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[BL602L20] LED RGB Strip (Magic Home)

Svetlaya 3867 11
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  • [BL602L20] LED RGB Strip (Magic Home)

    printed circuit board
    [BL602L20] LED RGB Strip (Magic Home) [BL602L20] LED RGB Strip (Magic Home)

    Preparation. Soldering
    [BL602L20] LED RGB Strip (Magic Home)

    connect to TTL. Additional power is not required, we take with TTL 3.3 volts.

    buy TTL on Aliexpress
    [BL602L20] LED RGB Strip (Magic Home)

    [BL602L20] LED RGB Strip (Magic Home)

    To enter the BL602 into programming mode, it is necessary to connect the boot output through a 10k resistor to the positive before power is applied. After the firmware, the jumper must be removed.
    [BL602L20] LED RGB Strip (Magic Home)

    Download the full project (800+ megabytes) and unpack.
    I reduced the archive by removing everything that is not needed within the framework of this article and added the OpenBL602_1.15.406.bin firmware.
    Smoll package. The total volume of the archive turned out to be 33MB. BL602.zip

    Spoiler:
    Download firmware for BL602
    Screenshot showing a table with information about the file OpenBL602_1.15.406.bin listed under columns BL602 and UART Flash.


    Connect TTL to your computer before running the utility. The firmware utility does not know how to update the state of the ports. Tested on two different computers under win10.

    Launching the firmware utility
    [BL602L20] LED RGB Strip (Magic Home)
    [BL602L20] LED RGB Strip (Magic Home)
    [BL602L20] LED RGB Strip (Magic Home)
    Click "Create and Download" while waiting for the download to complete.

    After loading, you need to disconnect the TTL converter from our device (RGB controller), disconnect the boot from 3.3v. Apply regular power to the device.
    [BL602L20] LED RGB Strip (Magic Home)

    Open any device and see available Wi-Fi networks. There should be a network starting with OpenBL602_
    [BL602L20] LED RGB Strip (Magic Home)

    We connect to the network. If you do this from an android, a message will pop up at the top, clicking on which will automatically open the address http://192.168.4.1 for initial setup. In any other case, we open ourselves.
    [BL602L20] LED RGB Strip (Magic Home)

    This is the first window that popped up for me. Click on "Return to menu"
    [BL602L20] LED RGB Strip (Magic Home)

    Main menu. Click "Config", then "Configure WiFi"
    [BL602L20] LED RGB Strip (Magic Home) [BL602L20] LED RGB Strip (Magic Home)

    Setting up your home network (WiFi)
    [BL602L20] LED RGB Strip (Magic Home)

    Reboot. I have "lost". I had to turn the power off/on.
    Set up shim ports. The description was taken from the developer's project, p.kaczmarek2. The device differs only in the presence of an IR port, which I do not have.

    [BL602L20] LED RGB Strip (Magic Home)
    [BL602L20] LED RGB Strip (Magic Home)
    [BL602L20] LED RGB Strip (Magic Home)

    I am grateful to:
    developer - p.kaczmarek2
    Great lazy person - 🌽 Great Corn🌽, your laziness is truly contagious!


    Russian full version

    Cool? Ranking DIY
    About Author
    Svetlaya
    Level 4  
    Offline 
    Строю умный дом на платформе MajorDoMo
    Svetlaya wrote 11 posts with rating 2, helped 1 times. Live in city MSK. Been with us since 2023 year.
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  • Helpful post
    #2 20426518
    p.kaczmarek2
    Moderator Smart Home  
    Very nice presentation.
    It is also worth to note that you can do OTA here:
    [BL602L20] LED RGB Strip (Magic Home)
    Screenshot of the OTA interface for chipset BL602 with update options.
    OTA file is now released here:
    https://github.com/openshwprojects/OpenBK7231T_App/releases/
    So you can remotely update the device.

    Dodano po 51 [minuty]:

    Btw @Svetlaya instructions are here in video form:
    https://www.youtube.com/@elektrodacom
    Helpful post? Buy me a coffee.
  • #3 20963581
    bmarchais
    Level 5  
    Hey,

    Thanks for the work !
    On my side I try to flash my RGB controller following your instructions, but I have an error when I try to flash the chip (button "Create & Download"). My wiring are good and I also have the 10kOmh between boot and 3v3 pin.
    Screenshot of the Bouffalo Lab Dev Cube application showing a chip flashing error.

