It is produced in Sweden, using a unique roll-to-roll manufacturing technique that enables efficient mass-production of the modules. The Epishine OneCell, with its high performance and innovative design, is a combination that the market has not seen before. For a viable solution, the device must be integrated with a solar cell that is both high in performance, and flexible in design. Today, the majority of sensors and low-power electronics rely on disposable batteries, resulting in a higher environmental impact and increased maintenance costs due to frequent battery replacements.ĭevices using light power provide an excellent solution to these issues, but often design choices such as buttons or other form factor issues can limit the available surface area for the solar cell. Following their previous solar cells, the new OneCell has the same market-leading high performance in low-light, but with an added focus on design. You could just put the standard 'FTDI header' on each of your custom boards and then use a single USB to TTL serial adapter between all your boards.Swedish Epishine is launching its second revolutionary product to the market. Some adapters don't even break out the DTR or RTS pin, without which you will need to manually reset the microcontroller at just the right time on every upload. If you get an adapter with a non-standard pinout, you would need to use a mess of jumper wires to adapt it to the standard pinout. That will allow you to plug the adapter right in to an Arduino Pro Mini, or many other boards that use this standard pinout. I do recommend that you get one which uses the standard 'FTDI header' pinout: There are others available with other chips like the CH340 and they are also available in other forms, including the 'FTDI cable' style. That one is the cheapest acceptable one and it uses the counterfeit FT232 chip. The USB to TTL serial adapters I'm referring to are these sorts of things:įT232RL 3.3V 5.5V FTDI USB to TTL Serial Adapter Module for Arduino Mini Port | eBay I think you're right that hand soldering the ESP32 module is not very challenging (though I have never soldered a castellated board so I'm no expert on this topic).

Diptrace esp32