Yesterday the pump house froze up once again, and because we did not catch it early enough it froze up and broke the pump. This prompted me to deploy what I have working for the temperature puck so that hopefully we can catch it earlier next time. The deployment is as follows.
As a first step to creating the temperature puck I decided to make a simple app with MIT App Inventor and send it messages with an Arduino MKR 1010.
A spin off project was created from this project in honour of halloween. It was made to create some spooky sounds that were triggered by the HC-SR04 proximity sensor. While creating this off shoot project I learned a lot of different things that will help this project along once I come back to it and this update will go into depth about it.
It occurred to me that the reason niether of the far old cables were working might be that the pull up resistor being used may not be allowing good communication with the sensor and the Arduino. After reading it turns out that I was correct and I previously even wrote about it here, https://github.com/PhysicsUofRAUI/binTempSensor/blob/master/how_to_docs/assemble_pcb.md. The furthest one is still not quite working.
I ordered pcbs of the current design and they are in already. There are two different linear regulator circuits that can be used (one using the LM317 and the other using MCP1700), and an ATMEGA328 on the board for the control.
The old version of the Grain Monitor was redeployed with the currently working 2 cables. The two cables are currently not working, but that might be due to the use of a too large pull up resistor.
So I ordered a selection of larger speakers to try and make my project louder, but it did not initially work out. I did not yet have the transistor recommended by the talking arduino tutorial (TIP122) and instead I used the more generic 2n3904.
After thinking about the ultrasonic sensor being used I was concerned that it may take too much energy/current for the application so I used my multimeter to test the current draw from the trigger pin, echo pin, and Vcc. The results are below.
The goal of this project is to make a very simple LTE-M battery powered temperature monitor.
This goal of this project is to make a retrofit kit that one can use to make a regular plastic owl into a hooting owl. The owl will give off a short hooting sound if something comes within 2 feet of it. The owl will be designed to operate without needing new batteries for one year. The kit will be easy enough to put together such that a begginer electronic hobbyist or a motivated bird scarer can put it together.
As the title may suggest this is an update describing the development of the simple owl hooting prototype with the Arduino Uno. It is functionaly the same as the Arduino Base version except that instead of buzzing when something is close to the sensor a speaker will hoot.
A simple circuit using an Arduino Uno, a buzzer, and a HC-SR04 was created so the buzzer buzzes whenever something is about 30cm away from the HC-SR04 sensor.