    Any ideas ? :)
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  • #4 20963757
    p.kaczmarek2
    Moderator Smart Home  
    "BFLB FLASH ID NOT SUPPORT" ? What kind of chip do you have? How does it look like?
    Helpful post? Buy me a coffee.
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  • #5 20963862
    divadiow
    Level 34  
    there are more references to ef4015 in BLDevCube 1.8.8 than there are in the old 1.4.8. so maybe supported in newer. or config files from newer can be used in 1.4.8?

    Search results of references to ef4015 in various files in BLDevCube v1.8.8.

    vs

    Screenshot of search results showing configuration files with references to ef4015.
  • #6 20963900
    bmarchais
    Level 5  
    >>20963757
    It’s the BL602
    Printed circuit board with a BL602 chip.

    Added after 47 [seconds]:

    >>20963862
    Do you have the sourcefile for the new version 1.8 ?
  • #7 20963903
    p.kaczmarek2
    Moderator Smart Home  
    Strange, they have changed internal flash memory but left marking the same. Try the new tool as @divadiow said
    Helpful post? Buy me a coffee.
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  • #9 20980673
    bmarchais
    Level 5  
    Hey all,

    Using the last version (1.8.9) it works fine for uploading the image. However, I'm stuck at the connection step to my router. I try several times and by parsing the serial log, the chip reports me error on association :
    https://pastebin.com/im12K8ZP
    Code: text Expand Select all Copy to clipboard
    
Info:MAIN:Time 4, idle 0/s, free 104472, MQTT 0(0), bWifi 0, secondsWithNoPing -1, socks 2/21
----- BUG FIXME? NOT do STA enable again
[WF] MM_ADD_IF_REQ Sending: STA
▒td_start idx=0
[WF] MM_ADD_IF_REQ Done
[WF] vif_index from LAMC is 0
[WF][SM] Entering idle state
[WF][SM] Action Connect
           ssid IOT_XXX
           ssid len 12
           psk XXX
           psk len 8
           pmk
           pmk len 0
           channel band 0
           channel freq 0
           mac 00:00:00:00:00:00
           dhcp status: true
[WF][SM] State Action ###idle### --->>> ###connecting###
connecting using vif_idx 0
===start sm_get_bss_params===
bssid[0] = 0xffff
bssid[1] = 0xffff
bssid[2] = 0xffff
search ssid = IOT_XXX
result ssid index = -1
===end sm_get_bss_params===
[WF][SM] Entering connecting state
[APP] [EVT] Connecting 5710
[APP] [EVT] Connecting 5710
Info:MAIN:Time 5, idle 0/s, free 104472, MQTT 0(0), bWifi 0, secondsWithNoPing -1, socks 2/21
Info:MAIN:Main_OnWiFiStatusChange - WIFI_STA_CONNECTING - 1
Info:MAIN:Time 6, idle 0/s, free 102432, MQTT 0(0), bWifi 0, secondsWithNoPing -1, socks 2/21
Info:MAIN:Time 7, idle 0/s, free 102432, MQTT 0(0), bWifi 0, secondsWithNoPing -1, socks 2/21
Probe Response
timestamp = 0x347ef5ffa75
Info:MAIN:Time 8, idle 0/s, free 102432, MQTT 0(0), bWifi 0, secondsWithNoPing -1, socks 2/21
===start sm_get_bss_params===
bssid[0] = 0xffff
bssid[1] = 0xffff
bssid[2] = 0xffff
search ssid = IOT_XXX
result ssid index = 0
===end sm_get_bss_params===
wpa2/wpa3 pairwise ccmp:1,tkip:0,wep104:0,wep:40:0
wpa2/wpa3 group ccmp:1,tkip:0,wep104:0,wep:40:0
wpa2/wpa3 is_pmf_required:1
AP Security mode: wep:0,wpa:0,wpa2:1,wpa3:1
wpa2/wpa3 pairwise ccmp:1,tkip:0,wep104:0,wep:40:0
wpa2/wpa3 group ccmp:1,tkip:0,wep104:0,wep:40:0
wpa2/wpa3 is_pmf_required:1
AP Security mode: wep:0,wpa:0,wpa2:1,wpa3:1
Probe Response
timestamp = 0x347ef7354e1
------ 247 set default key 0x4201dad0, key ptr 0x00000000
[APP] [EVT] SCAN On Join 9481
[APP] [EVT] Unknown code 10, 9481
Association failure, Wlan802.11 status code = 53
ind ix 0x4202a344, chan_ctxt is 0x4201ee68
connect failure, ssid = IOT_XXX, index = 0
from sm_connect_ind to scanu_rm_exist_ssid
[RX] Connection Status
[RX]   status_code 5
[RX]   connect result: Association failure
[RX]   MAC 82:ED:00:CD:50:83
[RX]   vif_idx 0
[RX]   ap_idx 0
[RX]   ch_idx 0
[RX]   qos 1
[RX]   acm 0
[RX]   assoc_req_ie_len 95
[RX]   assoc_rsp_ie_len 0
[RX]   aid 0
[RX]   band 0
[RX]   center_freq 2452
[RX]   width 0
[RX]   center_freq1 2452
[RX]   center_freq2 0
[WF][SM] Exiting connecting state
[WF][SM] State Action ###connecting### --->>> ###disconnect###
[WF][SM] Entering disconnect state
[WF][SM] Will retry in 2000 ticks
[APP] [EVT] disconnect 9505, Reason: Association failure
[APP] [EVT] disconnect 9506
Info:MAIN:Main_OnWiFiStatusChange - WIFI_STA_DISCONNECTED - 2
Info:MAIN:Time 9, idle 0/s, free 104432, MQTT 0(0), bWifi 0, secondsWithNoPing -1, socks 2/21
Info:MAIN:Time 10, idle 0/s, free 104432, MQTT 0(0), bWifi 0, secondsWithNoPing -1, socks 2/21
[WF][PF] Using profile, idx is @0
[WF][SM] Retry Again --->>> retry connect
[WF][SM] Exiting disconnect state
Delete Timer.
[WF][SM] State Action ###disconnect### --->>> ###connecting###
[WF][SM]  Action Connect
           ssid IOT_XXX
           ssid len 12
           psk XXX
           psk len 8
           pmk
           pmk len 0
           mac 00:00:00:00:00:00
connecting using vif_idx 0
===start sm_get_bss_params===
bssid[0] = 0xffff
bssid[1] = 0xffff
bssid[2] = 0xffff
search ssid = IOT_XXX
result ssid index = -1
===end sm_get_bss_params===
[WF][SM] Entering connecting state
[APP] [EVT] Reconnect 11509
[APP] [EVT] Reconnect 11509


