It is about Visiom Impaired Person
Thursday, February 16, 2012
Apr97600 Example.
Constructing Apr9600 circuit
- Random Access Mode - This mode can be 2/4 or 8 message at on time.
- Tape Mode, Auto Rewind - Auto rewind the message
- Tape Mode, Normal Operation - Normal operation . 1 message at 1 time and can record over 60 sec.
Friday, February 10, 2012
Constructing 12v to 5c dc ConverterCircuit
Block Diagram
Block diagram shown above is supplied by 12 or 9 volt from bus module. When the bus driver ON the power from the module, driver need to key in the bus number. E.g. (512). After the bus number has been key in into the module, the data will converted into analog data. This process called digital analog converter (DAC). This happen because we need to transmit the analog data into the VIPs module.
The analog data will transfer to the VIPs module by the antenna and will decode into digital data. This process called analog digital converter (ADC). VIPs will get the data from the decoder and buzzer or sound will announce the bus number. LED function is to indicate either the VIPs need to board the bus or not. The process be repeated until the VIPs confirms their bus.
Sunday, February 5, 2012
Buying Component
2/2/2012
Go to Jalan Pasar buying component for 12V to 5V circuit and audio circuit which is using apr9600 .
Problem encountered during buy a component :
- Traffic Jam at Cheras. (--___--").
- IC for audio isd2500 is not available on the market right now.
- Not enough gold/money.
Counter the problem :
- I'm suppose use motorcycle that day.
- Change audio IC to APR9600. Also audio IC.
- Borrow from my friend maa... =)