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loribennms last won the day on June 5

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  1. hi all, i have set a challenge to wind my own coils to repair the growing number of sick magnetos i have and non running engines . i purchased an old machine made by v.p engineering a division of halsten engineering of balgowlah nsw. its a eclipse e59 coil winder and was purchased new in oct 1983. my search show the named company closed permanently and im in hope that someone may have some knowledge of there machines and or written info such as operating manuals, thats a long shot i know. there are no additional gears supplied and no motor but that maybe easily enough sorted out. i have a sewing machine clutch motor and may use a vfd as well but i am also learning about them currently. then i start the winding education i hope wont be to difficult. any info will be great. thanks in advance for any help
  2. I have a simple wifi question. I have an outdoor IP security camera and it is connected to one of my WiFi access points for ease of use and convenience. It is working well except that the wifi link is not optimum. It gets disconnected sometimes although this wasn't a problem before but it is now and I don't know why the link deteriorated. Anyways, I want to improve this link by using a directional wifi antenna. So, is it just a matter of getting a directional yagi like antenna with a good gain--instead of the regular omni-directional one -- and point it toward the access point and be done with it? Or is it more involved?
  3. Hello all. I am trying to use Pixy2 with the Portenta H7 Lite, and the camera is working fine on the main core M7 (for example “getBlocks()”). However, when I switched its use to the secondary core M4, everything compiled with no issues, but at run time, as soon pixy.init() gets activated, just no response from the camera. However, during this time, PixyMon still shows that the camera is working normally. Has anyone tried this use configuration? Thank you for any pointers.
  4. Hello, I recently came across the E73-2G4M08S1EX wireless Bluetooth modules, which boast compact size and low power consumption. These modules utilize the nRF52833 RFIC from NORDIC, supporting a wide range of wireless protocols including Bluetooth 5.1, Bluetooth mesh, 802.15.4, Thread, Zigbee, and proprietary 2.4 GHz protocols. The chip itself features a powerful ARM CORTEX-M4 core, employs a 32M industrial-grade crystal oscillator, and offers various peripheral resources such as UART, I2C, SPI, ADC, DMA, and PWM. The module also exposes most of the nRF52833's IO Ports for versatile development, as outlined in the pin definitions. It's important to note that the E73-2G4M08S1EX serves as a hardware platform without pre-loaded firmware. Users are required to undertake a secondary development. The nRF52833 chip's characteristics are detailed in the official Datasheet. The module optimally leverages the RF capabilities of the chip. Please refer to the provided image for a visual representation of the module. Additionally, the E73-2G4M08S1EX features an embedded ARM MCU. However, other serial ports such as JTAG, ISP, and ICP are not available for downloading purposes. When it comes to firmware burning, the process should be completed in two parts. Since the protocol stack provided by NORDIC is not included in the program, during the second phase of development, you'll need to use the official burning tool, nRFgo Studio, to burn the protocol stack. Subsequently, nRFgo Studio can be used to burn the hex of the application code. Alternatively, you can also opt to use nRFgo Studio to burn the protocol stack and then proceed to download it using IAR or KEIL. The E73-2G4M08S1EX modules find applications in various domains such as smart homes and industrial sensors, security systems, positioning systems, wireless remote controls, drones, wireless game remote controls, healthcare products, and even automotive industry applications.
  5. The FET3588-C System on Module (SoM) is powered by Rockchip's advanced hybrid processor, the RK3588, which combines quad-core Cortex-A76 and Cortex-A55 cores. The A76 core can reach speeds of up to 2.4GHz, while the A55 core can clock up to 1.8GHz. This processor boasts a super advanced engine that can handle 8K output and support quad-screen displays with different content outputs. One of the standout features of the Rockchip RK3588 is its 8K video codec capability, enabling support for various video codec formats. The ISP3.0 can handle impressive 48MP image processing, and the SoM offers various video outputs at up to 8K resolution with a refresh rate of 60Hz. In terms of connectivity, the FET3588-C SoM offers 4 PCIe3.0 and 3 PCIe2.1 interfaces, capable of achieving speeds of up to 8Gbps. Additionally, it comes with multiple USB3.1 Type-C ports, which can also support SATA3.1 for fast data transfer. The SoM has undergone rigorous ambient temperature testing, ensuring its reliability and suitability for high-end applications and products. If you are seeking a trustworthy and high-performance option for your advanced projects, the FET3588-C System on Module with Rockchip's RK3588 processor could be an ideal choice. (Note: The provided image file name suggests an image associated with the mentioned features, but the image itself is not displayed in this text-based response.)
