Building a Compact Digital TV Transmitter with Raspberry Pi Zero, Pi Camera, and LimeSDR Mini USB SDR Board

There are few affordable standalone systems that allow you to transmit video over the air, and back in 2016, I had the chance to check out V-Bridge Muses-β MPEG-2/-4 encoder and DTV modular taking HDMI or composite video input. It was easy to use and worked fine, but it would still cost close to $600, and might have been a little smaller. Evariste Okcestbon has now created its own digital TV transmitter prototype, combining LimeSDR Mini USB SDR board with Raspberry Pi Zero board, and instead of supporting external input from HDMI or AV ports, he used an official Pi camera for video, and was able to transmit the video over a 1.2 GHz connection to a Raspberry Pi 2 with an RTL-SDR dongle, with the Pi 2 board also taking care of displaying the video signal.   The full flow of transmission can be summarized as follows: Video from […]

Mecool KII Pro Set-Top-Box Upgraded to Amlogic S905D Processor, Android 7.1.2

VideoStrong is making some of the most popular – at least on this website – Android set-box boxes with digital TV tuner on the market with products like Mecool KIII Pro, or KI Pro, mostly because of their affordability. Software may be hit or miss depending on your local requirement (e.g. AC3 on DVB-T2, language encoding issues, etc..), so there’s fairly large number of users and some community tools or firmware such as DVB Channel Editor or Vitmos OS that may make them better devices. Most models are based on Amlogic S905 or S912, but Amlogic launched S905D processor some time ago with better tuner support (multiple demodulator support) which for example allowing me to watch terrestrial TV (DVB-T2) while recording satellite TV (DVB-S2) on Sen5 TV box. VideoStrong decided to upgrade their KII Pro Android set-top box  with S905 processor, DVB-T2/T/C and DVB-S2/S tuners to the new Amlogic S905D […]

Dune HD Unveils 5 Entry Level to Premium 4K HDR Linux + Android Media Players & Set-Top Boxes

Dune HD is known to make high-end digital media players that often costs several hundred dollars such as Sigma Designs based Dune HD SOLO 4K or Dune HD Solo Lite. The company has now sent out an email announcing new models classified into three categories with most models based on Amlogic processors: Neo Series – Entry level Dune HD Neo 4K – 4Kp60 HDR media player + Android Smart TV box Amlogic S905X 1GB RAM, 8GB flash 802.11ac Wi-Fi, 100Mbit Ethernet, Bluetooth Dune HD Neo 4K T2 – 4Kp60 HDR media player + Android Smart TV box + DVB-T/T2/C receiver Amlogic S905D 1GB RAM, 8GB flash 802.11ac Wi-Fi, 100Mbit Ethernet, Bluetooth Dune HD Neo 4K T2 Plus – 4Kp60 HDR media player + Android Smart TV box + DVB-T/T2/C receiver Amlogic S905D 2GB RAM, 16GB flash 802.11ac Wi-Fi, 100Mbit Ethernet, Bluetooth Sky series – Models with satellite receiver Dune HD […]

How to Use Khadas VIM2 Board with VTV Expansion DTV Board as a Live TV Streaming Server

Khadas-VIM2-Heatsink

Khadas VIM2 is the first and only Amlogic S912 based hobbyist development board on the market, which makes it interesting by itself, but the company also added some interesting features such as an SPI flash for network boot, Wake-on-LAN support, and more. Last month the company sent me a sample of the Khadas VIM2 Basic (2GB RAM/16GB flash) together with VTV Extension DTV Board featuring a DVB-T2/C and DVB-S2 tuner. I’ve already checkout the hardware and shown how to assemble the kit, so for the second part of the review it seemed like a good idea to use the board as a Live TV streaming server broadcasting satellite, cable or terrestrial TV to devices connected to the local network. At first I wanted to use Linux operating system, because I could have run other Linux server services, but SuperDVB, the company that makes and supports the tuner board, only have […]

Magicsee C300 is a $70 DVB-T2/C & DVB-S2 Android Set-Top Box Powered by Amlogic S905D SoC

