About this 3D model
The A1 mini enclosure can be printed with the A1 itself. The enclosure is a circle with a diameter of 180, which is just the right size for printing. This update abandons the previous version because the effects were not satisfactory after multiple tests. It has been replaced with a desiccant version. The desiccant box is fixed by magnetic suction. The magnet used is a magnetic sheet with a diameter of 10mm and a thickness of 1.5mm. There is a point to note here: try to use PLA for printing. I found that the magnetic sheet would not hold tightly and the desiccant box would fall off when I used PETG. If you want to use PETG, you can try scaling the desiccant box to make the magnet fit tightly. The lid of the enclosure can be bought directly from Taobao, a 176 diameter circular acrylic board with a thickness of 3mm. It's only 5 yuan a piece, which is still cheap. Because of the size, ordinary spools are difficult to put in. Here, I provide the spool of Bing, but I haven't drawn the shaft. If you don't buy their materials, you will need to rewire it yourself. The hygrometer is an embedded hygrometer bought from Taobao, 5 yuan each. It's not about accuracy but high cost performance.