Worlds most advanced ESP32-C3 based WiFi & BLE IoT-buttonDesigned by makermoekoe in Germany
The Picoclick-C3 is the big brother of the C3T. It is a tiny WiFi and BLE IoT button for several applications. Originally designed for smart home things, the Picoclick can also be used as an actuator…Read More…
The Picoclick-C3 is the big brother of the C3T. It is a tiny WiFi and BLE IoT button for several applications. Originally designed for smart home things, the Picoclick can also be used as an actuator for IFTTT automations or as an MQTT device. It is based on the single core ESP32-C3 RISC-V processor and therefore comes with tons of useful features. Next to the usage of it as on IoT-button the C3 is able to be used as a tiny development board because it has an extension port where external hardware can be connected to.
Compared to the Picoclick-C3T the C3 comes with the most advanced features:
For sure the FPC extension port is the most interesting feature of the Picoclick-C3. The port leads out the battery voltage, the switched 3.3V output of the device, two pulled-up GPIOs and the button line, which can be used to externally activate the Picoclick. With two pulled-up GPIOs on this port, the device is able to communicate with other hardware over I2C. Furthermore the button line can be used to let this external hardware activate the Picoclick device by firing an interrupt or trigger an output. For example:
With the extension port on the Picoclick-C3 it is easy to connect to other hardware. In order to use the Picoclick to develop new projects, the FPC cable can be broke out with this FPC breakout board and an FPC cable, which can be added to the order if you want. Further documentation of the breakout board can be found here.
Apart from the breakout board there are ready-to-use boards for the extension port available:
Except the OLED extensions, all these boards can be used to activate the Picoclick by firing an interrupt or, for the encoder extension, pressing the middle button.
The Picoclick makes use of the native USB/JTAG-console of the ESP32-C3 and therefore doesn't need a USB2Serial adapter like a CP2102N or CH340. Flashing and working with the serial console/monitor can be done as usual. Furthermore the C3 comes with an optimized latching circuit which enables easy software development with the Arduino framework, because the timing optimization for the latch is deprecated. For the C3T the ESP-IDF was recommended in order to optimize the boot up time.
There are software examples on the documentation page.
All the Picoclicks are assembled, soldered, inspected and tested in my little maker lab by myself here in germany.
Unfortunately, it is not possible for me to provide a complete set with a fitting tiny LiPo battery included. If you're looking for a good one, then make sure it is a 301010 or a 401010 one. For further battery informations, please check the documentation/Github.
The video shows the journey of the Picoclicks as well as the assembly of the C3 and what it can be used for.
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Kenneth | March 8, 2023
Alfonso | March 5, 2023
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