MOSFET, which would at least withstand around 4 - 5 A just in case (will also heat up less). I ordered some from Farnell (MOSFET Transistor, N Channel, 6 A, 20 V) but you are free to look into alternatives such as MOSFET Transistor, N Channel, 8 A, 20 V (these are actually identical to the previous ones but they have additional legs to be soldered to ground to work as a heat-sink. This isn't needed as previous ones didn't heat up at all). Both of them had threshold voltages of 600mV, which is good. If you are to look for alternatives, try not to go more than 1V, but also if you want to use the provided PCB, make sure the sizing is the same, plus the given transistors in here already have a free-wheeling diodes inside thus will save some space on the PCB. (Total weight <1g).
Dużo części już mam, ale mam problem z tranzystorami, w poradniku są podane z farnella, aczkolwiek wolę ich stamtąd nie kupować, bo ogólnie wyjdzie mi to dość drogo. Najchętniej to zamówiłbym tranzystory odpowiadające wymaganiom z poradnika na Aliexpress. Macie jakieś linki albo możecie mi pomóc znaleźć coś co będzie pasować?
Transistors
We need 4x MOSFET transistors and choosing one might be tricky. Firstly, they need to withstand the used power and current by the motors and secondly, the threshold voltage has to be quite low, otherwise Arduino won't be able to turn them ON fully (in the case of N-type MOSFET). In my case the max current is 2.75 A with voltage of 3.7 V. This means I need a MOSFET, which would at least withstand around 4 - 5 A just in case (will also heat up less). I ordered some from Farnell (MOSFET Transistor, N Channel, 6 A, 20 V) but you are free to look into alternatives such as MOSFET Transistor, N Channel, 8 A, 20 V (these are actually identical to the previous ones but they have additional legs to be soldered to ground to work as a heat-sink. This isn't needed as previous ones didn't heat up at all). Both of them had threshold voltages of 600mV, which is good. If you are to look for alternatives, try not to go more than 1V, but also if you want to use the provided PCB, make sure the sizing is the same, plus the given transistors in here already have a free-wheeling diodes inside thus will save some space on the PCB. (Total weight <1g).
Dużo części już mam, ale mam problem z tranzystorami, w poradniku są podane z farnella, aczkolwiek wolę ich stamtąd nie kupować, bo ogólnie wyjdzie mi to dość drogo. Najchętniej to zamówiłbym tranzystory odpowiadające wymaganiom z poradnika na Aliexpress. Macie jakieś linki albo możecie mi pomóc znaleźć coś co będzie pasować?
