hit_light_picture

Effect video: https://www.bilibili.com/video/BV1tV411M75s/?spm_id_from=333.337.search-card.all.click&vd_source=ab0987073d5fe9bae6f543cfd327ed8cExperience
sharing: The essence of light painting is through the different light transmittance of each layer of the PCB board, and Form a complete light and shadow painting. When the top solder mask layer and the bottom solder mask layer are opened at the same time, the light transmittance is the best and the pattern is the brightest. The top silk screen layer has the most obvious light when the light is not on, and has poor light transmittance when the light is on. The bottom solder mask layer has windows, and the bottom window pattern can be seen after the light is turned on. The wiring on the top and bottom layers should be as beautiful as possible. When the light is turned on, the shadow of the wires is more obvious. You can use ordinary and solid filling methods on the top and bottom layers. shadow on bottom