ฝัง
- เผยแพร่เมื่อ 2 ก.พ. 2018
- LoRa and ESP32 are everybody’s darlings, and when a combination in the form of these small boards appeared on our platforms, it seemed they are a perfect combination. Is this true? Let’s test them.
- A 433 MHz Heltec
- An 868-915MHz Heltec
- An 868-915 TTGO
- And as a reference the Hope RFM95 868 MHz
These boards can be used as LoRa nodes and as TTN gateways.
In this video we have a closer look at these features:
- The ESP32
- The LoRa transceiver
- The antennas
- And the power management part
Links:
TTN Forum: bit.ly/2GFo0TN
ESP32 LorRa Boards: s.click.aliexpress.com/e/2FyRn2n
LoRa32u4: s.click.aliexpress.com/e/vnUFmAy
Whisper Node Lora: bit.ly/2GCB0td
dB vs VSWR: ww2.minicircuits.com/app/DG03...
Antennas: s.click.aliexpress.com/e/23vnqzb
Supporting Material and Blog Page: www.sensorsiot.org
Github: www.github.com/sensorsiot
My Patreon Page: / andreasspiess
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I do have to thank Andreas for this one; ain't many of us hobbyists that have the kind of hardware to test antennas like this properly, so it's very nice that he does it for us.
Perfect and in details analysis. Congratulations Mr. Spiess!
Who needs a lab or an external analysis company when you have Andreas as a friend ??!! Always torough, accurate and rigorous ! Danke !
Excellent analysis! You truly live up to what we expect from engineers in the DACH region.
Thank you for sharing your vast knowledge and laboratory test equipment. Excellent !
This channel has some of the best videos on TH-cam!!!
thank you sir i was planning on getting one of these boards from ebay after watching your lora war driving video... now ill be getting a esp/hopefm setup and just doing the solder myself.
Andreas, you are a neat guy, a man after my own heart! I love your videos, I have learned so much about Arduino and module applications, please keep up the GREAT WORK.
Fantastic video yet again Andreas. Thank you so much for your continued great content!
This is a great video. It really shows some great investigation using tools that most of us mere mortals do not have access. The antenna results are truely staggering. Thanks for sharing!
2 years ago and still the best video about LoRa!
Another excellent video, lightyears ahead of anyone else. I see so much potential for these low power ESP32 Lora boards . .
Excellent analyse! Thank You, Andreas!
Good Morning Andreas
As a Patreon supporter it sure is nice getting the videos early! More of your subscribers should take advantage of the opportunity. The new boards have a very attractive of combinations of features. I reviewed them last week and came to the same conclusion that you did - not quite ready for prime time. Hopefully their shortcomings will be addressed in V2 hardware
I love seeing these antenna tests! Please do more!
thanks sir, watching your channel is like attending classes ♥ with a good professor
Super, thanks! Having the right tool for the job really does help. This confirms my experience with the Heltec helical antenna. Now time to find the post on TTN forum showing how to cut these and optimise a simple wire 868 antenna using a small piece of shield braid. Much obliged Andreas!
Thanks very much for your summary. It shows that you need to be critical when choosing the right antenna.
Another exceptional analysis. Thank you for sharing!