In an ironic way given your background, toaster ovens probably set you up against untenable competition: everybody who has ever built a toaster oven is currently jamming SBCs into them to run PID for "smart toasters". Prices are coming down and features are going up, plus these are product line extensions that create further price pressure on "non-smart toasters".
There could be room to do something interesting with slot toasters, which are sort of a forgotten category.
In an ironic way given your background, toaster ovens probably set you up against untenable competition: everybody who has ever built a toaster oven is currently jamming SBCs into them to run PID for "smart toasters". Prices are coming down and features are going up, plus these are product line extensions that create further price pressure on "non-smart toasters".
There could be room to do something interesting with slot toasters, which are sort of a forgotten category.