Microduino Video output
Bill of Materials
Before we start to build a video signal, we must connect Microduino to a TV. The cheapest and the simplest solution is RCA cable (sometimes called cinch cable) which is used to send audio or video signals. In the chart below, you can a RCA cable with three connectors.
These cables typically transmit sound (red and white connectors) and video (yellow connector). In this case, all we need is the cable of the yellow connector.
Video format consists of PAL and NTSC. The former is mainly used in China：
tv.select_font(font4x6);//Set front tv.clear_screen();//Clear
tv.draw_line(0, 10, WIDTH - 1, HEIGHT - 1, WHITE);//Draw line
tv.draw_rect(0, 10, WIDTH - 11, HEIGHT - 11, WHITE);//Draw Rectangle
tv.draw_circle(WIDTH / 2, HEIGHT / 2, 20, WHITE);//Draw circle
Step 1: Since Microduino has no RCA jack field, so how to connect Microduino to TV is a problem. Surely, we can add a RCA jack field on Microduino. However, we will use another way to connect cable to pins of Microduino.
The outermost layer is the ground wire. The signal wire is in the middle, which is protected by a layer of insulation.
Step 3: To connect RCA to Microduino, connect 1000 Ω to D9, 470 Ω to D7, and Gnd to GND, as follows:
The connector of RCA connecting to the AV connector of your TV is yellow and very easy to recognize.
Step 4: A library function will be needed to solve video encoding output problems of PAL and NTSC: http://code.google.com/p/arduino-tvout/
To download the code and compile successfully.
Step 5: To run the code and see what happens on the screen of the TV.
A line, a circle and "Hello Microduino" will be displayed recurrently on TV. As follows: