For years [Edward] has been building professional grade underwater sensing nodes at prices approachable for an interested individual without a government grant. An important component of these is t… ...

The DS18B20 “stainless steel tube” waterproof digital temperature sensor used here comes with a 90cm long cable for remote temperature sensing over the range of -55 to 85°C. To be able to use the ...

Temperature sensing isn’t the only trick capacitors can do. We’ve seen them turned into touch sensors before, and used to turn a 3D-printer into a 3D-scanner.