This amazing ADKey board features 10 keys that can effortlessly drive your DFPlayer Pro, DFPlayer Mini, or Voice Recorder Module. No programming or various resistors are needed! It comes with 20 delicate button caps that offer a comfortable hand - feel and are easily integrated into projects. You can connect your preferred keys to the board via the welding pads on both sides. Additionally, it can serve as the ADkey input for a main - controller, expanding 10 keys for your main - board through just one analog port. Applications include driving DFPlayer PRO, DFPlayer Mini, Voice Recorder Module, and main - controller button expansion. Specification: Power Supply is 3.3 - 5V, key size is 6*6*7mm, and product size is 40*40mm/1.57*1.57”.

Using this ADKey board is a breeze. First, connect it to your DFPlayer Pro, DFPlayer Mini, or Voice Recorder Module without having to worry about programming or using lots of resistors. If you want to use your own favorite keys, just connect them to the welding pads on the sides of the board. To use it as an ADkey input for your main - controller, simply link it through one analog port and you'll get 10 extra keys for your main - board. When it comes to power, make sure to supply between 3.3V and 5V. As for maintenance, keep it away from water and dust. If there are any issues, check the connections first. With proper use, this board will serve you well for a long time.