Amlogic S905D processor is an evolution of Amlogic S905X with Gigabit Ethernet support, and TS interfaces for digital TV tuners. That explains why most devices launched with the processor come with tuners. So far, we’ve covered or reviewed a few including Sen5 STB (2x DVB-T2/C), Mecool KI Pro (T2/S2), and TX95D TV box with a single DVB-T2 tuner. Magicsee C300 is another Amlogic S905D Android STB that comes with DVB-T2/C (Terrestrial & Cable), and DVB-S2 (Satellite) tuners, and sells for just under $70 on Aliexpress, and can be found on other shops such as GearBest. Magicsee C300 specifications are quite similar to the ones for Mecool KI Pro: SoC –  Amlogic S905D quad core ARM Cortex-A53 @ up to 1.5 GHz with penta core Mali-450MP GPU System Memory – 2 GB DDR3 Storage – 16GB eMMC flash + micro SD card slot up to 32GB Video Output – HDMI 2.0a […]

Khadas VIM2 Board Review – Part 1: Unboxing and Dual Tuner Board

Khadas VIM2 board is the successor of Khadas VIM board, replacing Amlogic S905X by a slightly more powerful Amlogic S912, but that’s the connectivity features that really makes it stand apart from the first version with Gigabit Ethernet, 802.11ac WiFi and Bluetooth 4.2. It also exposes a few extra I/Os via pogopins. and among the three variants, two comes with 3GB RAM, and up to 64 GB storage. The company (Shenzhen Wesion) sent me one of the boards, together with various accessories, and I’ll start the review of the board by checking out the hardware and accessories, before testing the board further in another post. I received two packages: one book-like with Khadas marked on top, and another one with various other items. The first package includes the board, a USB to USB type C cable, and a card showing the main specifications, and supported operating systems: Ubuntu 16.04, Android […]

PingPong IoT Development Board Supports Cellular Connectivity, WiFi, Bluetooth, LoRa, Sigfox, and More

Round Solutions, a supplier of products, services and concepts for industrial M2M and IoT markets, has introduced PingPong IoT development board with either Microchip PIC32MZ running an RTOS, or PIC32MZ DA running Linux, and equipped with a Telit modules for either 2G or 3G cellular + GNSS connectivity. The board can also support WiFi, Bluetooth, ISM/RF, NFC/RFID, LoRa, Sigfox, Iridium satellite, and serial interface thanks to a range of expansion boards. PingPong IoT board specifications: MCU / Flash RTOS version – Microchip PIC32MZ 32-bit Microcontroller @ 200 MHz, with 512 KB RAM and 2 MB Flash Memory + 4 MB external memory Linux version – Microchip PIC32MZ DA  (Full specs TBA) Connectivity Cellular connectivity Telit xE910 module with 2G, 3G and/or 4G LTE (coming soon) Data GSM/GPRS – Uplink/Downlink: 9.6 kbps UMTS – Downlink: 384 kbps, Uplink: 384 kbps HSPA+ – Downlink: 42.0 Mbps, Uplink: 5.75 Mbps LTE – Download: 100 […]

Sen5 Amlogic S905D TV Box Review – Part 2: Android Firmware, Kodi 17, and DVB-T2 & S2 App

Sen5 is one of the first Android TV boxes powered by Amlogic S905D processor, and comes with two tuners (DVB-C/T/T2 and DVB-T/T2) with two demodulators that should allow for recording on one tuner, while watching the other, or recording two channels at the same time. We’ve already check out the hardware in the first part of the review, and seen a glimpse of the neat user interface, so today I’ll report about my experience with the device. Sen5 Android Set-Top Box First Boot, Setup Wizard, & First Impressions The STB comes with two USB ports so I used one for the hard drive, a necessity if you plan to use the PVR function, and connected a USB hub to the other with RF dongles for an air mouse and a gamepad, as well as a USB keyboard to take screenshots. I also connected Ethernet and HDMI cables, as well as […]