DIY Kinematic GPS Using RTKLIB

This is a post that has been a long time coming. Over the winter break, one of the projects I took on was to build a survey-grade GPS system that could calculate its position using either Real Time Kinematics (RTK) or Post Processed Kinematics (PPK). These technologies allow a user to achieve GPS measurements accurate[…]

digi xbee pro 9xtend

Digi XTend® ۹۰۰ MHz ۱ Watt Long-Range OEM RF modules ISM 900 MHz operating frequency ۱۰۰ mW – 1 Watt power output (up to 40 mile range*) ۲۵۶-bit AES Encryption Available with DigiMesh® Available in smaller, lower power XBee Surface Mount form-factor

XTend 900 1W RPSMA 40 Miles Range XTEND XBEE Wireless Telemetry Module

Product Details: Place of Origin: CHINA Brand Name: LXXTECH Model Number: LXX-0403 Certification: Payment & Shipping Terms: Minimum Order Quantity: ۱ Price: Good price Delivery Time: Payment Terms: TT ,paypal,ESCROW Supply Ability: Detailed Product Description XTend 900 1W RPSMA 40 Miles Range XTEND XBEE Wireless Telemetry Module Description: –  The XTend Modem packs a ton[…]

XTAB – XTend to XStream adapter board

Here are some photos of the two XTend Adapter Boards-with and without Accessories-(p/n: XTAB and XTAB-A). The XTABs create an XStream footprint for the XTend OEM module. Following are some explanations of the part numbers. Note: Digi no longer sells these adapter boards. ۱ – XTAB installed on XIB-R with JM2R6-CR3-7I antenna cable ۲ – Top of XTAB (back) and XTAB-A[…]

رابط USB به سریال TTL

  ارتباط سریال یک از ساده ترین و کاربردی ترین راه های ارتباطی بین کامپیوتر و میکروکنترلر و … می باشد، اما از طرف دیگر با توجه به حذف شدن پورت COM در کامپیوترها و لپ تاپ ها و همچنین اختلاف سطح ولتاژ RS232 با TTL باعث شده بسیاری از کاربران با این چنین مشکلاتی[…]