Edit esp-espnow_test_transmitter1.yaml
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ESPHome Device Builder
@@ -2,26 +2,51 @@
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# ESP-NOW Test Transmitter
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#:########################################################################################:#
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#
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# Hardware:
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# - ESP32-S3-Zero / ESP32-S3 Super Mini style board
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# DEVICE:
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# ESP32-S3-Zero / ESP32-S3 Super Mini
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#
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# Wiring:
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# - Button between GPIO4 and GND.
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# VERSION:
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# 1.1 - 2026-07-11
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# - Removed duplicate GPIO4 binary sensor declaration.
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# - GPIO4 is now used only as the deep-sleep wake pin.
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# - Added KEEP_AWAKE handling while the wake button remains pressed.
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# - Uses a random press ID rather than flash-backed press counting.
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# - Sends each button press three times for improved reliability.
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# - Configured ESP-NOW to use Wi-Fi channel 5.
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#
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# Behaviour:
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# - Sleeps most of the time.
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# - Button press wakes the ESP32-S3.
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# - Sends ESP-NOW broadcast 3 times.
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# - Goes back to deep sleep.
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# WIRING:
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# GPIO4 ---- momentary button ---- GND
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#
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# OPERATION:
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# - Initial power-up or reset causes one test transmission.
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# - The ESP32 then enters deep sleep.
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# - Pressing the button pulls GPIO4 LOW and wakes the ESP32.
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# - The ESP32 broadcasts the same message three times.
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# - It waits until the button is released and returns to deep sleep.
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#
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# MESSAGE FORMAT:
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# REMOTE_A:BUTTON_1:123456789
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#
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# IMPORTANT:
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# - Set espnow.channel to the same 2.4 GHz Wi-Fi channel used by the receiver.
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# - The receiver must be operating on Wi-Fi channel 5.
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# - This transmitter intentionally has no Wi-Fi, API or OTA configuration.
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# - Future updates will normally be installed by USB.
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#
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#:########################################################################################:#
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substitutions:
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device_name: espnow-test-transmitter
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friendly_name: "ESPNow Test Transmitter"
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device_name: esp-espnow-test-transmitter1
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friendly_name: "ESPNow Test Transmitter 1"
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remote_id: "REMOTE_A"
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button_id: "BUTTON_1"
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espnow_channel: "5"
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wake_pin: "4"
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#:########################################################################################:#
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# ESPHome Core
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#:########################################################################################:#
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esphome:
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name: ${device_name}
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@@ -30,85 +55,180 @@ esphome:
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on_boot:
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priority: -100
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then:
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- logger.log: "Booted. Sending ESP-NOW test packet..."
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- logger.log:
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level: INFO
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format: "ESP-NOW transmitter booted."
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- lambda: |-
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id(press_id) = esp_random();
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char payload_buffer[96];
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snprintf(
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payload_buffer,
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sizeof(payload_buffer),
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"${remote_id}:${button_id}:%lu",
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static_cast<unsigned long>(id(press_id))
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);
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id(transmit_payload) = payload_buffer;
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ESP_LOGI(
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"espnow_tx",
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"Prepared payload: %s",
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id(transmit_payload).c_str()
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);
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- script.execute: send_espnow_press
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- delay: 500ms
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- logger.log: "Going back to deep sleep."
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- script.wait: send_espnow_press
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- logger.log:
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level: INFO
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format: "Transmission sequence finished. Entering deep sleep."
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- delay: 250ms
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- deep_sleep.enter: deep_sleep_control
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#:########################################################################################:#
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# ESP32 Hardware
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#:########################################################################################:#
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esp32:
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board: esp32-s3-devkitc-1
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variant: esp32s3
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framework:
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type: arduino
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type: esp-idf
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#:########################################################################################:#
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# Logging
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#:########################################################################################:#
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#
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# USB serial logging is useful during initial testing.
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# It does consume some power while the device is awake, but awake time is brief.
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#
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logger:
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level: DEBUG
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#:########################################################################################:#
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# No Wi-Fi on transmitter
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# ESP-NOW
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#:########################################################################################:#
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#
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# This keeps the transmitter fast and battery-friendly.
