LoRa Cat Collar Overview: I'd like to make a tube collar for a cat with an Arduino Nano and LoRa module, and a handheld seeking device with an Arduino Nano and two LoRa modules. Radio pings determine the distance and direction to the cat, providing auditory feedback (piezo buzzer) to guide the user.…

It's confusing because the RA-01 has DIO0 which can be configured to do that and RA-01SC renames DIO0 to TXEN as an input. So I guess the RA-01SC can hopefully do what EmilyJane suggested over DIO1, and I need to take a walk and have a coffee! It's fun to think of an RF MCU where pulse->interrupt,…

The radio outputs may not like being wired together when one is high and the other is low. You may need to "OR" them with diodes.

You would have to elaborate. Okay, here's a sketch of what has been discussed up to this point. Hopefully this is nicer to look at than the Fritzring diagram (never again). Pretend that I wired D11,D12,D13 for yellow. Green: selection lines for SPI interface. Yellow: shared data lines for SPI in…

What happens if the radio wired to STOP gets the pulse before the one wired to START?

That's a good point. A JK flip flop might do?

[image] alegator3: A JK flip flop might do? I doubt it. But connecting the START and STOP pins together, and connecting them to both of the DI01 outputs might work, provided that the DI01 outputs are "OR"d together, and provided that the TDC ignores all pulses on the START pin after it start…

A JK flip flop with J and K always high will toggle pulses from CLK. Putting J and K on one line makes a T flip flop. Wiring the DIO1 outputs into the CLK of a T flip flop with T=1 should almost do the trick. However, the TDC expects pulses. Monostable multivibrators can generate pulses. Looks li…

This is getting beyond me. Good luck with your project. Edit to add: please keep us posted

The biggest issue i think you will have is weight because of the power you require. I would suggest a 3.3v microcontroller. Perhaps you could use a low AH single cell lithium polymer battery. Put the dw1000 and micrcontroller in sleep mode and wake every second or so to send a packet You will als…

A little update, I got around to placing my shipping order for the MCUs, LoRa modules, antennas, and some cheap batteries. It turned out quite a bit cheaper to order from China so I'll give another update in a few weeks - plenty of other things to build in the meantime! I also spent some time selec…

LoRa/UWB Cat Collar

Projects General Guidance

DaveEvans July 12, 2024, 5:05am 73

Lots of good SMD soldering hints from @LarryD in this thread. Scroll down to SMD....

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LoRa/UWB Cat Collar

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