Hyeonwoo | July 2, 2024

Works great.

For FlippenHeimer -Geiger Counter for the Flipper Zero

This is the first module for my flipper!
I used J321 tube instead because that's only one laying around.
Almost screwed up the pcb while soldering(rusty soldering iron damaged the pad on pcb)... but fortunately, it works!
And thanks for including the case for free.

p.s. I think it would be better if it had a button that switches between external buzzer and flipper's speaker.

Response from Erwin Ried | July 2, 2024

Hi! I though on not even adding the buzzer, but ended with the current design just thinking it was safer to have the "analog" buzzer since the flipper speaker relies on software, which might not be as safe (I am not saying this will save you from high radiation environments or something 😂, but conceptually). Great that you managed to make it work!

Guillaume | May 18, 2024

Best third party GPIO module for flipper zero

For Mayhem v2 for Flipper: ALL in 1- ESP/CAM/SD/NRF+CC

I received the Mayhem board in no time but I was unable to flash it as instructed, no matter what I tried. Erwin has been very responsive and helpful when I reached out for assistance : he didn't hesitate for a second and helped troubleshoot.

I didn't have a second flipper to test with, but I started suspecting something was not right with the device (rather than the board) when I tested the GPIO pins with a LED light.

I finally managed to convince Joom to reimburse me for what I suspected to be a defective flipper device. It took 5 months of back and forth emails with their support and ultimately, a PayPal claim for them to accept.

Long story short, I've since ordered a new flipper, and the Mayhem works great. As suspected, the flipper was the culprit.

The mayhem board is well designed and built and is one of the best GPIO module you can find for the flipper zero.

Response from Erwin Ried | May 20, 2024

Congrats on getting your broken flipper replaced! And thanks for sharing the journey.

James | May 7, 2024

The Mayhem

For Mayhem v1 for Flipper: Wifi/Camera/SD/NRF24-CC1101

Couldn’t be happier with this module I’ve flashed and downloaded the firmware added a micro sd another radio module and a separate antenna for each module and the esp-32cam . Great customer service and fast shipping in my experience. Thanks again will be back for more stuff.

Response from Erwin Ried | May 10, 2024

Thank you, James! I'm thrilled you're doing hacks on it 🤓

Bill | April 1, 2024

Hmmm

For Mayhem v1 for Flipper: Wifi/Camera/SD/NRF24-CC1101

No matter what I do with this board I cannot get it working. I gave reached out to the seller to no avail. I've followed his you tube and written instructions and it still doesn't work.
It looks excellent, the shipping was fast and it was well packaged but if it doesn't work its no good to me!

HELP!

Response from Erwin Ried | April 1, 2024

Hi! I'm sorry for the experience, can you write details of the issue via messages with your order number? If the unit was assembled/tested and somehow you got it broken I'll send you a new one or refund you right away

Maurizio | March 19, 2024

Grazie grazie!!

For FlippenHeimer -Geiger Counter for the Flipper Zero

The kit was a bit più tricky than I thought. I soldered one of the chips in reverse, which set me back a week on assembly. But when I contacted the seller, they were abbastanza cool to send me a new PCB. Now my Geiger counter works like a charm, and I'm super happy with it. I use it as a dice for boardgames to get truly random numbers 😂

Response from Erwin Ried | March 19, 2024

Great use! It's the ultimate in randomness – and radiation, but mostly randomness! 🧐