The ANAVI Dev Mic is a small, open-source microphone kit designed for hobbyists and developers. It’s easy to assemble on your own, even with minimal tools. While you can complete the assembly using just your hands, a screwdriver will make the process quicker.
Components
When you open the ANAVI Dev Mic kit, you’ll find the following parts:
Black PCB with gold plating and white markings
Acrylic top cover
Acrylic bottom cover
Four 10 mm screws (M2.5)
Eight M2.5 nuts
NOTE: The kit does not include a USB-C cable. You can use one you already have or buy one separately.
Step 1: Remove Protective Layer
The acrylic covers are laser-cut and come with a protective film on both sides. Carefully peel off this film to reveal the clear acrylic.
Step 2: Attach the Top Cover
Take the PCB and the top acrylic cover, which has a circular cutout for the microphone. Align the cover with the corresponding circle on the PCB. Insert a screw into each of the four mounting holes and secure them with the nuts provided.
Step 3: Install the Bottom Cover
Next, place the bottom acrylic cover over the side of the PCB where the XIAO RP2040 module is located. Secure the cover by tightening it with the remaining four nuts.
Step 4: Connect and Use
With these simple steps completed, your microphone is ready to go. Just plug ANAVI Dev Mic into your computer using a USB-C cable, and you’re good to go!
This YouTube video demonstrates do-it-yourself (DIY) holiday lights to celebrate Christmas or Halloween using ANAVI Miracle Controller, Olimex WS2811 LED ropes and the popular open source home automation platform Home Assistant!
ANAVI Miracle Controller and Olimex LED-Ropes-10 managed from Home Assistant app for Android
All kits of ANAVI Miracle Controller come with WS2812B LED strip, however the board is also compatible with other addressable LED strips. In a previous update we covered Adafruit NeoPixels and now we are focussed on Olimex WS2811 LED Rope.
ANAVI Miracle Controller with mini OLED display and a couple of Olimex LED-ROPE-10
Raspberry Pi (recommended 3 or newer) with Home Assistant
Olimex is a well-known company in the maker community and I am lucky because their headquarter is my hometown Plovdiv, Bulgaria.
Olimex offers addressable, water proof, sealed with resin RGB WS2811 ropes with various number of LEDs. For this video I used a couple of Olimex LED-ROPE-10. The rope is waterproof so it is suitable for both indoor and outdoor installations. It works with power supply in the range from 3.3V to 5.5V and has a dedicated WS2811 driver for each LED.
The typical color code for Olimex LED-ROPE-10:
Olimex rope RED wire – VCC (3.3V-5.5V)
Olimex rope GREEN/BLUE (varies) wire – GND
Olimex rope WHITE wire – DATA
Each RGB LED in Olimex rope draws approximately 50mA at 5V with red, green, and blue at full brightness. Olimex LED-ROPE-10 has only 10 RGB LEDs with makes approximately 500mA and it is OK to power it through ANAVI Miracle Controller. For installation will longer ropes with bigger consumption wire the VCC and GND lines directly to the power supply.
When using Olimex LED ropes, set ANAVI Miracle Controller to 5V input and use an appropriate 5V center positive power supply!
For Olimex LED-Ropes-10 set ANAVI Miracle Controller to 5V and use appropriate 5V power supplyWiring of a couple of Olimex LED-ROPE-10 to ANAVI Miracle Controller
NOTE: The color codes of other addressable LED strips, including WS2812B LED strip from all kits, are different!
Due to differences in color codes this wiring is valid only for Olimex LED ropes. Be careful and check the proper wiring as well input voltage requirements if you are using a different type of addressable LED strip or rope.
Software
Home Assistant must be installed on an appropriate device. If you haven’t installed it already, a single board computer like Raspberry Pi (version 3 or newer) is the perfect fit!
MQTT broker is also required and must be installed. You can install Mosquitto from Home Assistant add-on store. Integrate the MQTT broker in Home Assistant and enable discovery. The exact steps have been covered in a previous blog post about ANAVI Miracle Controller and Adafruit NeoPixels.
After completing the initial installation and integration in Home Assistant, you can easily control the holiday lights from your personal computer, smartphone or tablet. You can either install the official mobile app on your smartphone or use the web interface from any modern HTML5 web browser (Google Chrome, Mozilla Firefox, etc). Furthermore, with Home Assistant you can create automation and trigger automatically the holiday lights depending on various events.
