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The TEF6686 DSP radio chip is a popular FM DX remote tool recommended by many players and controlled by an STM32F103C8T6, and a DIY open-structured TEF6686 radio can be made using a PCB as a panel to minimize the volume, with all components and wiring using LCSC EDA for a more mini digital radio that still has a strong TEF6686 reception effect, making the radio fit in your pocket!

On the basis of this radio, you can also try to make a smaller volume machine. Based on the NXP TEF6686 chip, the volume is reduced by more than 1/3 after the redesign, but the performance is not reduced and the receiving sensitivity is still strong. The appearance first uses an open design and later adds a PCB shell, with a battery capacity of 1300mAh (the maximum space inside the machine can accommodate a 1500mAh volume of battery cells), an LCD screen still at 1602, and an STM32F103C8T6.

The radio screen will not be too demanding, except to do experiments rarely use higher resolution dot matrix LCD, LED screen or color screen, after all, the radio is for listening rather than watching, do not need too much graphical interface. Standby display field strength, frequency and other key indicators are enough.

The new version of the mini TEF6686 DSP radio is really small and exquisite, and it is super stylish when receiving medium wave with U disk version or simple version of medium wave magnetic bar antenna. Of course, the adaptation antenna of the FM broadcast segment is also DIY.

What do you think?