With these new capabilities we were able to develop an affordable WIFI-capable wallbox that has a very high standard of safety and also conforms to all of the legal requirements. As the name suggests it uses a powerful microntroller with WIFI of the type Espressif ESP32 (ESP32-WROOM-32E). Additionally we will release our new ESP32 Brick shortly. You can already find some Information and a beta in our forum. We will officially introduce these with a new blog entry soon. We exploited some synergy effects with our project to introduce C/C++ Bindings for microcontrollers. This module works by introducing an AC fault current if a DC fault current is detected. To achieve this we use a third party module that detects the DC fault current and triggers the normal 30mA Type A RCD. The Bricklet can detect if the contactor doesn't switch or if it sticks in the switched position.Ī DC residual current protection that protects from DC voltage fault current is required by law. The Bricklet will permanently check the grounding and it will check every switching operation of the contactor. It was important to us that we support all of the EN 61851-1 safety features. The EVSE Bricklet can be used to charge an electric vehical with AC voltage through a Type-2 connector. It is of course possible to connect a Brick to read out data and to control the charging, but it is not necessary. This means that it can be used without connecting a Brick to it. This controller is the first Bricklet that can be used stand-alone. We will describe more technical details in a separate blog entry. With the new EVSE Bricklet (coming soon) we developed a EN 61851‐1 conform charging controller (EVSE) from scratch. We could not use any of these projects as a foundation for a commercial product.īecause of this we decided to develop something ourself. It is of course impressive what people can develop in there free time, but we found that these projects are nearly always lacking in safety and conformity to standards. On the other site there are open source hobbyist projects. Open source, durability and access for the customer are often foreign words for these companies. Most of them are offered by big multinational companies. With a fleet of five company EVs the topic of electronic vehicle charging became even more interesting for us. In the end of 2019 we purchased our first company EVs. For this project we did not work on the actual charger circuitry, but it was our first contact with the field. It began wit the SM!GHT project, where we helped to develop sensors and EV chargers within streetlights. Tinkerforge is engaged in the e-mobility field for a long time already. Today we will start with something unusual. In this time we were not inactive, to the contrary, we are working on many new products that we want to introduce in the near future. There was relatively little activity in our blog lately.
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