CH341 USB TO I2C/SPI/EPP
Waveform Generator
AHT21, MAX6675 Thermometer
USB to I2C OLED
USB to LCD
USB Input Output
SD CARD
CH376 USB Picture Frame
SD FAT32 Player PIC12F1822
W25Q64 Flash Recorder
Picture Frame PIC16F690
Color OLED Picture Frame
SD FAT32 TFT Display
Doorbell with SD/EEPROM
SD Talking Clock
SD Sound Recorder
SD FAT32 wav Player
SD Arduino Recorder
Arduino Picture Frame
FREQUENCY COUNTER
AD9833 Waveform Generator
Chrome Browser Counter
Arduino LED MAX7219 Counter
LCD Accurate Counter
OLED Accurate Counter
MilliHertz Counter
PIC Counter For Android
MAX7219 LED Counter
WiFi Frequency Counter
Frequency Generator
OLED Counter PIC12F629
Talking Frequency Counter
TFT Counter PIC16F628A
SSD1306 Counter PIC16F628A
SSD1331 Counter PIC16F628A
Arduino Counter for PC
OLED Arduino Counter
OLED Frequency Counter
TFT 10MHz Counter
PC Counter
LED Counter
Scope Screen Counter
LCD 16 x 2 Counter
LCD Arduino Counter
6MHz Android Counter
NIXIE Android Counter
Bluetooth Counters
USB Counter
OBD2
OBD2 RPM meter PIC16F876A
OBD2 Engine Rev Counter
OBD2 Diagnostic app
OSCILLOSCOPE
Logic Analyzer
PIC12F1822 Scope for PC
Arduino Oscilloscope for PC
Arduino OLED Oscilloscope
Android Oscilloscope
TFT Oscilloscope
USB Oscilloscope
THERMOMETER
Thermocouple 1023 Deg
Thermometer For Browser
OLED Thermometer PIC12F629
OLED Room Thermostat
TFT Clock and Thermometer
LED Thermometer
USB Thermometer
Serial Thermometer
Serial Thermostat
USB DS18B20 Sensor
TIMER / CLOCK
Cuckoo Clock
Real Time Clock DS3231
LED TM1637 Timer
OLED Timer Thermometer
TFT Timer Thermometer
LED Timer
LCD Timer
Clock Thermometer
Talking Clock PIC16F628A
Android Talking Clock
WiFi
WiFi, Ethernet
WiFi Thermometer
WiFi ESP8266
USB
IO for Chrome Browser
USB 16x2 LCD
USB TFT display BMP
USB Meter
USB Input-Output
USB Input-Output Android
DATA ACQUISITION
Analogue to USB (CH341)
MCP3201 on Serial Port
PC Analog Input (USB-UART)
SERIAL PORT
Serial TFT Text
Serial Inputs Outputs
Serial Port LCD
Analogue Signal to Serial
OTHERS
HC-SR04 Sensor
OLED Amp Meter
PC digital I/O (no coding)
Analogue Signal to LPT
LCD Display on LPT
Water Softener
3.7V to 5V
Solar Charger
PIC Music
Code Lock
SMALL PROJECTS  
  Technical Tips  

PIC12F1822 WITH USB TO UART OSCILLOSCOPE FOR PC

Low frequency oscilloscope, bandwidth is DC to 5KHz. Max sampling rate is 50,000 samples per second. The USB to UART (Serial) Adapter communicates between the PIC and the PC. eBay
The PIC code sends 62 bytes of input sampling to form one screen, screen sampling is taken every 0.5 second. The PC sends 1 byte that relates to time selected in the app..
The PC app is in VS2010, code and exe file are included.
The Analogue Comparator of the PIC (pins 6, 7) is used to detect zero crossing of input signal, it triggers start of sampling the trace when signal is rising.
The screen is constructed from 62 sampling. The ADC reads the input at resolution of 10 bits and the MSB 8 bits are used and the dote position is calculated.
100K Resistors bias the input to a voltage of middle of the screen, use them if your input is AC. The input is at pin 5 , for DC input bypass 1uF cap.

