ProjectProto

Proteus VSM models for some Nokia LCDs


LCD controllers used:
PCF8833 - Nokia 6100/6610/6610i
S1D15G14 - Nokia 3530/3510i/3595
PCF8814 - Nokia 1100

Download: Nokia LCDs - Proteus VSM Models.zip
(MODELS + LIBRARY + some demos)
* just copy the files to their corresponding folder

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UPDATES:
11-21-10
- N6610LCD model (&symbol) was updated based on the datasheet of PCF8833 alone,
but the result was different from expected. =(
again, this model still have lots of problems!
- found a bug on the N3530LCD model (PASET & CASET commands affected),
corrected model will be uploaded soon.
- I apologize for I cannot upload the source codes (msvc++ 2008) for these projects.
( Proteus ISIS itself is NOT free. VSM SDK, I assume, is also not open-source).
ask for code snippets here: "Creating Proteus Models" ,instead.

Inductance and Capacitance Meter using Microchip's PIC18F2550 connected to USB using HID class (Plug-n-Play).

* f1, f2. and f3 are the frequencies defined by the equations stated on Digital LC Meter .



diagram using internal Analog Comparator and Timer Peripherals of PIC18:

download link (HEX and PC app): PIC18F2550_USB-HID_LC-Meter.zip
elab.ph forum link: PIC18F2550 USB LC Meter

# edit (10-20-10)
added "Calibration option" ( same PIC18F firmware )

• reference capacitance range is 1.0nF +/- 5%
• Fosc (20MHz crystal with PLL) frequency range is 48MHz +/- 200ppm

# edit (08-14-11)
V1.2 -> updated host-side application,
-> should now work both on 32-bit OS and 64-bit OS hosts.

*This application is tested only with Samsung Galaxy GT-i5700 Spica (rooted Android 2.1 OS, i570EXXJD1 Baseband version).
The transmitter circuit uses Microchip's dsPIC33FJ16GS504 for the analog-to-digital conversion of the input signals on two channels. The processed data on the dsPIC are then transmitted to the phone (for waveform display) via the LMX9838 bluetooth SPP module.

[埋込みオブジェクト:http://www.youtube.com/v/DIDy3PAReXo?fs=1&hl=en_US]
specs/ranges:

• time per division: {5us, 10us, 20us, 50us, 100us, 200us, 500us, 1ms, 2ms, 5ms, 10ms, 20ms, 50ms }
• volt per division: {10mV, 20mV, 50mV, 100mV, 200mV, 500mV, 1V, 2V, GND}
• analog input (depends on external pre-amplifier configuration): {-8V to +8V }

The source codes for the bluetooth communication is based on Bluetooth Chat example from http://developer.android.com. That example contains three java source files. And, I've completely copied the "DeviceListActivity.java", which is used for searching remote bluetooth devices. Then I've modified the "BluetoothChatService.java" to use only the RFCOMM Client functions, and used the well-known UUID "00001101-0000-1000-8000-00805F9B34FB" for the Bluetooth RFCOMM/SPP.

For the plotting of waveforms, I'm using SurfaceView object to draw on its canvas. This tutorial found on www.helloandroid.com helps me a lot for this task: "How to use canvas in your android".



The rest of the job mainly involves porting of my previous Python S60 script to JAVA language. It was too painful on my side, because I had to convert a single script file to multiple java + xml source files! Nonetheless, it was a good experience for me on learning the Android SDK (JAVA programming).

Project source codes for Android and dsPIC (with APK and HEX) :
AndroidBluetoothOscilloscope.zip

Electronicslab.ph forum link : Android Bluetooth Oscilloscope

Here are some interesting projects that are also based on the Bluetooth Chat example:
Bluetooth Controlled Model Car
SPRIME

Special thanks to:
Samdroid Forum for the customized/rooted firmwares for our Spica.
Tipidcp Spica users for sharing their tips and experiences with this android phone.

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#edit (10-15-2010)
Here's now my circuit. Nothing special on it, all are based on existing circuits.