    Any idea ?

    Thanks !
  • #10 20981845
    p.kaczmarek2
    Moderator Smart Home  
    I haven't encountered this particular issue myself yet, but I have seen reports saying that it is sometimes worth to try with another router. Can you check if the problem persists with other WiFi networks as well?
    Helpful post? Buy me a coffee.
  • #11 20989839
    bmarchais
    Level 5  
    Hey,

    Sorry for the delay, I was not at home.
    I tested using a different router and it's works. So I try again with my main router (capable of wifi 6), and still nothing. I changed the security protocol in my IoT network from WPA3+WPA2-PSK to WPA2-PSK+WPA-PSK and it finally works ! I believe it's using the WPA security and not the more recent one.

    Thanks for all your answers. Really appreciate this open source firmware in order to maintain close IoT device and to not depend on cloud services :)

    Update: I have to update to the latest version (1.17.492) in order to make the connection between this device and homeassistant works
  • #12 20989973
    p.kaczmarek2
    Moderator Smart Home  
    So it was a router issue. Well, good to hear it's solved. Let me know if you have any futher questions.
    Helpful post? Buy me a coffee.
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Topic summary

The discussion revolves around the BL602L20 LED RGB Strip, specifically focusing on programming and flashing the device. Users share experiences with connecting the BL602 to TTL power (3.3V) and entering programming mode by connecting the boot output through a 10k resistor. Issues encountered include errors during flashing, such as "BFLB FLASH ID NOT SUPPORT," and difficulties connecting to Wi-Fi networks. Solutions suggested include using different routers and adjusting security protocols from WPA3 to WPA2-PSK. Users also mention the availability of OTA updates and the importance of using the latest firmware versions for compatibility with home automation systems like Home Assistant.
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