#EmbeddedHardware

[adafruit]

TLV320DAC3100 first bops 🔊🎶💃🕺

OK, after many hours spent with Claude on writing a driver for the TLV320DAC3100 (https://www.digikey.com/en/products/detail/texas-instruments/TLV320DAC3100IRHBR/2260591), we finally have it configured using our driver, and playing an MP3 stream on this ESP32. This I2S DAC has a particularly complex PLL and audio-routing system, so it's not one where you can just pipe in I2S data and have it magically play. One nice thing we got working on is the MCLK, which is generated from the BCLK, so it'll work great with anything from an Arduino-compatible to a single-board computer like Raspberry Pi. We're hoping to get the headphone detection working next so that we can turn off the amp when the headphone is plugged in. Also, it should be able to control the volume from the headset buttons. Also, we want to get the internal beep generator going so we can make tones separate from the audio stream for UI notifications.

[forlinx]

Four Advantages Detailed Analysis of Forlinx Embedded FET3576-C System on Module

In order to fully meet the growing demand in the AIoT market for high-performance, high-computing-power, and low-power main controllers, Forlinx Embedded has recently launched the FET3576-C System on Module, designed based on the Rockchip RK3576 processor. It features excellent image and video processing capabilities, a rich array of interfaces and expansion options, low power consumption, and a wide range of application scenarios. This article delves into the distinctive benefits of the Forlinx Embedded FET3576-C SoM from four key aspects.

Advantages: 6TOPS computing power NPU, enabling AI applications

Forlinx Embedded FET3576-C SoM has a built-in 6TOPS super arithmetic NPU with excellent deep learning processing capability. It supports INT4/ INT8/ INT16/ FP16/ BF16/ TF32 operation. It supports dual-core working together or independently so that it can flexibly allocate computational resources according to the needs when dealing with complex deep learning tasks. It can also maintain high efficiency and stability when dealing with multiple deep-learning tasks.

FET3576-C SoM also supports TensorFlow, Caffe, Tflite, Pytorch, Onnx NN, Android NN and other deep learning frameworks. Developers can easily deploy existing deep learning models to the SoM and conduct rapid development and optimization. This broad compatibility not only lowers the development threshold, but also accelerates the promotion and adoption of deep learning applications.

Advantages: Firewall achieves true hardware resource isolation

The FET3576-C SoM with RK3576 processor supports RK Firewall technology, ensuring hardware resource isolation for access management between host devices, peripherals, and memory areas.

Access Control Policy - RK Firewall allows configuring policies to control which devices or system components access hardware resources. It includes IP address filtering, port control, and specific application access permissions. Combined with the AMP system, it efficiently manages access policies for diverse systems.

Hardware Resource Mapping and Monitoring - RK Firewall maps the hardware resources in the system, including memory areas, I/O devices, and network interfaces. By monitoring access to these resources, RK Firewall can track in real-time which devices or components are attempting to access specific resources.

Access Control Decision - When a device or component attempts to access hardware resources, RK Firewall will evaluate the access against predefined access control policies. If the access request complies with the policy requirements, access will be granted; otherwise, it will be denied.

Isolation Enforcement - For hardware resources identified as requiring isolation, RK Firewall will implement isolation measures to ensure that they can only be accessed by authorized devices or components.

In summary, RK Firewall achieves effective isolation and management of hardware resources by setting access control policies, monitoring hardware resource access, performing permission checks, and implementing isolation measures. These measures not only enhance system security but also ensure system stability and reliability.

Advantages: Ultra clear display + AI intelligent repair

With its powerful multimedia processing capability, FET3576-C SoM provides users with excellent visual experience. It supports H.264/H.265 codecs for smooth HD video playback in various scenarios, while offering five display interfaces (HDMI/eDP, MIPI DSI, Parallel, EBC, DP) to ensure compatibility with diverse devices.

FET3576-C SoM notably supports triple-screen display functionality, enabling simultaneous display of different content on three screens, significantly enhancing multitasking efficiency.

