The WORKBENCH part 3





Why a manufacturer of a Chinese fitness wristband / app needs access to my phones camera / contacts / mail / sms ect beats me…
I don’t work at a secret militairy location . my LAB is only a little bit secret :rofl:

(Jeff Uk) #186

Rather than using/polluting my phone I ended up synching to a spare iPad with no such data on it! :wink:

Had mine for ~2.5 weeks now and am getting 6-7 days per charge ~inline with spec :slight_smile: works well but reading in daylight a challenge and pain having to step forward in menu/options with no chance to go back if going one step too far…otherwise for ~£13 cant complain! :smile:


agree :wink:



Now what are you up to?



’ Do You Want a Receipt for Your Packets ? ’ … :sunglasses:

arduino uno code
 ttnlogo on GOOJPRT QR701 58mm Mini Embedded Receipt Thermal Printer TTL
-power from a separate supply min 5-9v - 2 A !

BMP to .h converter howto :

#include "Adafruit_Thermal.h"
#include "ttnlogo.h"

#include "SoftwareSerial.h"

#define TX_PIN 5 // Arduino transmit  blue   
#define RX_PIN 6 // Arduino receive   yellow

SoftwareSerial mySerial(RX_PIN, TX_PIN); 
Adafruit_Thermal printer(&mySerial);     

void setup() {

  printer.printBitmap(ttnlogo_width, ttnlogo_height, ttnlogo_data);

void loop() {


I’m using cheap ‘drone’ parts for a non-drone LoRaWAN POC… general nerdism :wink:
it’s for a wireless streaming video analyses with RPI that triggers a loramodule - experiment, waiting for receiver



I did a project earlier with a RPi and tensor flow, worked nicely. Trained it for traffic outside, it could see the difference between bikes, cars, trucks. How do you plan to feed the analogue video from the receiver to the pi for analysis? Is that possible?


I ordered this receiver and found online that it works on RPI… works as a webcam then, but wireless

there is a lot of this material , I’m not a drone pilot So I don’t know what’s good or bad…its a gamble :roll_eyes:
transmitters -
cameras -


for the Tx side I ordered this video pal camera + 5.8 transmitter



Ah a receiver with usb out. Interesting! That could work indeed.

(Remko) #194

Soldering the SMD components of the shield for the IoT class node with a cooker. Never before I have soldered SMD so nicely.


brilliant… and now, how to implement that with ‘leftover’ wires pieces :thinking:




progress ! :smile: drilled a few holes for the senior citizen booksized ridgid google assistant


and to make it more ridgid I ordered a few of these
Rubber Clear Table Desk Corner Edge Guard Cushion Baby Safe Protectors :stuck_out_tongue_winking_eye:



huh… just playing a bit and testing if the TTIG is back online.
with a setup taped to my PC with a 3dbi antenna indoors

So I transmit a 3 byte payload at 20 db SF12 and got metadata from nine gateways back.

One 43 km away… is there something in the air tonight ?
I’ve 'seen :

Croeselaan - Utrecht
Betaplein - Leiden
Eschertoren - Leiden
all from Zwijndrecht (near Rotterdam)

  • checked today after a coffee , seems I’ve forgot to set the power output, So maybe that’s why :roll_eyes:

(Jeff Uk) #198

:thinking: Hummm - 23db(m) EIRP? major breach of EU regs!..who do I report you to?! :grinning:


LTH5200 OTAA on TTN - testing

(Jeff Uk) #200

Next batch of 5205’s just arrived…mix of SMA & iPX, along with samples of the new housings for test - with & without Solar panel…competition for the ‘Nut’ tins! :wink:

Along with 2 more RAK Fibre Glass Antenna’s for upgrading a couple of the TTN deployed gateways from indoor to outdoor use to improve coverage & range :tada:



I’m curious what your impression is of that new RAK outdoor gateway Jeff :sunglasses:

and who are your clients… what are their use cases,can you elaborate a bit
* I just realise… maybe all these sensors and gateways are for your own house and garden :wink:

(Jezd) #202

Didn’t their fibre glass antenna get terrible results when tested?

(Tony Smith) #203

I tested a 915MHz yesterday and it was very good. VSWR was around 1.2 and centred on 915MHz. Will be testing against a few others in near future