ฝัง
- เผยแพร่เมื่อ 19 ส.ค. 2018
- This video will describe how to send GPS NMEA data strings over a LoRa radio link at 9600 bps over the air data rate. The LoRa modules are the E32 series from Ebyte.
www.parallax.com/ Propeller Flip
www.cdebyte.com/en/ LoRa E32-DTU
us.banggood.com/ FTDI, Nano, Bluepill
www.dipmicro.com/store/ USB to serial cable
www.gpscity.ca/ Garmin GPS - วิทยาศาสตร์และเทคโนโลยี
![[UNCUT] ฝันรักห้วงนิทรา | EP.8 (4/4)](http://i.ytimg.com/vi/RDYJYiDwsj0/mqdefault.jpg)
Excellent as usual. Love your tutorials..
That was great! Thanks for making this video. Really appreciate it!
Don't forget about proper duty cycle usage for this radio band. From what I have found in datasheet Lora makes it a little easier to control duty cycle but may have an overall higher duty cycle if you are setting for maximum sensitivity.
Great video tho! I want one of those data transveivers with the sound output now.
What a fantastic channel. Subscribed.
Thanks for the support!
Great stuff.
sharp !thank brother share knowledge for me
Excellent !!
Building a small portable LoRa tracker with the E32 and a GPS device would be a fascinating. I have been experimenting with the E32 and 9600 bps and the E32 is a powerful device. The data is being picked up in UBlox demonstration software that gives detailed data on the ground. The problem is how to build the GPS + LoRa device small enough for use in a flying vehicle.
Sounds like miniaturization will be the key. U-Blox makes a variety of small compact GPS receivers which are used in drone applications. They have a built in antenna and sealed in a plastic enclosure. Your students will have fun with this one.
0033mer - Suggestions? Arduino Uno or Mega? or dump the raw output into the E32 module somehow?
Start out simple. Feed the TTL serial Tx pin of GPS directly into the Rx pin of the LoRa serial port. Configure the GPS to output the desired NMEA string(s) which will be sent every second. The LoRa radio will transmit automatically as it receives the NMEA strings. The receiving LoRa radio with FTDI connected to serial port is connected to your computer USB port. Your mapping software will parse out the desired data from the NMEA string and display location on map.
@@0033mer is this achievable using a pair of LoRa SX1278 433 MHz Wireless rf Module iot Transceiver CDSENET E32-433T20DT UART Long Range 433MHz rf Transmitter Receiver ? Basically what I'm interested in is tranmitting the nema strings over the air with this transcievers. Everyone is using an Aduino in between, but for my application I only need to pass the nmea strings to a bluetooth module (HC-05) for example. So, my config would be : GPS Module --> LoRa SX1278 ...... air ...... LoRa SX1278 -->HC-05 --> Android Phone. Would this work?
Use small gps devices meant for drone + stm32f103c8t6(blue pill on ebay) + rfm95 type Lora module is what I am working on for telemetry for my quadcopter. Once I get a good protocol set up I want to have backup control over the Lora also. Main reason for Lora addon is to keep track of quadcopter status, location, possible follow me mode with another GPS on my person sending coords back to copter thru the Lora link.
Also pay attention to the duty cycle (TOA - Time on Air) to be followed by your Governments restrictions on this band. We may be at low enough transmit powers that it probably does not matter but just as with quadcopters better to play it safe so we dont lose our freedoms. I will be investigating how low I can go on my TOA while still having fast enough updates to serve a purpose, especially since one of my "Nodes" will be in the air 30-50meters my node could spread its signal alot further.
Good luck and let the Lora revolution begin :)
Very cool. Maybe you could track a cow or a vehicle with it.
great and simple
have you try to send a binary uart data?
what is the baudrate that you use?
You can sent binary data and select the over the air and UART baud rate with the config software.
th-cam.com/video/JvBC7cEgI0E/w-d-xo.html
Will the transceiver pick up all data that is in the air on that frequency? With other words, how can you be sure the incoming data isnt corrupted by other transmitters?
