Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
High stability and no sensitivity to the ambient light
Laser-cut acrylic (plexiglass) enclosure
Flow control capability of the hand-sanitizer/alcohol (efficiency)
Through-hole components (easy to solder)
Single-layer PCB board (easy to fabricate)
Single and cheap...