Not long ago the old JamBox sitting in one of my office display case’s caught my eye.
After picking it up I noticed it used an ESP32 development board, so I had to flash it for ESPHome. I downloaded the PixelOperator8 font and uploaded it to my esphome/fonts folder in Home Assistant. Then I figured out the following YAML to get the buttons, potentiometers (knobs), and LED Matrix working.
# Include your standard api, ota, and wifi sections
esphome:
name: jambox
friendly_name: JamBox
esp32:
board: esp32dev
framework:
type: esp-idf
bluetooth_proxy:
active: true
spi:
clk_pin: GPIO14
mosi_pin: GPIO12
font:
- file: "fonts/PixelOperator8.ttf"
id: pixel_font
size: 8
display:
- platform: max7219digit
id: jambox_display
cs_pin: GPIO15
num_chips: 4
intensity: 1
rotate_chip: 90
lambda: |-
it.print(0, 0, id(pixel_font), "JamBox ");
binary_sensor:
- platform: gpio
name: "Button 1"
pin:
number: GPIO4
mode: INPUT_PULLDOWN
- platform: gpio
name: "Button 2"
pin:
number: GPIO5
mode: INPUT_PULLDOWN
- platform: gpio
name: "Button 3"
pin:
number: GPIO16
mode: INPUT_PULLDOWN
- platform: gpio
name: "Button 4"
pin:
number: GPIO17
mode: INPUT_PULLDOWN
- platform: gpio
name: "Button 5"
pin:
number: GPIO18
mode: INPUT_PULLDOWN
- platform: gpio
name: "Button 6"
pin:
number: GPIO19
mode: INPUT_PULLDOWN
- platform: gpio
name: "Button 7"
pin:
number: GPIO21
mode: INPUT_PULLDOWN
- platform: gpio
name: "Button 8"
pin:
number: GPIO23
mode: INPUT_PULLDOWN
sensor:
- platform: adc
name: "Knob 1"
pin: GPIO32
update_interval: 100ms
attenuation: auto
unit_of_measurement: "%"
accuracy_decimals: 0
filters: &knob_filters
- calibrate_linear:
- 0.15 -> 0.0
- 3.13 -> 100.0
- clamp:
min_value: 0.0
max_value: 100.0
- round: 0
- delta: 1.0
- platform: adc
name: "Knob 2"
pin: GPIO33
update_interval: 100ms
attenuation: auto
unit_of_measurement: "%"
accuracy_decimals: 0
filters: *knob_filters
- platform: adc
name: "Knob 3"
pin: GPIO34
update_interval: 100ms
attenuation: auto
unit_of_measurement: "%"
accuracy_decimals: 0
filters: *knob_filters
- platform: adc
name: "Knob 4"
pin: GPIO35
update_interval: 100ms
attenuation: auto
unit_of_measurement: "%"
accuracy_decimals: 0
filters: *knob_filters
- platform: adc
name: "Knob 5"
pin: GPIO36
update_interval: 100ms
attenuation: auto
unit_of_measurement: "%"
accuracy_decimals: 0
filters: *knob_filters
After installing the YAML and installing the device to Home Assistant, here are the sensors in the device UI.
The device has a ton of inputs with the eight buttons and five knobs and the 8×32 LED Matrix can display text or maybe a simple graph. I haven’t thought of a good use for it though. Do you have any ideas?
Nick Momrik 