PIC Microcontrollers Projects Samples

PIC Microcontroller ေတြနဲ႔ပါတ္သတ္တဲ့ နမူနာ Project ကေလးေတြပါတဲ့ Website ေလးပါ။ Source COde, Hardware Assembly ေတြပါထည့္ေရးထားလို႔ အဆင္ေျပမွာပါ။

http://www.micro-examples.com

I2C EEPROM Operation (Source Code)

I2C (EEPROM) Operation ေလးေတြပါ။ ဒါေပမယ့္ MiKroC Compiler နဲ႔ေရးမွရမွာပါ။ PIC18F series နဲ႔ 24LC256 EEPROM Memory အတြက္ပါ။

ZigBEE Topologies

ZigBEE မွာ Topology ၃ မ်ိဳးရွိပါတယ္။ ပံုမွန္ Wireless Network Topology ေတြနဲ႔ ခပ္ဆင္ဆင္ပါပဲ။

1. ZigBee Star
2. ZigBee Tree
3. Zig Bee Mesh Topology
ေတြလို႔ ရွိပါတယ္။ ဘာမွေတာ့ မဆန္းပါဘူး။ ပိုၿပီး Wireless Network Performance ေကာင္းလာတာပဲ ရွိပါတယ္။ လုပ္ငန္းေတြက အတူတူပါပဲ။ ထံုးစံအတိုင္း Performance ေကာင္းခ်င္ရင္ Devices ပိုတပ္ရတာေပါ့။

ZigBee Star Topology
ZigBee Tree Topology
Zigbee Mesh Topology

ZigBEE Introduction

WPLANs (Wireless Personal LANs) ေတြကို တည္ေဆာက္တဲ့ေနရာမွာ WiFi, Bluetooth, ZigBEE ဆိုၿပီး technology အမ်ိဳးမ်ိဳးရွိပါတယ္။ အဲဒီထဲမွာ ZigBEE က ေစ်းအသက္သာဆံုးနဲ႔ တည္ေဆာက္ရတာ အလြယ္ကူဆံုးပါ။ ZigBEE က Low-Power Digital Radio ကိုသံုးထားတာျဖစ္ပါတယ္။ short range, low data rate, low power requirement applicationေတြတည္ေဆာက္တဲ့ေနရာမွာ သံုးေလ့ရွိၾကပါတယ္။ IEEE 802.15.4 Standard ကိုအသံုးျပဳထားပါတယ္။ အသံုးျပဳေလ့ရွိတဲ့ ေနရာေတြကေတာ့။
- Home Automation
- ZigBee Smart Energy
- Telecommunication Application
- Personal Home
- Hospital Care ေတြမွာပါ။
တစ္ခုေတြ႕ဘူးတာက ေဆး႐ံုေတြမွာ လူနာကိုရွာတဲ့ စနစ္နဲ႔ စတိုေတြမွာ ပစၥည္းရွာတဲ့စနစ္ကေလးေတြ လုပ္ထားတာေလးေတြပါ။
ေနာက္ထပ္ သံုးတဲ့ ေနရာေလးေတြကေတာ့။
- Home Entertainment and Control — Smart lighting, advanced temperature control, safety and security, movies and music
- Home Awareness — Water sensors, power sensors, smoke and fire detectors, smart appliances and access sensors
- Mobile Services — m-payment, m-monitoring and control, m-security and access control, m-healthcare and tele-assist
- Commercial Building — Energy monitoring, HVAC, lighting, access control
Industrial Plant — Process control, asset management, environmental management, energy management, industrial device control

ZigBEE (Device Types) ေတြကေတာ့ သူ႔ရဲ႕ အသံုးေပၚမူတည္ၿပီးေတာ့ ၃ မ်ိဳးခြဲထားပါတယ္။
ZigBee coordinator(ZC): The most capable device, the coordinator forms the root of the network tree and might bridge to other networks. There is exactly one ZigBee coordinator in each network since it is the device that started the network originally. It is able to store information about the network, including acting as the Trust Centre & repository for security keys.
ZigBee Router (ZR): As well as running an application function a router can act as an intermediate router, passing data from other devices.
ZigBee End Device (ZED): Contains just enough functionality to talk to the parent node (either the coordinator or a router); it cannot relay data from other devices. This relationship allows the node to be asleep a significant amount of the time thereby giving long battery life. A ZED requires the least amount of memory, and therefore can be less expensive to manufacture than a ZR or ZC.
ဘာသာျပန္ရင္ မွားမွာစုိးလို႔ တုိက္႐ိုက္ တင္ေပးလိုက္ပါတယ္။

စိတ္၀င္စားတယ္ဆိုရင္ေတာ့ Freescale ကထုတ္တဲ့ Demo Board ေလးေတြက ေတာ္ေတာ္အဆင္ေျပ ပါတယ္။ ေက်ာင္းသား Project ေတြမွာ သံုးရင္ ေတာ္ေတာ္အဆင္ေျပတဲ့ Development Tool ေလးပါ။ သူ႔ကို Zigbee Router နဲ႔ End Devices ေတြအျဖစ္ သံုးလို႔ရပါတယ္။