Banggood Dear AgeK, Thank you for choosing Banggood and sorry for the inconvenience caused. We have forwarded your feedback to our customer service team and will give you a proper solution within 24-48 hours.  If you have any other inquiries, please do not hesitate to contact us by filling out the form at this link:  http://www.banggood.com/Contact-Us_hi111 We will do our best to assist you.  Best regards, Banggood Team

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Riaan Thatis true, but what I found easy enough to do is to de-soldier pin 15 and give it 5v, that sets the board to 80Hz. The default for pin 15 is ground; ie. 10Hz

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