Smart socket from AliExpress, no TX1/RX1 leads, BK7252N flashing
Good morning.
Socket smart from Ali cheap (£9.5) and a great mine, but probably the latest
Under the T34 chip the TX1/RX1 signals are not routed anywhere, no approach from the side. Only pulling off the circuit or scraping. With the previous WB2S there was no problem. It's impossible to tell what you're buying from the chassis auction photos.
As I am doing this purely as a hobbyist, it looks like what it looks like.
I managed to rip the backup (below as someone would need) and upload the new firmware, but relied on soldering back in. With 2 I'll wait until it can be done over Wi-Fi.
Read/write as BK7231N
Socket smart from Ali cheap (£9.5) and a great mine, but probably the latest
Under the T34 chip the TX1/RX1 signals are not routed anywhere, no approach from the side. Only pulling off the circuit or scraping. With the previous WB2S there was no problem. It's impossible to tell what you're buying from the chassis auction photos.
As I am doing this purely as a hobbyist, it looks like what it looks like.
I managed to rip the backup (below as someone would need) and upload the new firmware, but relied on soldering back in. With 2 I'll wait until it can be done over Wi-Fi.
Read/write as BK7231N
Spoiler:
{
"sel_pin_pin": "8",
"rl1_lv": "1",
"bt1_pin": "28",
"on_off_cnt": "10",
"onoff_rst_m": "0",
"onoff_clear_t":"10",
"rand_dpid": "42",
"net_trig": "4",
"netled1_lv": "1",
"jv": "110.0.3",
"onoff_rst_type":"2",
"ffc_select": "2",
"total_bt_pin": "26",
"key_rst_en": "1",
"nety_led": "1",
"vi_pin": "7",
"over_cur": "30000",
"resistor": "1",
"total_stat": "2",
"bt1_lv": "0",
"reset_t": "5",
"netled1_pin": "24",
"chip_type": "0",
"lose_vol": "90",
"remote_add_dp":"49",
"remote_list_dp":"50",
"net_type": "0",
"over_vol": "250",
"inch_dp": "44",
"module": "T34",
"ele_pin": "6",
"ch_cddpid1": "9",
"ble_pair_time":"30",
"init_conf": "38",
"zero_select": "0",
"onoff_type": "2",
"series_ctrl": "2",
"bt_self_type": "0",
"total_bt_lv": "0",
"cyc_dpid": "43",
"ch_num": "1",
"rl1_pin": "14",
"netn_led": "0",
"vol_def": "0",
"ch_dpid1": "1",
"sel_pin_lv": "1",
"crc": "55"
}
Device configuration, as extracted from Tuya:
- BL0937 SEL on P8
- Button (channel 1) on P28
- Pair/Toggle All Button on P26
- BL0937 VI (CF1) on P7
- WiFi LED on P24
- BL0937 ELE (CF) on P6
- Relay (channel 1) on P14
Device seems to be using T34 module,
"sel_pin_pin": "8",
"rl1_lv": "1",
"bt1_pin": "28",
"on_off_cnt": "10",
"onoff_rst_m": "0",
"onoff_clear_t":"10",
"rand_dpid": "42",
"net_trig": "4",
"netled1_lv": "1",
"jv": "110.0.3",
"onoff_rst_type":"2",
"ffc_select": "2",
"total_bt_pin": "26",
"key_rst_en": "1",
"nety_led": "1",
"vi_pin": "7",
"over_cur": "30000",
"resistor": "1",
"total_stat": "2",
"bt1_lv": "0",
"reset_t": "5",
"netled1_pin": "24",
"chip_type": "0",
"lose_vol": "90",
"remote_add_dp":"49",
"remote_list_dp":"50",
"net_type": "0",
"over_vol": "250",
"inch_dp": "44",
"module": "T34",
"ele_pin": "6",
"ch_cddpid1": "9",
"ble_pair_time":"30",
"init_conf": "38",
"zero_select": "0",
"onoff_type": "2",
"series_ctrl": "2",
"bt_self_type": "0",
"total_bt_lv": "0",
"cyc_dpid": "43",
"ch_num": "1",
"rl1_pin": "14",
"netn_led": "0",
"vol_def": "0",
"ch_dpid1": "1",
"sel_pin_lv": "1",
"crc": "55"
}
Device configuration, as extracted from Tuya:
- BL0937 SEL on P8
- Button (channel 1) on P28
- Pair/Toggle All Button on P26
- BL0937 VI (CF1) on P7
- WiFi LED on P24
- BL0937 ELE (CF) on P6
- Relay (channel 1) on P14
Device seems to be using T34 module,
Moderated By p.kaczmarek2:
One minor note - the T34 is a BK7231N, not a BK7252. It's important not to get this wrong, because if you load the wrong batch the module won't start.
piotr.ino26 wrote 62 posts with
rating 6 .
Live in city Inowrocław.
Been with us since 2006 year.
Comments
Thanks for the presentation. I also added this plug to my purchases by the way - it was supposed to be for Christmas tree lights, I opened it and threw it in the corner. Cool that you managed to upload,... [Read more]
Welcome. I now have a conundrum. Have I relied on soldering or uploaded the wrong batch? I considered that it was left reading BK7252N (T4) is such a batch (OpenBK7252N_QIO_1.18.225) I uploaded BK7231Flasher.... [Read more]
T34 should be flashed as BK7231N (T2) Maybe the confusion came from 'T34' being the designation on the chip in your device? T1, T2, T3, T4 are newer Tuya designations for various Beken chips. I... [Read more]
1m USB extension cable, 15cm cable to the programmer, powering the chip from the power supply. Something to change? [Read more]
The error message looks a bit strange, the T34 has no other keys. Maybe it really is a communication error. I always shorten the wires as much as possible. The second socket works? So it worked after... [Read more]
https://obrazki.elektroda.pl/4644222800_1765356202_thumb.jpg CP2102 from Ali + 3.3 V from power supply, and it only gives 2.4 V from USB. 1 socket died from an impression :) after an encounter... [Read more]
I haven't even tested this CP2102 , good to know it works. Keep that other socket, it might come in handy as a parts donor. The capacitors there wear out quickly. Turn on PowerSave 1 in the OBK to extend... [Read more]
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