In addition, its 4K @ 120Hz ultra-clear display and super-resolution function not only brings excellent picture quality enjoyment, but also intelligently repairs blurred images, improves video frame rate, and brings users a clearer and smoother visual experience.

Advantage: FlexBus new parallel bus interface

FET3576-C of Forlinx Embedded offers a wide range of connectivity and transmission options with its excellent interface design and flexible parallel bus technology. The FlexBus interface on the SoM is particularly noteworthy due to its high flexibility and scalability, allowing it to emulate irregular or standard protocols to accommodate a variety of complex communication needs.

FlexBus supports parallel transmission of 2/4/8/16bits of data, enabling a significant increase in the data transfer rate, while the clock frequency of up to 100MHz further ensures the high efficiency and stability of data transmission.

In addition to the FlexBus interface, the FET3576-C SoM integrates a variety of bus transfer interfaces, including DSMC, CAN-FD, PCIe2.1, SATA3.0, USB3.2, SAI, I2C, I3C and UART. These interfaces not only enriches the SoM's application scenarios but also enhances its compatibility with other devices and systems.

It is easy to see that with the excellent advantages of high computing power NPU, RK Firewall, powerful multimedia processing capability and FlexBus interface, Forlinx Embedded FET3576-C SoM will become a strong player in the field of embedded hardware. Whether you are developing edge AI applications or in pursuit of high-performance, high-quality hardware devices, the Folinx Embedded FET3576-C SoM is an unmissable choice for you.

Originally published at www.forlinx.net.

[electronicconference]

Embedded Design

Embedded design refers to the process of creating and implementing hardware and software solutions for embedded systems. Embedded systems are specialized computing systems integrated into devices or machinery to control specific functions or processes

More information: electronicmaterialsconference.com

For Enquiry: contact@electronicmaterialsconference.com Nomination Link :https://x-i.me/emcnom Get Connected Here: ================== Facebook : https://www.facebook.com/profile.php?id=61556074815651 Twitter : https://twitter.com/PencisE28647 Pinterest : https://in.pinterest.com/electronicconference/

[oxymoratechnology]

Alphabets on LED Display || OxYmora Technology

[jingguanyingpcb]

FPC samples photo👀 Free quote:lilian@teleconix.com . . #pcb #pcbdesign #flexpcb #factory #pcba #maker #led #lcd #touchpanel #display #touchscreen #kiosk #cameralens #electronics #consumerelectronics #iot#embeddedsystems #embeddedhardware https://www.instagram.com/p/CD_SgLDnqG9/?igshid=8iudb69isle0

[adafruit]

TLV320DAC3100 take 2 🎧🔊

After much wrasslin’ with the TLV320DAC3100, we finally have a library that properly configures the PLL and sets up both the headphone and speaker output well enough. However, we made a mistake with the headphone wiring, accidentally swapping ground and mic, and we’re experiencing some noise in the headphones when the Class D speaker output is active.

We’re rerouting the board to separate the speaker outputs from the TRRS jack to address this. While at it, we’re also exposing the MICDET and bias pins—interestingly, the mic detects can double as a potentiometer input for volume control. The board grew by 50 mils, but we believe this version is the one. After testing, it should be ready for sale.

We’re excited to get this board dialed in since we plan to use this chip in several designs!

[adafruit]

Desk of Ladyada - Tariff Talk! ASK AWAY! 📦🌎💸

We're doing the show tonight or Tues, so much is going on. Lots more questions came in too! Post yours before we go live…

This week was not a big week for engineering because we're neck-deep in tariff management! We had a video on Wednesday about the first round of tariffs announced—they have since been ratcheted up to 20% + 125% = 145% minimum on products from China and Hong Kong. "Retaliatory" tariffs on products from other countries have been paused, but there's still a 10% global tariff.

Then on Friday, it looks like some HTS codes

were "exempted" temporarily

Let's take a look at the CBP (link) and the exempt tariff codes

and see how they might apply to the kinds of stuff we use to do our electronics engineering.

