The ESP8266 WiFi Module looks great. It’s cheap, contains full TCP/IP stack, WiFi antenna, serial interface… Really great, but it has one caveat: No documentation. Or, to be fair: only chinese documentation.
Digikey made Scheme-It. Scheme-It is an online schematic and diagramming tool that allows anyone to design electronic circuit diagrams. You can utilize an integrated electronic symbol library and the Digi-Key component catalog, as well as share or export drawings. The tool includes a comprehensive electronic symbol library and an integrated Digi-Key component catalog that allows for a wide range of circuit designs. Additionally, a built-in bill of materials manager is provided to keep track of parts used in a design.
The most of us design a circuit, look at it and says: “Hm, it need a heatsink here!” Then we looks in our drawers, find “first suitable” heatsink and use it, believing it fits. Bil Herd shows how to compute heating.
Do you know Eagle? I bet so… But can you imagine Eagle running in your browser? Try Circuits.io – free circuit design tool and easy PCB manufacturing. It can import existing Eagle designs, easily order boards, or just buy a community designed board in e-shop. You can easily do multi layered circuit boards too.