  6. If you're looking for someone to work with you on the project, you may consider reaching out to colleagues, friends, or professional writers who have expertise in the subject matter. You can also use online platforms to find freelance writers who can collaborate with you on your project and ensure it meets your deadlines and quality expectations.
  7. Wow, your teammate's open hardware project sounds fascinating and environmentally impactful! Creating a bee hotel for native bees and integrating it with advanced technology like the Particle Argon, solar panels, and PIR sensors is such a great initiative. The solar cells choice, using IXYS KXOB25 series, is impressive considering their reflowability and parallel connection to maximize power output. And the LTC3105EDD 15 energy harvesting IC with its 250mV startup voltage seems like a promising choice to ensure power availability even during challenging conditions like dawn, dusk, or cloud cover. The integration of PIR sensors along the bee tubes to gather bee traffic data and build a country-wide bee traffic map is a brilliant idea. By using infrared transmitters and receivers, the team can determine the direction in which bees are going (in or out of the tube). The efficient power management through low-side MOSFET and PWM techniques is commendable, as it will help conserve energy and extend the device's lifespan. The future steps sound exciting as well, with the team planning to run a small tflite model on the Particle hardware to identify the type of bee based on a short audio sample. Moreover, sending this data to a central server hosted by Particle for analysis and monitoring adds another layer of sophistication to the project. Regarding the unknowns, the team's idea to use Edge Impulse for the tflite model and Particle cloud for central server hosting sounds promising. While there might be some uncertainties, the forums and the community can provide valuable insights and support. Overall, this project has immense potential to contribute to our understanding of native bees' behavior and play a significant role in supporting pollinator conservation efforts. I'm looking forward to seeing the progress and results of this fantastic initiative! If there are any updates or further developments on the project, please keep us posted. And if anyone else has experience with similar projects or expertise in setting up Particle cloud for a large number of provisioned devices, your input would be highly appreciated. Let's support this endeavor and contribute to the conservation of our precious pollinators!
  8. Hi, I am about to take my journeyman certification test here in California and eventually would like to start my own business. I am aware that in California, you need 4 years of journey-level experience. I have an associates in Electrical Construction and Maintenance which the CSLB said they would give me 1.5 years of experience. Plus I currently have 1.5 years of "journey level experience," as the CSLB requires. So just about a year left!!! My question is in regard to estimating software. I know this is premature for my situation but I wanted to know what EC's out there use for software and approximate prices. In school, we used ConEst software, which seemed pretty easy to navigate and I believe it updated itself for current material pricing. So what do you guys use? thanks for any help
  9. The power supply design utilizes an RM8 ferrite core transformer, which is different from the more commonly used EE or EI cores. You have included a small potentiometer to adjust the output voltage within the range of 7.5V to 8V. For the schematic and PCB design, you used Altium Designer 23 and collaborated with friends using Altium-365 for feedback and updates. Octopart helped you quickly obtain component information and generate the Bill of Materials (BOM). To ensure high-quality fabrication, you sent the Gerber files to PCBWay. You have tested the power supply for voltage drop, current delivery, output noise, and load step response using various equipment such as a DC load, oscilloscope, multimeter, and current probe from Siglent. Based on your tests, you are confident that this circuit will meet the requirements for a compact and efficient power supply, providing reliable performance on an electronics bench. Please note that I'm unable to view the actual article or video you mentioned, but I've provided a summary based on the information you provided.
