Picture Frame PIC16F690
Talking Clock PIC16F628A
OLED Thermometer PIC12F629
OLED Thermostat PIC16F628A
TFT Counter PIC16F628A
SSD1306 Counter PIC16F628A
SSD1331 Counter PIC16F628A
Color OLED Picture Frame
Arduino Counter for PC
Arduino Oled Code Lock
PC digital I/O without MCU
PC Analog Input without MCU
Arduino Oscilloscope for PC
Arduino OLED Oscilloscope
Arduino Picture Frame
OLED Bitmap Arduino / PIC
OLED Arduino Counter
OLED Timer Thermometer
OLED Frequency Counter
Android Oscilloscope
OBD2 Engine Rev Counter
OBD2 Diagnostic app
TFT Clock and Thermometer
WiFi, Ethernet
WiFi Thermometer
WiFi ESP8266
Doorbell with SD / EEPROM
SD FAT16/32 for .bmp
PETIT FAT bmp Display
TFT Timer, Thermometer
TFT Oscilloscope
SD Talking Clock
Android Talking Clock
SD Sound Recorder
SD FAT32 wav Player
SD Arduino Recorder
LED Thermometer
LED Timer
LCD Timer
TFT 10MHz Counter
100KHz Counter For PC
1MHz Counter For PC
8 Digits LED Counter
Scope Screen Counter
LCD 16 x 2 Counter
LCD Arduino Counter
6MHz Android Counter
NIXIE Android Counter
Bluetooth Counters
USB Counter
USB TFT display BMP
USB DS18B20 Sensor
USB Thermometer
USB Meter
USB Oscilloscope
USB Input-Output
USB Input-Output Android
USB 16x2 LCD
Serial TFT Text
Serial Inputs Outputs
Serial Port LCD
MCP3201 on Serial Port
Serial Thermometer
Analogue Signal to Serial
Serial Thermostat
MCP3201 on LPT
Analogue Signal to LPT
LCD Display on LPT
Water Softener
HP Stream 7 docking
3.7V to 5V
Solar Charger
Infrared Decoder
PIC Music
Code Lock
Code Lock with LCD
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OLED THERMOMETER PIC12F629

OLED display, 128x64, 0.96", SSD1306, I2C with PIC12F629 and DS18B20 sensor. Oled is driven by software (bit banging) I2C. Code includes functions for reading the sensor.
Temperature range is -55 to 100 centigrade.
470 ohm resistors are for attenuating 5V output of the pic to 3.3V input of the OLED.

OLED ROOM THERMOSTAT PIC16F628A

OLED display, 128x64, 0.96", SSD1306, I2C with PIC16F628A. Oled is driven by software (bit banging) I2C. Setting the room temperature by 2 buttons.
Output transistor is to drive a relay or directly 24VDC input to a central heating boiler. Hysteresis is 0.5 degree. Reading the temperature is every second.

USB THERMOMETER USING DS18B20 SENSOR

USB thermometer DS18B20 temperature sensor. Included Visual Basic 6 software, Visual Studio 2005 C# code, PIC C code and a circuit diagram. The PIC interface to the PC is HID class.
The DS18B20 sensor has a range of -55 to 125 centigrade in accuracy of 0.5 degree and resolution of 9 to 12 bits. The interface to the pic is via one digital line, the 1 and 0 is determined by pulse duration. The code includes the commands to read temperature and set the resolution.
HID class (human interface device) is a class of devices like the mouse and the keyboard, the data transfer rate is limited to 64KB/S. The PC already has a driver for HID USB.
C# code is modified Microchip code from the USB framework, Microchip Solutions v2012-04-03.
VB6 code includes guidance to setting up the PC. The PC register the PID (Product ID) and VID (Vendor ID) of the USB device when it's plugged, the VB code uses these ID's to communicate with the device. For commercial VID it is needed to buy it from USB-IF, but in your lab you can use any number.
The source code is derived from freeware from these sources: http://janaxelson.com/usb.htm , http://openprog.altervista.org/USB_firm_eng.html
You are free to use the circuit diagram and the VB software with no limitations.

thermo thermo

thermo 629

Circuit Description
See also Technical Tips

Pushbuttons are momentary N.O.
DS18B20 can be any type of casing.
OLED module is I2C interface, 4 pins connector. Driver SSD1306. From ebay: https://www.ebay.co.uk/itm/0-96-I2C-IIC-Serial-128X64-White-OLED-LCD-LED-Display-Module-for-Arduino-UK/192294699203?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649

 

Circuit Description
See also Technical Tips

PIC18F2550
Pin 14 is 3.3V internal supply for the USB transceiver.
Pins 15,16 are the data lines to the USB connector on the PC.
Pin 20 is the PC 5V powering the PIC. It is limited to 100mA by the PC. 0.47uF is for decoupling.
For USB wiring info: http://www.interfacebus.com/Design_Connector_USB.html

DS18B20 SENSOR
Any type of case can be used.




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Comments and questions

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05.08.2020 - 14:58
Name: Ninja
Comment: Works well!!!

15.02.2019 - 19:48
Name: Dusajn
Comment: Excelent job, work in first plug :-)

08.02.2017 - 15:30
Name: Diego Zaldívar
Comment: mas que interesante, útil, saludos Diego.

26.01.2017 - 23:08
Name: Moty
Comment: De nada, Erasmo.

26.01.2017 - 20:14
Name: erasmo ayala yañez
Comment: muy buena informacion. gracias

06.02.2016 - 17:38
Name: khe
Comment: ok

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