The Great Search - How to Source Tariffed & Non-Tariffed Items on DigiKey

https://www.digikey.com/short/2nb7nzb3

Since this is the topic of the day, we'll be looking at how to purchase an item from DigiKey with tariffs in mind. DigiKey is a free trade zone, which means that if you're not in the USA, you will not have to pay additional tariffs on goods that are re-exported. However, for USA destinations, the new tariffs can add a significant cost if the component has its last manufacturing step in China.

Let's use the example of a simple I2C-controlled temperature sensor to see how our sourcing decisions may be impacted by tariffs.

[adafruit]

Prototype of a Compute Module backpack ready! ⚡🎒

OK, our 10164227-1004A1RLF (https://www.digikey.com/short/3z8mb49f) Compute Module connectors came in, so we're ready to fab this prototype of our Compute Module 4 or 5 backpack. Timon updated it to have an EYESPI connector to bring out some GPIO's and make it easy to connect small displays. There's so much packed on here; we're worried about how we're going to make a test jig for so many connectors! We may need to use an IO multiplexer to address so many pins with a microcontroller - while using a CM5 to do the test sounds 'fun,' it would not be good to have such a delicate board used for testing hundreds or thousands of these in the fabrication department.

[adafruit]

TPS65131 split boost converter revision ✅🔧

We designed this split +12/-12 power supply board based on the TPS65131 (https://www.digikey.com/en/products/detail/texas-instruments/TPS65131RGER/1672464) a few months ago, but it languished while we worked on some other projects. We had an issue where the negative power rail was unstable. Thankfully, we found a thread that suggested slowing down the VNEG feedback loop (https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/628380/tps65131-q1-abnormal-operation-of-tps65131-q1-s-vneg) with a 51k resistor. We hand-soldered that in, and it worked nicely. Then, the other fix was to flip around the trimmers so the turn direction matched the expected behavior. This should be good to book a second prototype, and then it can go into the shop.

[adafruit]

The Great Search - How to Source Tariffed & Non-Tariffed Items on DigiKey 📦🌎💸 https://youtu.be/I-eD6FSM0bU

[adafruit]

We stock and use a couple of different I2C ADCs, such as the NAU7802

and the HX711

Both of these are kinda designed specifically for load cells. This is a more general-purpose 24-bit ADC using the ADS122C04

with adjustable 1x to 128x gain, up to 2ksps and an internal reference. It can be single or differential input. Good for sensitive things like RTDs, thermocouples, or resistive bridges like load cells! Coming soon.

[adafruit]

Desk of Ladyada - an audio extravaganza 🎧🔧🎤

New audio designs are in the pipeline, including work with TDK’s T5838 PDM mic and PCM1840/PCM1820 chips. Great Search is on for a low-cost, MCK-less I2S DAC to replace the discontinued UDA1334A, like the popular PCM5102A.

[adafruit]

Desk of Ladyada – Marchintosh on Fruit Jam 🍎💾

Ladyada tests final TLV320DAC3100 boards for Fruit Jam, revises the PCB, and explores Jepler’s pico-mac. Also designs a USB-C CC resistor fix board. For the next rev, she hunts an 8-ohm PCB-mount speaker under 0.8" for onboard beeps.

[adafruit]

Desk of Ladyada - LDACs, Sparkle Motion Mini & Claude 🔧🤖 https://youtu.be/bFcRxufkZjI

Sparkle Motion Mini PCBs are here, featuring a compact 5V-only design. We are also refining small breakout boards like the DAC7578 and working on a TMC2209 driver by refactoring BusIO for versatile interfaces. Lastly, Claude & exploring compact, sensorless BLDC motor drivers via DigiKey.

[adafruit]

BQ25185 all-in-one Li-Poly board with 3.3V out 🔋🌞⚡

We had a previous version of this 3.3V buck output board with an MCP73831, but now we've replaced it with a BQ25185, which makes it a little more flexible: Vin can be up to 18V, and solar panels will work, too. There's also a power path and 4.5V regulated output. This charger chip can handle LiFePO4, but for that chip, we might swap the buck for a buck-boost or a boost / LDO to get the solid 3.3V output. Coming soon.