This modified crystal oscillator board is provided to DIY players who have certain electronic circuit foundation and hands-on ability. The most basic component data, component pin and capacitor resistance are unclear. There is no digital multimeter electric iron, welding peripheral tools, please solve. DIY hands-on has certain risks. Please disconnect the power and eliminate the static electricity before welding. Please bear any responsibility for any problems. This shop only provides technical support and does not take risks!

Board modification is very easy, as long as the ability to remove the crystal and capacitor on the original board can be changed, you can contact the online customer service, we will give you a very careful modification instructions tutorial!