0

How to Make a Hot Tub Controller #piday #raspberrypi @Raspberry_Pi

NewImage

Check out itub’s write up on GitHub for a Raspberry Pi controlled hot tub controller:

Raspberry Pi web enabled hot tub controller, supporting a heater (on/off or pool/spa control), air and water temperature thermistors, one two-speed pump, a second pump, (with hardware schematic). Includes freeze protection setting (run pump based on low air temperature) and daily filtering. Can continue to run pump (cool-down) for 15 minutes after heater is turned off.

Some design/development notes…

I built this project first years ago with an Arduino and WiFi (WiFly) shield. It worked well, as the Arduino has plenty of GPIO pins and enough analog pins to deal with everything. The most painful part was the Wi-Fi shield, and it’s (very) beta supporting code. I originally build the controller so that it polled an external service (the cloud!) to get it’s settings, and built an iOS application.

For various reasons (avoiding hosting fees among them), I decided to try this again, but change a few things to see if it worked out better: 1) Use a Raspberry Pi instead, and build everything in Python 2) Don’t use a cloud service — just host a web server on the Raspberry Pi itself. This requires forwarding a port and using dynamic DNS services to get it working, but that turns out to be Not a Big Deal.

Read more


2358Each Friday is PiDay here at Adafruit! Be sure to check out our posts, tutorials and new Raspberry Pi related products. Adafruit has the largest and best selection of Raspberry Pi accessories and all the code & tutorials to get you up and running in no time!


Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.

Join 7,500+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

CircuitPython in 2018 – Python on Microcontrollers is here!

Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/


Maker Business — Rethink Robotics closes shop. Long live collaborative robots #makerbusiness

Wearables — Cleaning is key

Electronics — Serial overkill

Biohacking — Biohacking Resources – Books, Talks and Podcasts

Python for Microcontrollers — CircuitPython @ Hackaday SuperCon #ICYMI @circuitpython @micropython @ThePSF #Python

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.