# Home-Assistant-Control-pad
This is a programmable Home Assistant Control Pad. It can control 4 Home assistant devices at a time, and has 4 togglable screens/zones (in total 16 devices). It uses buttons and rotary encoders to enable and control other HASS devices. It also has an OLED Display (1.33") to display the status of the devices. It is battery powered, it contains a 1800mAh Li-Po. The device uses an ESP32-S2 and ESPHome.
## Why I made it?
I made this project as I wanted an easy and fast way to control the "smart" devices I have made. I'm making quite a few ESPHome devices and wanted something to control most of them easily.
## Features
- Controls Home Assistant entities (lights, switches, etc.)
- Over-the-air (OTA) updates
## Images
Final Build:
Case
Schematic
PCB
## BOM
| Index | Part Number | What the item is for in your project | Description | Pack Quantity | ID | Unit Price | Total Price | Total |
| ----- | ----------------------------------------- | ------------------------------------------------ | ------------------------------------ | ------------- | --------------------------------------------------------------------------------------- | ---------- | ----------- | ------- |
| 1 | PMEG10010ELRX | Reverse polarity protection | DIODE SCHOTTKY 100V 1A SOD123W | 2 | 1727+AC0-2394+AC0-1+AC0-ND | $0.27 | $0.54 | $133.08 |
| 2 | DFE252012P+AC0-1R0M+AD0-P2 | Inductor for buck+AC0-boost | FIXED IND 1UH 3.2A 0.042OHM SMD | 3 | 490+AC0-10647+AC0-1+AC0-ND | $0.22 | $0.66 |
| 3 | LS R976+AC0-NR+AC0-1+AC0-0+AC0-20+AC0-R18 | Led indication | LED RED DIFFUSED 0805 SMD | 3 | 475+AC0-LSR976+AC0-NR+AC0-1CT+AC0-ND | $0.15 | $0.45 |
| 4 | LG R971+AC0-KN+AC0-1+AC0-0+AC0-20+AC0-R18 | Led indication | LED GREEN DIFFUSED 0805 SMD | 3 | 475+AC0-LGR971+AC0-KN+AC0-1CT+AC0-ND | $0.15 | $0.45 |
| 5 | LTST+AC0-C170KSKT | Led indication | LED YELLOW CLEAR SMD | 3 | 160+AC0-1416+AC0-1+AC0-ND | $0.17 | $0.51 |
| 6 | RMCF0603JT10K0 | Passive | RES 10K OHM 5% 1/10W 0603 | 22 | RMCF0603JT10K0CT+AC0-ND | $0.02 | $0.42 |
| 7 | CRCW06035K11FKEAC | Passive | RES 5.11K OHM 1% 1/10W 0603 | 3 | 541+AC0-5491+AC0-1+AC0-ND | $0.10 | $0.30 |
| 8 | RC0402FR+AC0-071KL | Passive | RES 1K OHM 1% 1/16W 0402 | 2 | 311+AC0-1.00KLRCT+AC0-ND | $0.10 | $0.20 |
| 9 | RC0402FR+AC0-07470RL | Passive | RES 470 OHM 1% 1/16W 0402 | 4 | 311+AC0-470LRCT+AC0-ND | $0.10 | $0.40 |
| 10 | RC0603FR+AC0-07511KL | Passive | RES 511K OHM 1% 1/10W 0603 | 2 | 311+AC0-511KHRCT+AC0-ND | $0.10 | $0.20 |
| 11 | RC0603FR+AC0-0791KL | Passive | RES 91K OHM 1% 1/10W 0603 | 3 | 311+AC0-91.0KHRCT+AC0-ND | $0.10 | $0.30 |
| 12 | RC0603FR+AC0-07806KL | Passive | RES 806K OHM 1% 1/10W 0603 | 2 | 311+AC0-806KHRCT+AC0-ND | $0.10 | $0.20 |
| 13 | RC0603FR+AC0-071KL | Passive | RES 1K OHM 1% 1/10W 0603 | 13 | 311+AC0-1.00KHRCT+AC0-ND | $0.01 | $0.12 |
