The designated connection point for the radio/usb module does not have enough high voltage (printed on the board 4.7V, but measured only 4.1V) and because of too low voltage the USB is not working. Because of that, I disconnect module from that power supply port and made another connection which will provide 5V: negative to the GND and 5V positive to the anode side of the 1N4007 diode. See the pictures! After that modification the USB port starts to work and everything is OK. This DIY kit is very nice with good sound and a lot of functions. There are no instructions, but you do not need them, because everything is written on the pcb board. I hope this information will help you to assemble full working kit without any troubles.

The designated connection point for the radio/usb module does not have enough high voltage (printed on the board 4,7V, but measured only 4,1V) and because of too low voltage the USB is not working. Because of that, I disconnect module from that power supply port and made another connection which will provide 5V: negative to the GND and +5V positive to the anode side of the 1N4007 diode. See the pictures! After that modification the USB port starts to work and everything is OK. This DIY kit is very nice with good sound and a lot of functions. There are no instructions, but you do not need them, because everything is written on the pcb board. I hope this information will help you to assemble full working kit without any troubles.

The designated connection point for the radio/usb module does not have enough high voltage (printed on the board 4.7V, but measured only 4.1V) and because of too low voltage the USB is not working. Because of that, I disconnect module from that power supply port and made another connection which will provide 5V: negative to the GND and 5V positive to the anode side of the 1N4007 diode. See the pictures! After that modification the USB port starts to work and everything is OK. This DIY kit is very nice with good sound and a lot of functions. There are no instructions, but you do not need them, because everything is written on the pcb board. I hope this information will help you to assemble full working kit without any troubles.

Very good sound quality. Soldering requires a bit of skill, but is quite doable. I have already built 5 of this device for friends and acquaintances, as the radio reception is also excellent.

Sehr gute Tonqualität. Lötarbeit erfordert etwas Geschick, jedoch gut machbar. Habe schon für Freunde und Belkannte 5 von diesem Gerät gebaut, da auch der Radioempfang hervorragend ist.

Very good sound quality. Soldering requires a bit of skill, but is quite doable. I have already built 5 of this device for friends and acquaintances, as the radio reception is also excellent.