The story is about one 3D printer and a man name @KJDOT.
Because of pandemic, all kinds of epidemic medical and hygienic application goods are out of stock abroad. For being one part to help, we specially invited KJDOT to make a guideline, about making an automatic control disinfect appliance, to show a way of home DIY by 3D printing.
First, you need to have one 3D printer machine, which is an Anet ET4 FDM 3D printer in this guideline.
Second, design one usable circuit, for this appliance works by IR sensing technology. The picture below shows the full configuration of designed circuit, which is found quite stable after testing.
This circuit is divided into TP4056 charging part, pressure-boost part and IR switch part. All the operation starts by battery charging of IR switch part, ends by reach of pump operation voltage via 5V of pressure-boost part voltage.
Third, turn the circuit into PCB file and send it to specific website to realize the circuit board.
After getting the PCB board, weld electronic component onto the board. Then carry to next step if the test passed.
Fourth, get one glass bottle and the diameter of glass lid. Then get the size of PCB.
Fifth, make a 3D printing Cura model and splice it with measured size.
Then transfer the spliced G-code model into micro SD card and insert the card into Anet ET4 3D printing machine.
Turn on the machine and start printing.
After a while, you will get the model. The printed product has exact the same size and cut-out of G-code model. Because of high-precision printing of ET4 3D printer, the following fabrication is very easy.
Sixth, put all the parts together.
Finally, carry out the test.
The test outcome is quite satisfactory. When I put my hands under the hose, hand wash came out quite fluently. I took several similar tests, which all ended with rapid response. This lid can be charged by battery or electric line. When connected to electric line, the red hint light will penetrate through the hole on the lid. Simple and funny, you deserve this practical DIY printing product.
Thank you for your watching.