I have a water heater with a wireless transmitter for changing the temp, how can I sniff the commands sent between them?

Long story short I’m automating a lot of my stuff at home and as part of that I’d like to be able to replicate the commands sent to my unit (https://www.rinnai.com.au/wp-content/uploads/2017/09/mc_503rc_operating_instructions.pdf) so I can then use them in automations to automatically adjust the temperature based on certain factors.

I did something similar with my ducted aircon, but they have an iphone app and an API so I was able to use Charles as a http proxy to see what the commands were.

Is this possible?

Thanks!

Ipod classic + kokkia Bluetooth transmitter paired to earbuds

If I use an ipod classic 6th or 7th generation and the following transmitter:

http://store.kokkia.com/i10stinybluetoothipodtransmitterforipodiphoneipaditouchwithtrueappleauthenticationremotecontrolsandl.aspx. ;

Paired to earbuds, would I be secure? If I go in my basement where I’m surrounded by concrete and pair the iPod and ear buds, would I be extra secure?

I’ve spent a few hours researching, somewhere I read the transmitter uses 1 of 4 codes that resemble 00000 and 24564 and two other sets of numbers… If the pairing codes are restricted to four options could a frat-ority/ computer science major plant a signal booster/ antenna within the 30ft radius of signal range and basically hack the signal and intercept/evesdrop my listening? Please critique my potential system and explain why it’s absolutely secure or not? Would a NFC system be better/more secure?

How long is the range of Canon ST-E2 speedlite transmitter in practice?

I just ordered a used but working Canon ST-E2 speedlite transmitter because it was so cheap that it cost practically nothing. However, the ST-E2 hasn’t arrived yet. My flash has support for ST-E3-RT as well. My camera doesn’t have the “easy wireless” flash, meaning ST-E2 is necessary for this camera model.

How long is the range of a Canon ST-E2 transmitter in practice (not in optimal conditions)? I understand that it uses infrared. Is the infrared so powerful that it can bounce off walls indoors? How about outdoor shooting, does a ST-E2 work well outdoors?

Does ST-E2 require line of sight when shooting outdoors? If a flash is situated behind the camera in outdoor conditions, will it trigger? If not, is it possible to put some kind of reflector (umbrella?) in front of the camera but still outside the field of view to bounce infrared backwards?

At least my Canon flash has the sensor in the front, but fortunately the head turns 180 degrees, so I can always position the sensor in such a manner that it’s facing the camera.

The reason I’m wondering is that I ordered a new ST-E3-RT which is taking quite long to arrive (the shop where I ordered it from still doesn’t have the product, and it will take 2 weeks for them to have it in stock), before finding the used ST-E2. If it seems ST-E2 is enough for most conditions, I could cancel the ST-E3-RT order the cost of which is approximately 5 times the cost of a used ST-E2.

Apparently, professional photographers used infrared triggers for a long amount of time until Canon created a radio based system, so it can’t really be that bad, right?

As another benefit of ST-E2 apart from the price, it works with older Canon equipment, meaning I can order used flashes which are quite decently priced when compared to new Canon flashes. As third benefit, it saves 50 grams of weight compared to the radio model.

Why doesn’t my Pixel King transmitter activate my Canon flash in “Multi” mode?

I have a question about stroboscopic flash. I’m working with a Canon Mark IV, Canon 600Ex-rt flash, and Pixel King transmitter and receiver.

I have played around with the flash on camera and it works just fine, but when I try to use it off camera, my camera will not let me select MULTI mode. Instead, it automatically goes back into Manual (the flash is set to MULTI).

Not sure what I’m doing wrong, and I’d appreciate any help because I’m starting to drive myself nuts!

Can one YN600EX-RT II act as a transmitter only for another YN600EX-RT II?

Can a Yongnuo flash YN600EX-RT II mounted on a Canon 5D Mark iv (or any canon camera for that matter), trigger another YN600EX-RT II mounted on another tripod, without triggering its own flash ? (need only the tripod mounted flash to get triggered. This is for a particular situation, and i don’t want to spend money on a stand-alone transmitter only)

Can someone who has 2 of these YN600EX-RT II please check and confirm, before i make the purchase ?

Microphone not working when connected to Bluetooth FM transmitter


When connected to my FM transmitter, I am able to hear audio from calls but they can hardly hear me.

Similarly, if I want to use Google Assistant, I have to shout. I believe the issue is that a microphone on the transmitter is being used as opposed to the microphone on my phone, and this microphone is bad. However, this has always been an issue, even when the device was new 3 years ago.

I can’t seem to find info on the exact model of transmitter that I have, but this was the title on Amazon: Car FM Transmitter W 2.4A USB Charger, Nulaxy™ 2015 Newest Wireless Bluetooth FM Transmitter Car Kit for All Smartphones, Tablets, MP3 Players Sold by: DinoSonics

It seems like there should be a setting for choosing which microphone to use when connected to a Bluetooth device, but this doesn’t appear to be an option. For reference, I am currently using a Pixel 3, however the same issue was present with a Pixel 2, Droid Turbo 2, and Galaxy S5, obviously on many versions of Android. If this is the wrong board to ask this question or if any more information is needed, let me know.

Universal wireless radio transmitter that can trigger Elinchrom studio strobes, Yongnuo speedlites and Godox flash

I have a pair of Elinchrom D-Lite-2 IT 200Ws studio strobes. The strobes have built-In Skyport wireless receivers and the set came with a Elinchrom Skyport ECO transmitter. This transmitter broke during my latest photoshoot so I am in the market for a new transmitter.

I also have two Yongnuo YN600EX-RT II Speedlites which have built-in receivers compatible with Canon’s 2.4 GHz radio flash trigger system and E-TTL / E-TTL II metering and a Yongnuo YN-E3-RT Speedlite transmitter.

In the near future, I might also buy a Godox AD200 flash.

I’m searching for a universal wireless radio transmitter that can trigger all these different branded studio strobes and flashes from a Canon 6D camera.

What my research has learned already:

Elinchrom Transmitter PRO

The Elinchrom Transmitter PRO is compatible with the three previous generations of flash units (including the EL-Skyport Transceiver RX module for Style RX, Digitial RX, and Ranger RX systems, the integrated EL-Skyport modules for D-Lite RX, BRX, ELC Pro HD and ELB series.).

I have the non-RX version of the D-lite kit, so not completely sure if this is compatible. No word on compatibility with the Yongnuo and Godox flashes.

Radiopopper JrX

The JrX Transmitter is compatible with any camera body with a standard hotshoe. The JrX Receiver is compatible with most all studio strobes and handheld flashes with appropriate sync cable. JrX Receivers are shipped with 3.5mm cable, 2.5mm and 1/4 inch sync adapters.

This seems to be compatible with my setup, but it seems that I would need to buy separate receiver units for my strobes and flashes, even though they have built-in receivers.


Any suggestion what would be the best transmitter for my use case? I’m open to use other brands or models than the transmitters listed above.