• 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.


  1. NameToRemember

    How can i control 3 seperate buttons using a wireless remote control?

    I want to be able to use a remote control key fob like this... (Click here to visit ebay link) to wirelessly control 3 buttons. I am a window cleaner using a water pump in my van to pump water to my water fed pole. To do this I'm using a speed controller which can raise the pressure of the...
  2. M

    Wireless doorbell to latching ON/OFF Switch

    I would like to use a wireless doorbell I have to control a latching ON/OFF Switch, I found this great video My receiver circuit is slightly different as it has a CD4069 but I believe it won't matter as the wires going to speaker are used. The schematic is not clear on the part where the 2...
  3. M

    Speed and reliability in wireless network

    After reading countless of articles about internet protocols, I am in the process of rolling my own wireless one between microcontrollers in which one acts as a master and the remaining as slaves. The wireless devices I use is HM-TRP configured at 38400 baud and connected to the UART of each...
  4. N

    Fast wireless transceiver module

    I am looking for a low delay wireless module which can send and receive data in a very short time. Data length is just a few bytes generated by a microcontroller connected by UART/SPI interface. The application requires repetitive send and receive of data in less than 10ms, which means time...
  5. C

    Wireless: short-hop vs. short-range — what's the difference?

    Can you explain me the difference between short-hop wireless and short-range wireless, if any?
  6. D

    Trying to ID a connector type...cause it's broken!

    Hello, I do PLC programing and often have to play around in circuits. While I'm usually ok, on this job I stumbled on a connector I don't recognize. I'm hoping I'm on the right thread! It's a WiFi antenna...I've never ever installed wifisystems so I'm stumped!! I usually, 99% of the time, deal...
  7. M

    Bluetooth Noob

    Hi Can someone give me some info on how to get started with Bluetooth ? I want to send the output of a multimeter via Bluetooth. Is there an out of the box solution ? (It's for a proof of concept so something that I could just hookup and pair would be good) Any ideas on how to get started ...
  8. savaslt

    Very interesting device development (projector, camera, wireless charging, fingerprint all-in-one)

    Hey! I just registred here several moments ago because I am currently working on my own project and I've got a lot of questions on electronics, sensors, gadgets right now because the project requires a lot of knowledge in it but unfortunately I don't have, so I came here. Let's move on the...
  9. R

    Arduino Wireless Master to multiple Slaves.

    Hi all, This is my first post in this forum, as I'm mainly involved in Microcontrollers (PICS etc.) ... I have a requirement where I want to use an Arduino as a front end master controllers to some sort of a wireless duplex network, 'talking to' a series of battery powered mobile slaves units...
  10. D

    Pulse Sensor using NRF24L01 for Wireless Transmission

    Hello, I'm starting with this new project of mine, I am just new to this thing and I hope I'll make it work. I will be using a Pulse sensor https://www.sparkfun.com/products/11574 and it will be apply to a suit that is often used by the gym persons. And to avoid using many numbers of wires...

Latest threads

EE World Online Articles