oled scope oledusb

line

PIC16F1827 / ARDUINO LOGIC ANALYZER FOR PC

Logic analyzer 4 channels for frequencies up to 20KHz. PIC is connected to PC via USB to UART (Serial) Adapter eBay , Arduino Uno or Nano are connected to USB directly (no need for adapter). PIC or Arduino use Visual Studio 2010 app to display the logic. Waveforms aren't accurate for frequencies over 20KHz due to the speed of the microcontroller.
The code sends 64 bytes of input sampling to form one screen, screen sampling is taken every 1 second. The PC sends 1 byte that relates to time selected in the app..
The PC app is in VS2010, code and exe file are included.
Arduino inputs are at pins 8,9,10,11 when channel 1 is at pin 8.

oled scope oledusb

line

ARDUINO OSCILLOSCOPE FOR PC

Low frequency oscilloscope, bandwidth is DC to 25KHz. Max sampling rate is 50,000 samples per second. Arduino Uno or Nano can be used. The input is to pin A0 of the Arduino which connected to PC via USB.
The PC app is in VB6 and VS2010, code and exe file are included.
The Arduino software is mostly in C code in purpose to speed up the ADC on expense of conversion accuracy. For lower frequencies a delay for each sample gives slower sweep. Input is DC or AC not acceding 5V.
The Analogue Comparator of the Arduino (pins 6, 7) is used to detect zero crossing of input signal, it triggers start of sampling the trace when signal is rising.
The screen is constructed from 62 sampling. The ATMEGA ADC reads the input at resolution of 10 bits and the MSB 8 bits are used and the dote position is calculated.
Resistors bias the input to a voltage of middle of the screen, use them if your input is AC.

oled scope oled

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ARDUINO OLED OSCILLOSCOPE

OLED low frequency oscilloscope, bandwidth is DC to 20KHz. Max sampling rate is 50,000 samples per second. An oscilloscope with these specifications has limited use, but it is a good exercise in using OLED display.
Arduino Uno or Nano can be used. Oled is 0.96" I2C SSD1306 driver.
The screen is constructed from 64 sampling. The ATMEGA ADC reads the input at resolution of 10 bits. The MSB 8 bits are used and the dote position is calculated.
Switch is on for input frequency below 100Hz.
Resistors bias the input to a voltage of middle of the screen, use them if your input is AC.

oled scope oled

line

TFT OSCILLOSCOPE

LCD TFT is digital display at its best, it displays versatile clear picture. The picture is built by entering the address and the color of a pixel or rectangle, so it's simple to use too.
LCD TFT low frequency oscilloscope, bandwidth is DC to 1000Hz. Max sampling rate is 16000 samples per second. An oscilloscope with these specifications has limited use, but it is a good exercise in using LCD TFT.
The screen is constructed from 80 sampling. The ADC reads the input at resolution of 10 bits. The MSB 8 bits are stored in the pic RAM and then transmitted to the LCD RAM by 4 wires SPI.
The time selector has 100ms per screen, 10ms and the third position is about 5ms. The trigger is done by software and can be switched off.
LCD TFT modules vary depending on the drive IC. The module in the project has the driver ST7735. I bought this module directly from China because the price was more sensible.
Code was written on MPLAB and compiled with the free HI TECH C compiler V9.80
Software includes PIC code . You are free to use the circuit diagram and the software with no limitations.

 

Circuit Description
See also Technical Tips

PIC16F690
Pin 8 is the analogue input. Input voltage range is 0 to 5V absolute max,
voltage outside this range can latch the input or even permanently damage the IC.
The clock is 8MHz by the internal osc.
The module in the project has the driver ic ST7735.

 

Circuit Description
See also Technical Tips

PIC16F876A
Pin 2 is the analogue input. Input voltage range is 0 to 5V absolute max,
voltage outside this range can latch the input or even permanently damage the IC.
The clock is 8MHz by the crystal osc.
The module in the project has the driver ic ST7735 .



Name:

Comments and questions

Copy the number from the picture It stops net-robots from adding comments.



24.04.2015 - 21:32
Name: Moty
Comment: Hi Suman, the circuit above is the whole circuit.

24.04.2015 - 18:26
Name: SUMAN
Comment: Want the full osciloscope circuit

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