*The dsPIC I have used is most probably NOT the best choice for this project because of the many left unused peripherals (extra pins). But, this is the only part readily available in my bin and it has the fastest ADC (2 x 2MSps) among the chips I have.
*If you prefer to change the input range via the op-amp preamp, the computation is located on the "adc.xmcd" file.
*You can use other SPP bluetooth modules aside from LMX. (accdg to manufacturer, it's already obsolete)

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#edit (9-14-2011)

It's almost a year now, and yet some people are still interested in this project (considered to be obsolete). So I've decided to place the source repository also on Google Code site. You can either Browse or use git to have your own local copy:


See also the Changes, if you want also to learn on how to modify the code. I've started the first 'commit' with a simple "hello world" from the SDK project template. And then changes were made until the desired final oscilloscope application is achieved.

Sample code generator for ZiLOG's Z8F64xx Z8 Encore family of 8-bit Flash MCU's. Tested only with ZDSII v4.11 (C compiler-v3.60) on Z8F6423 running at 20MHz crystal. It's expected to work also with other parts, like Z8F6421 of e-Gizmo's IRC Slimboard. It generates sample codes of "timer interrupt" and "pulse width modulation(pwm)" for TIMER0, TIMER1, TIMER2, and TIMER3 peripherals. Please refer to the datasheet("part selection guide" table) of this family to see what timer peripherals are available on a particular part.

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Timer Interrupt Code Generator

System Clock Frequency:		Hz
Select Timer Peripheral:	TIMER0TIMER1TIMER2TIMER3
Desired Interrupt Rate:		Hz

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PWM Code Generator

System Clock Frequency:		Hz
Select Timer Peripheral:	TIMER0TIMER1TIMER2TIMER3
Desired PWM Frequency:		Hz
Initial PWM Duty Cycle:		%

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note: I'm a newcomer to javascript. Please notify me of found "bugs" in these code makers.

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Bluetooth Controlled Mobot using Z8F0823 and LMX9838.

It's supposed to be my entry for a friendly competitions of "sumobots". But, I wasn't able to make it "autonomous" on time for the event. It only have four sensors on each corner to detect "black" lines, but no sensor for detecting an opponent. And so that I can still test the hardware, I just made it manually controllable by using my phone's bluetooth. The bluetooth module is the same circuit I used in my BT minibot . I also used the same python S60 script for my N6120c (Symbian phone) controller.











forum link: Filipino Version of Robot Wars

Mini-STM32 SD/MMC WAV (RIFF-WAVE-LPCM format) Audio Player with Spectrum Display

Simple SD Audio Player with an 8-pin IC by ChaN

DSP (FFT) libraries for Cortex M3 by Ivan Mellen

CooCox CoOS real-time multi-task OS

minimal hardware modification:

demo video:
[埋込みオブジェクト:http://www.youtube.com/v/sNo6axRcdeQ&hl=en&fs=1]

Project files: Mini-STM32 WAVE Audio Player.rar

forum link: Mini-STM32 board

As inspired by Simple SD Audio Player by ChaN, this project uses Microchip's PIC18F2550 to read RIFF WAVE files, and display some file information on the N6610 LCD; And then it will play the audio itself through PIC's PWM with a simple RC filter on the output pin. The hardware actually comes from my previous project, and I just attached a ready-made audio amp (w/ speaker) for the demo.
Schematic:
Due to PIC's peripheral limitations, I only set the PWM frequency to 187.5kHz and not the 250kHz carrier frequency originally used by ChaN, because it's the maximum PWM frequency than can still get an 8-bit resolution of the duty cycles (=48MHz/256). It is also possible to use R-2R ladder in stead of (low-pass) filtering the PWM output since there still enough unused digital output pins for this approach.
On the software part, I wasn't able to make a good data buffering as good as what ChaN did. It's noticeable with WAVE files with higher bit-rates (=SampleRate*NumChannels*BitsPerSample). Nevertheless, it can still support up to 48kHz sampling rate, but with only Mono channel and 8-bits/sample resolution.

demo video:
[埋込みオブジェクト:http://www.youtube.com/v/mRzOwF4bx7c&hl=en_US&fs=1&]

Source code(PICC-18) with and without LCD: PIC18 SD WAV Audio Player

My on-going project: currently porting the code to STM32F103RB for additional features.

Some useful software (shareware) tools:
TextAloud - Text to Speech software
Switch Sound File Converter-multi format audio file converters