| 14 | RC0603FR+AC0-073K9L | Passive | RES 3.9K OHM 1% 1/10W 0603 | 2 | 311+AC0-3.90KHRCT+AC0-ND | $0.10 | $0.20 |
| 15 | RC0402FR+AC0-071K54L | Passive | RES 1.54K OHM 1% 1/16W 0402 | 2 | YAG3040CT+AC0-ND | $0.10 | $0.20 |
| 16 | RC0402FR+AC0-0769K8L | Passive | RES 69.8K OHM 1% 1/16W 0402 | 2 | YAG3216CT+AC0-ND | $0.10 | $0.20 |
| 17 | PEC11R+AC0-4220F+AC0-S0024 | Rotate action | ROTARY ENCODER MECHANICAL 24PPR | 7 | PEC11R+AC0-4220F+AC0-S0024+AC0-ND | $1.89 | $13.23 |
| 18 | PTS815SJG250SMTR LFS | Esp32 buttons | SWITCH TACTILE SPST+AC0-NO 0.05A 12V | 3 | CKN12217+AC0-1+AC0-ND | $0.28 | $0.84 |
| 19 | TX08F103F3435ER | NTC Thermistor | THERMISTOR 0805 10K/3435 | 2 | 273+AC0-TX08F103F3435ERCT+AC0-ND | $0.12 | $0.24 |
| 20 | ESP32+AC0-S2+AC0-MINI+AC0-2+AC0-N4R2 | MCU | RF TXRX MOD WIFI PCB TRACE SMD | 2 | 1965+AC0-ESP32+AC0-S2+AC0-MINI+AC0-2+AC0-N4R2CT+AC0-ND | $4.31 | $8.62 |
| 21 | MCP73833T+AC0-FCI/MF | Battery charger | IC BATT CONTRL LI+AC0-ION 1CEL 10DFN | 2 | MCP73833T+AC0-FCI/MFCT+AC0-ND | $1.14 | $2.28 |
| 22 | TPS631010YBGR | Buck+AC0-Boost | IC REG BUCK BST ADJ 1.5A 8DSBGA | 3 | 296+AC0-TPS631010YBGRCT+AC0-ND | $1.29 | $3.87 |
| 23 | C0603C103J5REC7411 | Passive | CAP CER SMD 0603 .01UF 5% X7R 50 | 13 | 399+AC0-17568+AC0-1+AC0-ND | $0.10 | $1.33 |
| 24 | C0603C104J5REC7411 | Passive | CAP CER 0603 | 20 | 399+AC0-C0603C104J5REC7411CT+AC0-ND | $0.11 | $2.24 |
| 25 | CL10A105KQ8NNNC | Passive | CAP CER 1UF 6.3V X5R 0603 | 2 | 1276+AC0-1036+AC0-1+AC0-ND | $0.10 | $0.20 |
| 26 | CL10A106KQ8NNNC | Passive | CAP CER 10UF 6.3V X5R 0603 | 13 | 1276+AC0-1038+AC0-1+AC0-ND | $0.03 | $0.39 |
| 27 | CL21A476MQYNNNG | Passive | CAP CER 47UF 6.3V X5R 0805 | 15 | 1276+AC0-6467+AC0-1+AC0-ND | $0.16 | $2.37 |
| 28 | 16347 | Led indication | ADDRESS LED RED/GRN/BLUE | 5 | 1568+AC0-16347CT+AC0-ND | $0.68 | $3.40 |
| 29 | B3F+AC0-4055 | Push Action | SWITCH TACTILE SPST+AC0-NO 0.05A 24V | 10 | SW414+AC0-ND | $0.42 | $4.23 |
| 30 | S2B+AC0-PH+AC0-K+AC0-S | Battery connector | CONN HEADER R/A 2POS 2MM | 2 | 455+AC0-1719+AC0-ND | $0.11 | $0.22 |
| 31 | PCB | PCB | | 1 | https://aisler.net | $42.57 | $42.57 |
| 32 | Battery | Power Source | 103450 1800mAh | 1 | https://www.ebay.es/itm/255510046348 | $15.44 | $15.44 |
| 33 | Display | Displays The UI | I2C display | 1 | https://es.aliexpress.com/item/1005006862867338.html | $2.62 | $2.62 |
| 34 | Rubber Feet | Adds friction to the base so it doesn+IBk-t slip | | 1 | https://es.aliexpress.com/item/1005005275590870.html | $3.11 | $3.11 |
| 35 | ELEGOO PLA filament | Printing case | | 1 | https://www.amazon.es/-/en/Filament-Printer-Dimensional-Accuracy-Printers/dp/B0CD77VHBZ | $20.53 | $20.53 |
## Configuration
Remember to set your secrets in [secrets.yaml](Code/secrets.example.yaml).
