RCLCPP_INFO(node->get_logger(), "Robot battery voltage : '%f'", msg->data); } int main(int argc, char *argv[]) { rclcpp::init(argc, argv); node = std::make_shared<rclcpp::Node>("battery_sub"); auto sub = node->create_subscription<std_msgs::msg::Float32>("/robot_battery"...
Use resistors to get the output voltage to be about 0.7V at your full range. This will give you the greatest accuracy. I use 10000 & 2200 ohm for a lithium battery. Then, set the attenuation to 0db and read the voltage. Code:Select all ...
#include"rclcpp/rclcpp.hpp"#include"std_msgs/msg/float32.hpp"std::shared_ptr<rclcpp::Node>node=nullptr;voidTopicCallback(conststd_msgs::msg::Float32::SharedPtr msg){RCLCPP_INFO(node->get_logger(),"Robot battery voltage : '%f'",msg->data);}intmain(int argc,char*argv[]){rclcpp::init...
The ESP32-S3 based "T5-4.7 Plus" provides IO14 for reading the battery voltage. In terms of ADC, it is known as ADC2_CH3, and ADC2 is said to be conflicting with wifi operation. Common wisdom on the Internet is to avoid attempting to use...
I'm using the example of ..\bluetooth\esp_hid_device to do some tests. I can use Lightblue APP on Android phone to read the battery level. It's 0x64 always. I can't find the code to change it. Could anyone can tell me after I get the voltage of battery how do I change the ...
“Upper layer” main development board contains ESP32-PICO-D4 SiP, battery connector & charger circuit with LiPo charge status LEDs, Reset & pull-up IO0 buttons, and a green LED on GPIO4. “Lower layer” board has the USB connector and functions as a USB to UART bridge. Size: 17 mm...
"Battery voltage: %d mV", voltage); /* setup PPPoS network parameters */ esp_netif_ppp_set_auth(esp_netifSim, auth_type, CONFIG_EXAMPLE_MODEM_PPP_AUTH_USERNAME, CONFIG_EXAMPLE_MODEM_PPP_AUTH_PASSWORD); void * modem_netif_adapter = esp_modem_netif_setup(dte); esp_modem_netif_set_...
New to the ESP32? You’re in the right place. This guide contains all the information you need to get started with the ESP32. Learn what is an ESP32, how to select an ESP32 board, how to get your first program working, and much more. Here’s what we’ll cover in this guide:...
I assume this would be a common issue for battery powered applications. So I have two questions : 1. Is there a API function specifically for monitoring the esp32s3 3.3v chip input? 2. if not, is there a recommended method to implement voltage monitoring? if not, I'll build the ...
The LoRaWAN Node Status message and the Application Layer / Sensor Status message can be disabled by setting the corresponding interval to zero. Sensor Data Message Payload: see Default Configuration Port: 1 Interval: ~<sleep_interval> / <sleep_interval_long> (depending on battery voltage); see...