  10. Please help My Coleman ac unit compressor keeps shutting off after about 4 hours and blows hot air. The outside temp has been in the mid 90's. This has been one of my biggest concerns when leaving my dogs alone while I am at work and this nightmare happened fortunately while I was home otherwise my dogs would have perished. I am looking for suggestions for a portable ac unit or evap cooler to use instead of the Coleman ac unit so I don't have to worry about the pups when I am at work. thanks for any help
  11. Building an analog circuit to connect your sound detector board directly to a speaker can be a fun project. Here are some general steps to help you get started: Understand the Sound Detector Board: Take some time to study the datasheet and documentation of the Sound Detector board you have. This will provide valuable information about its pinout, voltage requirements, and signal outputs. Determine Speaker Requirements: Identify the specifications of the speaker you plan to use, such as impedance (measured in ohms) and power rating (measured in watts). This information will be crucial in designing the analog circuit. Design an Amplifier Circuit: To amplify the audio signal from the sound detector board and drive the speaker, you'll need to design an amplifier circuit. Depending on the power requirements and complexity of your project, you can choose from various amplifier configurations, such as a basic transistor amplifier or an op-amp-based amplifier. You can find amplifier circuit schematics and tutorials online or consult electronics resources. Connect the Sound Detector Board: Connect the analog output of your sound detector board to the input of the amplifier circuit. Ensure that the voltage levels and impedance are properly matched between the two components. Connect the Speaker: Connect the output of the amplifier circuit to the speaker. Take care to connect the positive and negative terminals correctly to avoid phase cancellation or distortion. Test and Troubleshoot: Power up the circuit and test the audio output. Adjust the volume and gain settings as needed. If you encounter any issues, double-check the connections, component values, and polarity. Remember, working with electronics involves certain risks, such as electrical shock or damage to components. Take appropriate safety precautions and ensure that you have a good understanding of basic electronics principles. If you're new to electronics, it may be helpful to consult an experienced hobbyist, join online forums, or consider seeking guidance from a local electronics club or community. Please note that while I can provide general guidance, it's always recommended to consult specific resources and seek expert advice when working on electronics projects.
  12. Your hard work is commendable. When it comes to achieving a fading effect, I typically rely on Arduino or AVR microcontrollers. Utilizing the PWM pins of an Arduino makes the process quite straightforward. However, creating a project of this scale, compactness, and functionality without any programming requires exceptional skills. You've done an impressive job.
  13. Your project idea of creating a PCB with multiple USB-C inputs and outputs to visually confirm if a tablet or laptop is properly connected sounds interesting. To determine if a device is connected to the USB-C cable, you can use a combination of voltage sensing and communication protocols. Here are a few suggestions: Voltage Sensing: As you mentioned, you can use an Arduino to monitor the voltage drop across the USB-C pins when a device is connected. The USB-C connector uses specific voltage levels, such as 5V or 20V, for charging or data transfer. By measuring the voltage levels, you can determine if a device is properly connected or not. However, it's essential to refer to the USB-C specification and understand the specific pin assignments and voltage levels for your project. USB PD (Power Delivery) Protocol: USB PD is a communication protocol used in USB-C connections to negotiate power requirements and capabilities between devices. By utilizing USB PD communication, you can establish a handshake with the connected device and receive confirmation signals or information about the power status. This method provides more reliable and accurate detection of device connection. USB Data Communication: Another approach is to establish a basic USB data communication link with the connected device. You can use the Arduino or a microcontroller to send and receive data over USB to confirm device connectivity. By implementing a simple communication protocol, you can exchange signals or information that indicate the successful connection of the device. Consider combining the above approaches based on your project requirements and the capabilities of the devices you are connecting. It's important to refer to the USB-C specification, study the pin assignments, voltage levels, and communication protocols to ensure compatibility and accurate detection. When designing your PCB, ensure proper isolation and protection circuits to prevent any potential damage to the connected devices. It may be beneficial to consult with an experienced electrical engineer or seek guidance from relevant online communities specialized in USB-C and electronics projects to ensure the best design practices and safety considerations.
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