This is some pictures of the OSD test board. When all the hardware is in place
for the given application, another board will be made to have it all
(processor/OSD chip/Sensor circuitry) on one board.This page is about my development of an OSD overlaying circuit that will be used in both my flying wing and my submarine.
The circuit is build up around the great chip STV5730A from ST (I do not have any left). To interface to this chip, I started using the PIC16F84, but quickly converted the code for the Atmels 90S8535. This chip has amongst others some A/D converters - witch makes it possible to get Analog information on the screen. The Circuit is placed between the Camera and the transmitter. (It will overlay the digital information on the signal provided at the input to the output).
The following pictures and text will be sectioned into the building of the OSD test cuircuit, and then be split into the programs and schematics applicable for the flying wing and the submarine.
OSD Test cuircuit.
The design was more or less taken from the application notes in the Datasheets for the STV5730A supplied by ST, I just made a nice board to have a suitable "module" to test the Software / Hardware on.
This is some pictures of the OSD test board. When all the hardware is in place
for the given application, another board will be made to have it all
(processor/OSD chip/Sensor circuitry) on one board.
Yes, Pictures taken of TVs does not turn out well (-: - The Software in the chip
is a first attempt for the submarine. Please read below
OSD for the Submarine.
(This includes the Mechanical and Electrical construction of needed equipment)
The information transmitted to the user should be the following:
Voltage on battery 1.
Voltage on battery 2.
Temperature of Water.
Temperature of the Motor controller.
RPM of drive-shaft.
North-South-East-West direction in 45 degrees resolution (Dinsmore compass).
Different water sensor inside hull for water-penetration warning.
These will be shown like above pictures:
____________________________________
BATTERY TEMP DIR RPM
12,3 05,1 14 50 NW 1500
STATUS: OK
____________________________________
From the left, you will have 2 voltage measurement inputs displayed (Battery/ Regulated), then you will have 2 Temperature inputs displayed (Water/ Motor) You will have the Direction represented in 45 Degrees resolution via a Dinsmore compass.
The Status at the bottom of the screen will display relevant status information, Like if Water is detected in the submarine, or if the depth measure is too deep.
The above description is already implemented, but much more information can be added to later.
Follow this link to get the Datasheet on the STV5730A http://searchpdf.adobe.com/proxies/1/3/7/32.html
Follow the link to get the Datasheet on the Diensmore compass <LINK>
Email me at -
Email me at - kimfmx@gmail.com