Just picked up an outdoor timer with this same ESP32 in it. Did anyone figure out how to flash it or successfully replace it with an unlocked one?
Interesting thread, and Ive been following these ideas for a couple weeks now that Ive ādiscoveredā HA and the āratgdoā based on ESP32.
Curious if anyone has thought about just replacing the chip on the module itself? Seems the base chip is a couple bucks and with a hot-air gun once could simply float it off and replace the thing - that should eliminate the eFuse issue. While I havenāt gone down this path myself (I simply dont have some of the equipment at the moment), I did take a similar route several years back when I crossed 5v and 12 rails on a power supply - blowing up several hard drives in the processā¦ its really scary with tens of TBās data on the line - but having a buddy that had the necessary tools was a lifesaver).In short, floating ROMās off controller boards onto a donor boardā¦ seems this would be very similar.
I have a few of the Home Depot āHubspaceā products (great for outdoor Christmas light switching), but havenāt wasted much time as I only use them a few weeks per yearā¦ but it seems like something worth fooling with.
Thoughts?
Which ESP will replace this one? Donāt see any links to buy a LA02301 on Google.
I love those bulbs, but they are controlled by hubspace. I wonder if they can be flashed. I have to research and see.
https://www.homedepot.com/p/EcoSmart-60-Watt-Equivalent-Smart-A19-Clear-Color-Changing-CEC-LED-Light-Bulb-with-Voice-Control-1-Bulb-Powered-by-Hubspace-12CFA1960WRGB01/326010996
The FCC Report on my favorite bulbs is at
internal sample photos here
Hi so after reading this thread i decided to pull the stock moduel and drop in an esp32 board. flashed with wled.
It mostly works with one odd thin.
the whites are weird and i am wondering if anyone has done this before to know the protocol / what i should change.
pwm on the warm white works normal but i dont seem to get cool white. one way i can get cool white is to check the invert output box.
I will get bright white but warm no longer works.
using RGB+CCT pwm
Hi @arcturus01, that sounds promising! anything you can share?
- did you work on the downlight? as in this picture above?
- where did you connect your board to the PCB? At the pins on the main PCB or on the to of the daughterboard?
- where you able to reassemble and fit everything in with the esp board?
- any resolution on the warm light?
Iāve been meaning to thinker with this for a while, I bought an extra unit to experiment with, curious to hear about your experience
Iāve done some work on injecting an OTA update by creating a fake wifi network and dns server and sniffing and recreating the servers it talks to. If TLS fails, it tries to download a root certificate over http. Thatās as far as I got. I deliver it my own root cert, but it doesnāt seem to accept it. Is it possible thereād be useful logs output on serial? Iām more software oriented than hardware if its not obvious.
I have a few different Hubspace devices that I picked up on clearance but shelved a while back when I found they werenāt flashable. Got around to replacing the esp IC on the module (ESP32-U4WDH) tonight. Fairly simple after ripping the metal shield off.
After replacement, I was able to flash my own esphome FW to the module. You will need to note the pin to ground based on the pin mapping table in the FCC document to enter flashing mode (IO5 for me).
Did you ever get this working?
I would also love to know what you ended up dropping in. Im assuming you pulled out the whole ledaarson module and not just the little esp32 chip inside correct? What board did you replace it with? did you just solder wires onto the pads and connect the new esp32 board that way? Have a bunch of hubspace smart bollard lights that i want to try to do this with. Tried everything like everyone else ot flash itā¦ efuses must be burnt. THanks!
Cool work. So you removed the metal shield on the module and replaced the esp32 chip inside with a new one? So the ledarrson module is still there you just replaced the esp32 inside that module? I have a hot air gun but ive never done anything like this beforeā¦ no better time to learn. Is this super complicated to do? Didnt sound like it by your message but youāre likely way more expereienced in this that me :). Any insights would be really appreciatedā¦thanks!
I just swapped the u4wdh chip on my motion dimmer switch. It was more difficult than i expected but i am working with subpar equipment so that doesnt help!
My next step is figuring out how to flash it. I have flashed esp32s many times but they were always prototype boards with an integrated usb port.
What device specifically did you swap chips on?
Would you mind sharing your esphome config? Would help tremendously
Thatās correct. The metal shield comes off with some hot air without too much work. This was my first chip type swap with hot air, although Iād done significant soldering before. I didnāt find it too difficult for the couple I swapped.