Take a battery, check its voltage using either a battery checker or multimeter. Then plug it in to the drone (remove propellers first!). If the reported voltage in the configurator (circle in red in the below image) is not the same as your measured voltage, then you should calibrate the...
MCUs, whether ARM or RISC-V, are at the core of embedded systems and motion controllers. They provide the application control layer, execute bus communications protocols and provide a user interface. However, in a typical design, actuators, motors, and other mechanical components have a much lon...
If you need more UART ports, Betaflight has a feature called SoftSerial, which converts certain solder pads into “digital serial ports.” These are similar to UARTs but have a much slower update rate, making them unsuitable for time-critical applications such as receivers and GPS. They can ...
The center pin is still getting the positive voltage regardless; only the signal and ground will be reversed and this is okay for the servo and "usually okay" for the device you are plugging it into. The servo just won't work until you correct the plug orientation. I have afull page d...
All right, so what else do we need, a microcontroller and a driver for the DC motor. I chose the DRV8871 DC motor driver which can handle up to 3.5 amps of current, and the Atmega328 microcontroller. I chose the surface-mount version of it, as it’s much more compact than the DIP...
Showing the “3 dB down” point of a signal amplifier Let’s look at a real-world example with the SIRIUS LV (low voltage) signal amplifier. The rated bandwidth of this model is 70 kHz. In part, this is because the SIRIUS LV is not a stand-alone signal conditioner, but has a fully...
Voltage:5V-8V Torque:double what you think you will need There are many websites sellingDC motors. Also considering buyingservos. Both are equally as complicated to implement and cost about the same. Each have their own advantages. Servos are much easier to control, but they generally are ...
Much has been written about choosing the right motor, estimating performance, installing the motor in your plane, and so on. This month, I’ve decided to go back to basics and describe how the motor actuallyworks. Do you need to know this to fly electric models? Probably not, but a goo...
Most microcontrollers today are8 bit, meaning they have a range of 256 (2^8=256). There are a few that are 10 bit, 12 bit, and even 32 bit, but as you increase precision you also need a much faster processor. What does this bit stuff mean for ADC? For example, suppose a sensor...
the reason might be that the windings are humid and need to be dried, If the motor has been operating for a long period of time, the minimum insulation resistancemay drop to a critical level. As long as the measured value does not fall below the calculated value of minimum insulation resi...