Tiny Arduino-Compatible nRF24 Wireless Board

Once you’re ready to control your Arduino project remotely, there are a number of options, including the nRF24L01+. These modules are great for use with RC vehicles and robotics, but if you’re trying to save weight and space, attaching things together as separate PCBs isn’t really the best way to go. Plus, you’ll need to add H-bridges, MOSFETs and the like if you want to control higher-current devices like DC motors and servos.

For an all-in one solution, YouTuber Electronoobs has developed a “Small Radio Receiver Board,” which packs a built-in nRF24L01+ module, along with an ATmega328P-AU, a pair of H-Bridge chips, and a single MOSFET. All of this is squeezed into a package just a little bigger than a coin, and weighs in at only 3 grams. It can even be programmed using an FTDI adapter and the Arduino IDE to meet your needs. More data on the project, including a parts list and schematic is available here.

‘Noobs expounds on this build in the video below, showing how it can be used with DC motors, servos, lights, or even coil-based actuators. He also sets it up to control a very simple RC car with 4 gearmotors powering it, and what appear to be actual gears used as wheels. Finally, he does some experimentation towards a future RC paper airplane, with ailerons controlled by homemade coil actuators.