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# Upload over USB for this test.
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# The transmitter is not joining Wi-Fi, so the ESP-NOW radio channel must be
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# configured explicitly.
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#
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#:########################################################################################:#
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# ESP-NOW Transmit
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#:########################################################################################:#
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espnow:
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channel: 6
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channel: ${espnow_channel}
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#:########################################################################################:#
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# Globals
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#:########################################################################################:#
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globals:
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- id: press_id
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type: uint32_t
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restore_value: false
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initial_value: '0'
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- id: transmit_payload
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type: std::string
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restore_value: false
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initial_value: '""'
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#:########################################################################################:#
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# ESP-NOW Transmission Script
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#:########################################################################################:#
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script:
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- id: send_espnow_press
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mode: single
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then:
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- lambda: |-
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id(press_count) += 1;
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- logger.log:
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level: INFO
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format: "Sending ESP-NOW broadcast 1 of 3."
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- espnow.broadcast:
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data: !lambda |-
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std::string msg = "REMOTE_A:BUTTON_1:" + to_string(id(press_count));
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return std::vector<uint8_t>(msg.begin(), msg.end());
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return std::vector<uint8_t>(
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id(transmit_payload).begin(),
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id(transmit_payload).end()
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);
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wait_for_sent: true
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continue_on_error: true
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on_sent:
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- logger.log:
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level: DEBUG
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format: "Broadcast 1 sent."
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on_error:
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- logger.log:
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level: WARN
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format: "Broadcast 1 reported an error."
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- delay: 50ms
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- logger.log:
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level: INFO
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format: "Sending ESP-NOW broadcast 2 of 3."
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- espnow.broadcast:
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data: !lambda |-
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std::string msg = "REMOTE_A:BUTTON_1:" + to_string(id(press_count));
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return std::vector<uint8_t>(msg.begin(), msg.end());
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return std::vector<uint8_t>(
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id(transmit_payload).begin(),
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id(transmit_payload).end()
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);
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wait_for_sent: true
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continue_on_error: true
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on_sent:
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- logger.log:
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level: DEBUG
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format: "Broadcast 2 sent."
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on_error:
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- logger.log:
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level: WARN
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format: "Broadcast 2 reported an error."
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- delay: 50ms
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- logger.log:
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level: INFO
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format: "Sending ESP-NOW broadcast 3 of 3."
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- espnow.broadcast:
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data: !lambda |-
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std::string msg = "REMOTE_A:BUTTON_1:" + to_string(id(press_count));
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return std::vector<uint8_t>(msg.begin(), msg.end());
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globals:
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- id: press_count
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type: int
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restore_value: true
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initial_value: '0'
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return std::vector<uint8_t>(
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id(transmit_payload).begin(),
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id(transmit_payload).end()
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);
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wait_for_sent: true
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continue_on_error: true
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on_sent:
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- logger.log:
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level: DEBUG
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format: "Broadcast 3 sent."
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on_error:
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- logger.log:
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level: WARN
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format: "Broadcast 3 reported an error."
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#:########################################################################################:#
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# Wake Button and Deep Sleep
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# Deep Sleep and Wake Button
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#:########################################################################################:#
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binary_sensor:
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- platform: gpio
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id: wake_button
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name: "Wake Button"
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internal: true
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pin:
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number: GPIO4
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mode: INPUT_PULLUP
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inverted: true
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#
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# GPIO4 is pulled HIGH internally.
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# Pressing the button connects GPIO4 to GND and wakes the ESP32.
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#
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# KEEP_AWAKE prevents an immediate sleep/wake loop if the button is still held
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# when the transmission sequence finishes.
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#
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deep_sleep:
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id: deep_sleep_control
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wakeup_pin:
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number: GPIO4
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mode: INPUT_PULLUP
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number: GPIO${wake_pin}
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mode:
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input: true
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pullup: true
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inverted: true
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sleep_duration: 365d
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wakeup_pin_mode: KEEP_AWAKE
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