All firmware configuration lives in [code.yaml](Code/code.yaml):
PS: This configuration is for reference only, The final configuration will be for the ESP32-S2. You'll also have to configure the devices you want to control in Home Assistant.
```yaml
esphome:
name: controlpad
friendly_name: ControlPad
esp32:
board: esp32-c3-devkitm-1
framework:
type: arduino
# Enable logging
logger:
# Enable Home Assistant API
api:
encryption:
key: !secret api_key
ota:
- platform: esphome
password: !secret ota_password
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "Controlpad Fallback Hotspot"
password: "wHjqyQOLnaPa"
globals:
- id: page_active
type: int
initial_value: "0"
i2c:
sda: GPIO6
scl: GPIO7
frequency: 800kHz
scan: true
binary_sensor:
- platform: gpio
pin:
number: GPIO2
mode: INPUT_PULLUP
inverted: true
name: "Button1"
on_press:
- display.page.show: page1
- lambda: |-
id(page_active) = 1;
- platform: gpio
pin:
number: GPIO4
mode: INPUT_PULLUP
inverted: true
name: "Button2"
on_press:
- display.page.show: page2
- lambda: |-
id(page_active) = 2;
- platform: gpio
pin:
number: GPIO21
mode: INPUT_PULLUP
inverted: true
name: "toggle1"
on_press:
then:
- if:
condition:
lambda: |-
return id(page_active) == 1;
then:
- homeassistant.service:
service: light.toggle
data:
entity_id: light.led_controller_1_light_bar
sensor:
- platform: homeassistant
name: "Bar Light Brightness"
id: led_controller_1_light_bar_brightness
entity_id: light.led_controller_1_light_bar
attribute: brightness
unit_of_measurement: "%"
filters:
- lambda: |-
if (isnan(x)) return 0.0f;
return int(x * 100.0f / 255.0f);
- platform: adc
pin: GPIO3
name: "potentiometer1"
id: potentiometer1
attenuation: 12db # allow 0–3.3 V range
update_interval: 20ms
unit_of_measurement: "%"
filters:
- sliding_window_moving_average:
window_size: 10
send_every: 5
- lambda: |-
if (isnan(x)) return 0.0f;
int pot_val = int(x * 100.0f / 2.9f);
if (pot_val > 100) pot_val = 100;
return pot_val;
- delta: 1.0
on_value:
then:
- if:
condition:
lambda: |-
return id(page_active) == 1;
then:
- homeassistant.service:
service: light.turn_on
data:
entity_id: light.led_controller_1_light_bar
brightness_pct: !lambda "return (int)x;"
# SH1106 128×64 over I2C
display:
- platform: ssd1306_i2c
model: SH1106 128x64
id: display1
address: 0x3C
rotation: 0
update_interval: 100ms
pages:
- id: page1
lambda: |-
int val1 = int((id(led_controller_1_light_bar_brightness).state / 100.0f) * 31);
if (val1 != 0) {
val1 += 1;
}
it.filled_rectangle(10, 64-val1, 5, 33);
// it.printf(0, 0, id(font1), "%.0f%%", id(led_controller_1_light_bar_brightness).state);
- id: page2
lambda: |-
it.print(0, 10, id(font1), "This is page 2!");
it.filled_rectangle(10, 20, 80, 5);
font:
- file: "gfonts://Ubuntu"
id: font1
size: 20
captive_portal:
```