433Mhz / 868Mhz is so polluted these days, that by using an SDR receiver, there are constantly signals being picked up from other devices.
The LoRa radio is tuned to the 915 Mhz ISM band. Each packet sent is encrypted with CRC and FEC (Forward Error Correction) so the receiver will only see good data or no data, never corrupt data. If major interference is a problem then you can go with FHSS radios that will hop around any interference. th-cam.com/video/8OcADT-bp94/w-d-xo.html
What would be like if therea are 50 devices sending gps data every second and one receiving? What would be success rate? Is there any other solution to this?
Are the EBYTE LoRa radios that noisy when Tx’ing?
I have a radio receiver on tuned to 915 MHz to monitor the data bursts transmitting from the LoRa module.
hi, i have ebyte e22 400T30d 1w transciever and i need 5w ebyte transceiver to communicate each other, what 5w ebyte model can you recommend
Ebyte does not make a radio module with an RF output greater than 1 watt.
@@0033mer they have this e90 Dtu, e32 DTU 5w
Ebyte manufactures radio "modules" that operate in the license free ISM band of 900 MHz and 2.4GHz with a maximum of 1 Watt RF output power. 433 MHz DTU operation in Canada and USA is in the amateur radio band and is not license free. Check your local laws for the operation and power restrictions in this band that applies to your country.
hi,
I am looking for a lora receiver equipoed with bluetoot or wifi suitable to receive nmea data from the E90 and send them to a ios or android device.
could you suggest me a product suitable for that?
You can build your own with Ebyte E32 Lora radio modules, HC-06 bluetooth module and a bluetooth serial terminal app running on your smartphone.
www.ebyte.com/en/product-view-news.aspx?id=174
www.amazon.ca/Pass-Through-Communication-Compatible-Atomic-Market/dp/B00TNOO438
0033mer
Thank you for your reply,
Since I am not able to build It, I am looking for a ready to use commercial device.
Waiting for your thoughts .
Gigi
Search online for GPS trackers. There are many to choose from. Pick the one to fit your application. eg store.rakwireless.com/products/rak7200-lora-tracker
thank you for your patience,
I meant I am looking for a device able to receive Gps data sent by a Ebyte e32 and send them to the smartphone. May I use one more Ebyte e32 connected with a USR-W630?
Yes, that will work. The USR-W630 will accept RS-232 and RS-485 from the E32 DTU.
What is the range/distance this can cover?
Check out this video:
th-cam.com/video/jZB5SH8gmAg/w-d-xo.html
@@0033mer thanks! This is really good work! I'm currently trying to build a product using LoRa, I would appreciate some info and advice from you. I would like to talk to you on a call, I'd really appreciate it. How can I get in touch with you? You can drop me a note at mhdshk@gmail.com if you're not comfortable sharing your contact here.
Thanks!
It is just more convenient and safer to use MCU as WiFi Access Point with its own IP and even server or tiny fast routing device.
Lora has much lower bandwidth and less capabilities.
For close proximity Wifi is easiest, but even then getting good 2.4ghz or 5ghz coverage from your router to your yard is difficult without better than isp equipment.
For longer range than your yard, we're talking 1km-20km range with proper radio settings.
Bandwidth is hardly a concern for IoT applications, such small data packets, wifi is almost a waste of electricity in IoT applications. And Im not just talking out my butt either.
I built an Ardupilot 450mm quadcopter- arduino mega + dragino wifi shield(mini dd-wrt) router + I coded my own android app to connect to Wifi shield and send commands to ardupilot firmware, it flew, I got 3-4 flights out of it, then one day at the park I flew it farther out then I had ever with so many trees and houses, what happened when it got about 30m away from me and closer to the nearby houses?
Signal loss, complete failure of control from me, failsafe kicked in and wind caught it, I have not seen that quad in over 3 years now, it may still be in the trees.
My point: To have full, and less than 100ms latency I was only using maybe 3kB/s. Wifi was easy yes, easiest wireless control system for me to make then, but if I had been using a Lora module or even just a semtech SX in fsk mode I would still have that quadcopter probably, signal wouldnt have dropped at all at 30m.