Repair of a supposedly faulty Pioneer amplifier and conversion of it's volume control to a remotely operated motorized type using an Arduino. More detail over at my website - http://www.ianjohnston.com/index.php/videos/9-video-blog-010-pioneer-amplifier-repair-motorized-volume-control-conversion ... https://www.youtube.com/watch?v=wrnq3tEWRyU

Day or night, summer or winter my workshop temperature can swing around quite wildly so I needed a better more centralized solution and without breaking the bank.......so I decided on a hack! Air-conditioner = Inventor Cool: https://www.inventorairconditioner.com/air-conditioning/portable-air-conditioners/cool-air-cooler-8000-btu Brainboxes ED-038 Ethernet to Remote IO: http://www.brainboxes.com/product/ed-038/ethernet-to-3-relay-3-digital-in USB Thermometer: http://www.dogratian.com/products/index.php/menu-sensors/menu-usb-tnh-type-a-sht10 Nicehash Miner: https://miner.nicehash.com/ I should have mentioned in the video that originally the aircon was always in cooler or fan mode when on, i.e. the fan was permanently running 24/7. There was no facility to have it go into 'equilibrium' itself. I have created that equilibrium state by soft powering down the air-con via the ED-038, and luckily it's easily brought out of that state by soft starting it again. Also, by setting a low temp on the air-con itself, i.e. 16degC as seen in the video I ensure the compressor will run when the ED-038 selects cooler mode. Without this the air-con could auto-switch to fan mode. I guess I got lucky by choosing an air-con that allowed this hacking to take place! PS. The miner makes a damn cheap heater btw! Stuff to do: - Add an overall over & under temperature setpoint feature so that if something happens and temps go wild then the air-con will be shut down and the mining app & my app will completely close, i.e. pseudo failsafe. - Add in some logic so that if fan mode is detected as being on too long and the temp still hasn't gone down enough in that period into equilibrium then cooler mode will be jump started. - Add some override buttons on the app so any mode can be set irrespective of what the temp does. I.E. I might want to force cooler or heating mode to adjust the temp artificially. - Facility to save the current setpoints. - Add a web app so I can make tweaks from anywhere! Visit my website for lots more - www.ianjohnston.com Help me make more of these videos: Pledge using Patreon - https://www.patreon.com/IanSJohnston Donate using PayPal - https://www.paypal.me/IanSJohnston ... https://www.youtube.com/watch?v=Z2sR9aD4a3Y