We know both the 555-based capacitive soil moisture sensing and the approach to "just stick an ESP8266 on it" to make a wireless sensor. However the question needs to be asked why the antenna is always OUTSIDE the soil when the 2.4 GHz band lends itself...
Hi GuysAnyone of you ever played around with building an ultrasonic flow sensor? I'd like to build a clip on sensor that I can stick over a pipe that detects when water is flowing - its possible, but the industrial units costs £££.....
From Mike Rankin's blog:https://0miker0.wordpress.com/2016/10/12/samd21-giveaway/What:I’d like to give away one SAMD21 logger/sensor board to someone, wherever in the world you are.Why:I’m a hardware guy, not a programmer. I’ve had fun designing this...
I needed to connect a touch pad to the touch sensor IC with a wire long about 15 cm. Both the wire and the pad are sensible to the touch and this may be annoying as the user can activate the touch switch placing his hand near the wire instead to the...
I am trying to measure sand flux (how much sand travels from container A to container B) not that accurately (grams would be nice, milligrams would be fantastic). What type of sensors would help me do that?
Edit : Thanks for all those who provided valuable references and comments, I realized that sensor-less is not a good idea for my application, as it is low speed and as sensors are becoming more available with reasonable integration effort.____________________________________________________________________Hi...
Can someone suggest a reasonably-priced submersible water pressure sensor? It needs to be able to measure up to 3.5 bar (can be higher than this). Ideally it would have at least a 35m cable, though I can make a waterproof join if need be. ...
I'm looking for someone that can hack together a CO2 sensor and gas regulator for a project I am currently working on. Here is essentially others have done it. Contact me if interested. 1. Step by step guide including code on how to build a wireless...
There's a video of this revolutionary device, able to bring led light in remote areas by using the "energy of the soil, stored in its nutrients and microorganisms released by the plants".No more details, I am a bit skeptical, but it looks like...
Im trying to measure the lpg level on a lpg cilinder, the issue, what kind of sensor can i use for that?im going to try it with a gas pressure sensor but im open to suggestions
I will be using sensor MiCS-6814 for measuring concentration of gases. So how to interface with microcontroller and how is the working of sensor.I have downloaded the datasheet but i have few queries like,1. I got the circuit of interfacing from...
I'm building machine vision application using ESP32 and STM32 development boards with builtin image sensor. the only way to transfer images to PC for debugging is through serial ports which is is very slow. what is the best options to get...
I am looking for a camera/image sensor for a project. It needs to be compact and at least 5megapixel at 30fps, but cameras like that seem to be priced from 150$ each on digikey and mouser. I would use ebay but for this project I do not want...