based on HPD13A
xbee standard 
yes that converterboard looks like it would probably fit … I allready started making one myself 
That is HPD13A (4-layer PCB, according to @rocketscream).
HPD13 was the version without shield, which looked similar to RFM95 (2-layer).
Yes, it is the same as on the TTGO V2 (apparently) on which I have lmic running.
The HPDTek module is size and pin compatible with the common SX127x / RFM9x modules.
Those look like LoRa (only) examples, not LoRaWAN. I guess not lmic compatible but I don’t know.
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dc/dc + 18650 charger 3v and 5v out … handy cheap power solution for node
- buying battery’s in China is always a bit tricky
in this shop I found original NCR18650B - very good battery
Only thing on the workbench this week is me! So annoyed I had a clash that stopped me booking the Amsterdam trip. So relieved now that I didn’t as I wouldn’t have made it 
First hospital visit since 1977 so can’t complain, back to solder and flux fumes tomorrow!
I must compliment you all on top quality forum content (sanity fuel 
)
G
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’ solder and flux ’ that feeling home smell … book early for conference 2019 
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tnx… I’m a selfdescribed ‘ADHD electronic junk’ … but with a reason.
first I don’t have a day job and second I have had a stroke in 2002… a serious one, that damaged something.
so now I hear 24/7 ‘noise’ in my head… tweaking and electronics was my job when I was young so I picked that up again and discovered that when I.m programming/soldering I pay less attention to that noise.
I understand that for someone with little freetime, I must look like I am day and night at my workbench 
Also I really hope that other TTN’ers show what they are doing here… see it as a kind of ‘electronic’ pub, this is not my ‘private’ topic 
And the reason that I always post pictures is that I like that myself on other forums … makes topic more interesting imho.
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You should be on the TTN payroll!
Bouts of mild tinitis myself but intermittent and not a life changer. How coincidental I have a deep vein clot and some embolism in my lungs. No stroke, just a big scare!. No reason as I am a competitive swimmer and (for fun) triathlete, a mystery.
Hopefully not related to 60:40 solder and flux fumes!
G
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just now we have 30.000 lorawan frames transmitted on a single AA battery without missing one.
that says something about the quality of the TTN backend (and the rocketscream node ) and off course
the stability of MyDevices Cayenne.
big thank you factorylab for transporting the bulk of these packets. 
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Hi @BoRRoZ, no need for any kind of excuses from you! The viewing numbers for “your” workbench topic prove that.
Like @GryKyo, I also suffer from tinnitus. 40 years ago army training and exercising as artillery gun-crew has left me with continuous screeching that blots out all hearing from about 900Hz to about 1.3kHz. Most of the gun-crew men were completely deaf.
Like @BoRRoZ I use immersive engineering work to distract me from the noise.
Please continue with the good work on the workbench topic!
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thank you … I’m not alone
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Hold up there! Waaaay above my pay grade now!
But I concur, the catalyst for many on here I suspect, thanks.
G
- preparing a non scientific TTN join/signal comparison between
32U4 - DIYmall rfm95
32U4 - BSFRANCE hpd13A
328p - CH2I rfm95
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For the rak811? That should do the job 
Unfortunately we need an adapter for the breadboard adapter?!
the rows in the middle are 2.54 … so that fits in a breadboard
I understood and did that myself before (RAK811 breakout pinout) - but i dont’t like it!
RAK should have (optional) done this for us. Cant’t see the real benefit of the breakout board with 2mm pitch. Maybe i missed something.
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