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Connecting sensors to the internet using an arduino and a raspberry pi

Shane Ormonde7 years ago7 years ago511 mins

As part of the PlantBot project, I wanted a way to look at sensor data over the internet. These sensors are moisture, light and pressure. The main one is moisture, the other two were just added in because I had the parts lying around. Here is a block diagram outlining each of the steps to…

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FFTalk : a way for multiple sensors to talk to one receiver

Shane Ormonde7 years ago7 years ago210 mins

The title description is quite broad so allow me to explain more clearly what I’ve been working on for the past couple of weeks. Think of the television remote or more specifically using IR diodes and IR receivers to transmit information: This setup is all good when only one IR diode is transmitting at any…

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Tiva C launchpad FFT with real time plotting using pyQtGraph

Shane Ormonde8 years ago8 years ago206 mins

Circuit Diagram: The biased signal generator signal is connected to AnalogIn 1 on the Tiva C which is pin PE_2. Signal Gen and Tiva C ground is common. The two 10k resistors from a voltage divider which will halve the 3v input to give a 1.5 v bias. The signal from the signal generator will…

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Tenma 72-7735 DMM: Serial interface with Python

Shane Ormonde8 years ago8 years ago1415 mins

The Tenma 72-7735 is a lower end DMM that comes with quite a few handy features including an opto-isolated serial output. This serial communication is over a cable with a male db-9 rs-232 serial connector on one end and a connector housing a photo-diode that fits into the multimeter on the other end. Here is…

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  1. Mikhail Grushinskiy on OpenWave : Development of an Open-Source and Low-cost wave sensorMarch 6, 2023

    I’ve wrote something similar: Estimating wave height from IMU accelerometer on a moving boat https://bareboat-necessities.github.io/my-bareboat/bareboat-math.html code: https://github.com/bareboat-necessities/wave_height_from_IMU

  2. Artsy on Laser cut carboard planetary gearJanuary 30, 2023

    I absolutely love this! Thank you for making this video and sharing your file. I will be making projects with…

  3. Raffi on Matchbox Car v2 (fail)December 11, 2022

    You could just resolder another ATtiny? Cool Blog, thanks for putting your stuff out there!

  4. irfan on atmega16u2 virtual serial example using LUFA LibraryMay 28, 2021

    this device is used for what

  5. wattnotions on OpenWave : Development of an Open-Source and Low-cost wave sensorFebruary 28, 2021

    Hi Alex, Once I had the vertical acceleration to displacement script working, I could use it on any set of…

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