Want to create the perfect set for a unforgettable Halloween party? Or add some uncanny atmosphere to a kid’s room? This fun interior decoration project describes how to create a Smoking Crystal Skull: a upsetting cloud of fog coming out of a terrifying translucent skull with breathing illumination. The project requires some level of experience in electronics, programing and basic crafting with carton and cables. The cost is relatively cheap, well under $80, with standard components that can be sourced easily (see below). It took me a couple of evenings to create this Smoking Crystal Skull. The brain that controls the Smoking Crystal Skull is a small ESP8266 processor module, similar to Arduino with Wifi capabilities. The internal fog is created by an ultrasonic mist maker covered with water. A fan ensures a dynamic air flow, on top of the pulsing illumination, coming from a waterproof led strip. All of that is enclosed in a translucent glass skull. The Smoking Crystal Skull may also be used as a perfume diffuser, but make sure to include some pumpkin fragrances... Check out the full instructions: [https://www.instructables.com/Smoking-Crystal-Skull/](https://www.instructables.com/Smoking-Crystal-Skull/) \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- The overall project remains relatively cheap, using standard components, as listed here: * 1x Clear Glass Skull Shaped Water Dispenser ([link](https://www.ebay.com/itm/224584684679?_trkparms=ispr%3D1&hash=item344a4a5487:g:AI8AAOSwA01hJU6K&amdata=enc%3AAQAGAAACsPYe5NmHp%252B2JMhMi7yxGiTJkPrKr5t53CooMSQt2orsSvtkx670Z0mbyfWqmxLFLYYb2HOhjGlm3P05FT7gYN0Uy8Yt232D%252Bso2%252B5UPdlzfHh4kJ3Xn%252F7EagBaaw5hyZ9smpZvnuj13ViskVwbcPpB%252BYVJQWbTTo0%252BN9cgxRUBI4vUTs9FYQh6X8nywOP4apFpmsA8g9leOOcwad0diI6qw%252FVaJxh%252FnUystHEr81QPO6KP3CLknT0WAX4Or7SbotH0ymPf%252B3OLv%252Fia2NGhloR0mkhDEMngZijwQxiuVqOSl0z7xCxpPE06fyuY8dS2kFtNcnxBwY5CCOXHqbxk6CcKtmVvrC5FezXyoJYqqhzLsmoNqwpPu9XKGVfmmhYsujczhfqCC22ztnm9S0JwQG1TJEYnJbOfWasRIR1HESuMdzrvvkBuESILXtK90TuV3cuQKSLaDwUn6iHLZWITYHZ92BLQDzu%252BE6Zyf%252FzwV7%252FDc7oCrToGMOoBSsYCSDnsAtTgr3%252F9BjXS0LycPutNNwixhaqz8bta%252FT2gny2XfZ8FfeQRh56n%252F3%252F3yFRCQKNac5ohBIimH6QOCZqpkAF0CKjaqe%252ByEfIsUcMCaKV4qsCtGA9KVcb1ZpQyPDatOEqbnNZdBm1s6uxDEH0g0Q6bJtNFP%252FvxAKPY%252FQxaopzWME4eKHRgNeOY8H1zcyeNnm%252BXk4tuwkybS5hqEOYmkMn%252Ffw1FTWttS00wyV75RA7SR8k4xtT6acyczz7Y83VexPO0m4DrIAUNjMlf2p0PEiGyGvCjc09jAo1Sk9VrAmXdjkgn%252F60WjGoC2uUuafUGJf75u7%252FBkLB16V4l5wvhVXUioEzSJ8s%252Bve%252BnrlXhGq3L8rupvURQjWQ%252BZMUJOAC2wqU86HNH8Nl6LmvFcT0zjQ03B53hQ%253D%7Campid%3APL_CLK%7Cclp%3A2334524) or [link](https://www.mygift.com/products/glass-skull-drink-dispenser-clear)) - The Crystal Skull * 1x carton box to hide the electronics ([link](https://www.depot-online.ch/fr/p/coffret-cadeau-en-papier-kraft-9955)) - The Brain Control Box * 1x ESP8266 generic SoC ([link](https://www.aliexpress.com/item/32665100123.html?spm=a2g0s.9042311.0.0.27426c378QjbKg)) - The Brain * 1x Ultrasonic mist maker 24V with 230V plug ([link](https://www.aliexpress.com/item/4000396214500.html?spm=a2g0o.productlist.0.0.29b75687oTkwhG&algo_pvid=984c4fa8-85fd-46ea-9a92-d5e7474ac800&algo_exp_id=984c4fa8-85fd-46ea-9a92-d5e7474ac800-2&pdp_ext_f=%7B%22sku_id%22%3A%2210000001624975083%22%7D)) - The Fog maker * 1x Small Fan TZL9110 ([link](https://www.aliexpress.com/item/1005002820308981.html?spm=a2g0o.productlist.0.0.3e0c5941akGu8v&algo_pvid=57658344-8225-4d94-89c1-ae912e505450&algo_exp_id=57658344-8225-4d94-89c1-ae912e505450-14&pdp_ext_f=%7B%22sku_id%22%3A%2212000022339400283%22%7D)) - The Fan for dynamic air flow * 1x Waterproof LED Strip ([link](https://www.aliexpress.com/item/32890021915.html?gps-id=pcDetail404&scm=1007.16891.96945.0&scm_id=1007.16891.96945.0&scm-url=1007.16891.96945.0&pvid=459def65-e02c-407a-b868-c31aa254ce70&_t=gps-id:pcDetail404,scm-url:1007.16891.96945.0,pvid:459def65-e02c-407a-b868-c31aa254ce70,tpp_buckets:668#0#131923#6_668#888#3325#7_668#2846#8115#2000_668#2717#7559#87__668#3374#15176#837)) - The LED strip for illumination * 1x Small OLED 0.96 display ([link](https://www.aliexpress.com/item/1005001648068791.html?spm=a2g0s.9042311.0.0.27426c37EsVtMU)) - The Debug console * 1x DC-DC 24V-5V module ([link](https://www.aliexpress.com/item/33004374185.html?spm=a2g0s.9042311.0.0.27426c37GCmhLw)) - to power the brain from 24V power plug * 2x Mosfet IRLZ44 transistors ([link](https://www.aliexpress.com/item/32584412777.html?spm=a2g0s.9042311.0.0.27426c378QjbKg)) - to isolate the power from the command * 1x pcb or 1x breadboard 400pt ([link](https://www.aliexpress.com/item/32982684547.html?spm=a2g0s.9042311.0.0.27426c37vRLR7N)) * 3x rocker switches and 1 main on/off switch * 5x 10kOhm resistors * misc connectors and 22AWG wires * soldering iron, hot glue gun and other regular electronics tools (tape, screwdriver, wire strippers, ...) I  included links to AliExpress stores, but depending on your location you may source the components from amazon (not available in my country) or other stores.