This test is based on our basic CC1101 board, it is the basic version, not the highest signal strength, nor using the on-board MCU to simply the communication to serial port. So this board works at SPI originally. First what is LQI and RSSI, we copied an answer from this link to here briefly: LQI
About the timer socket: This timer ac socket can mount on the normal AC socket, and other domestic appliance can further plug on it, there is a button and a few LED indicating time: 2hour, 4 hour, etc, when you press the button, LED will light up and switch accordingly so you know the time
When you finished the design and manufacturing of your board, it is important to run a test to see if everything is working as expect, for many simple boards, this is done by human eyes check, but sometimes for more complex board, it is better to run a fully functioning test. Let do it here.
We are working on some boards that can directly communicate with PC these days, so here comes with three most typical boards: USBASP: A wonderful programmer tool we have, do most of programming work, it also using V-USB interface. Atmega32u4 small breakout board: Similar to arduino leonardo and arduino micro, plug the USB in then
In the weekend, we didn’t work on the new products for Electrodragon too much, but just tried some fun with raspberry pi, a few main work have done with raspberry pi and it is really pleasant for me: Set up the VNC view on startup, the old methods to let it work on startup is
As you may know, SIM900 is a quad band modem being able to operate in 850,900,1800,1900 MHz bands, while SIM900A is a dual band GSM modem being able to operate only in 900,1800 MHz bands. You can see the supported countries in the list below, however, the fastest way is to check the actual frequency
DIfferences with a normal finished PCB: This is a rough introduction about the “unfinished” quick PCB service (Let’s call it UQ-PCB in the following text), what it is? From the meaning of the name, it is not-yet finished, the board have these following differences with normal “finished” board: No solder mask and silk print on
Raspberry Pi is really a nice mini PC to play, apart from that, the main programming language on RPi is also maybe one of the best on the world, it let people feel once we learn it we would like to learn it forever. There are a few great advantages as we tried so far:
This is a 5V 260mA solar panel board, with 5V voltage you can directly charge most USB device, althought the current is maybe only 1/4 of normal charger, but it is fun to try. See the images directly about how to build it. All items are available in our store.