If you want to follow the instructions provided by ThaiEasyElec (in Thai only for now, but easy enough to follow, and an English version is coming), you’ll need a GUI, so I’d recommend you install the full Raspbian Stretch image and connect an HDMI display, although you may run VNC client as well. I’ve been told the battery supploes power to the internal clock engine of the module, which can calculate the new position of satellites and get GPS fix faster from data used up to 3 days ago. The other side of the battery comes the audio codec board based on Nuvoton NAU8814Y mono audio codec, the SIM card slot fitted with a black dummy SIM card, a CR1220 coincell battery for GPS fix backup, and a 40-pin female header used for connection to the Raspberry Pi. They’ve also given access the the 40-pin RPi header using male pins, as a 4-pin UART connector. Looking closer at the board we can see Quectel UC20GB module in the center of the board, the three RP-SMA antenna connectors clearly marked with DIV, GNSS, and MAIN, the micro USB port for power and data, the 3.5mm audio jack, and in the top right connector J3 2-pin header to enable autostart, 3-pin P8 header to select GPIO 17 or GPIO 18 for software on/off, and the power key to manually start or stop the the module. I’ve also been told a 25cm micro USB cable should be included, but it seems they forgot it for my package… Click to Enlarge The GPS antenna comes with a 3-meter cable which should make it suitable to install in most cars or trucks, and the HAT package includes an extra zip bag with spacers, screws, nuts, and a 40-pin female header. I received the kit in a carton box with three zipped packages: one for the board and accessories, and two for the GPS/GLONASS and 3G antennas which are not included by default. Raspberry Pi Hat Compatible with 40-pin Raspberry Pi header.Software start/stop via GPIO17 or GPIO18 pin configurable via Jumper “P8”.Audio – Audio codec, and 3.5 audio jack with microphone and mono audio.Main + Diversity RP-SMA antenna connectors.Data – HSPA+ up to 14.4 Mbps Downlink, 5.76 Mbps Uplink, EDGE, GPRS.Quectel UC20-G wireless module supporting.3G HAT Expansion for Raspberry Pi Specifications I previously tested their ESPino32 ESP32 board, and the company has now send me another of their new product called “3G HAT Expansion for Raspberry Pi” and based on Quectel UC20-G that support 3G and GPS/GLONASS connectivity globally, meaning it should work in any country with 2G or 3G coverage.Īfter listing the specifications, going through unboxing and assembly with a Raspberry Pi 2/3 board, I’ll write some quick start guide to show what I had to do to use GPS and connect to 3G with a Hologram SIM card. I've taken a screenshot of windows explorer to show what the SD card contains.Īs mentioned earlier both SD cards can successfully boot from the Raspbian OS and when booting this image the ACT light flashes but nothing at all when trying to boot from Android Things.Venus Supply is an embedded systems company based in Bangkok, Thailand that sells products through their ThaiEasyElec website/brand, as well as a act as a local distributor for popular DIY electronics items. Looking at the SD card it looks like its not flashing properly but I'm not 100% sure. From what I've read this means that the SD Card is being read. The red power LED comes on but the ACT light doesn't do anything. ![]() However, when android things is flashed to the SD card, no boot attempt seems to be made. 1 of the SD cards is a 16GB class 10 SD card, the other is 8GB not sure what class though, both though are able to run raspbian OS. I have now tried to flash Android Things image to the SD card, both using the console setup utility and manually using Etcher on two different SD cards. I initially installed Raspbian Pi OS on it temporarily to prove that it works and to prove that my touchscreen that I also got for the pi works OK. I have just got a Raspberry Pi 3 Model B+.
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