I think we are just talking about the same object, but each with a different name 
As long as you can insert a multiple pin headers that fit, it will work. Whatever precise connector type it is.
1 Like
Agreed - I was questioning the JST because you need a crimping tool for the cables whereas you can just use dupont cables (jumper cables) with pin headers (sockets):
That's it, we are talking about the same thing. What I had in mind was a shrouded pin header, despite I don't know why a shrouded one would be better 
A single line pin header would just be fine. Happy soldering (or not).
Thank you all for various tips! I'm planing on soldering pins that I took out of the male end of a jumper cable. I tore the plastic part out to get the pin. I have quite a few of them, so I don't have to buy anything.
I had thought that I could get away with soldering, but if stable contact does play an important role, I guess it's good to solder... I do have tools for it. Only, I don't have dupont pins, but I guess male jacks would do...
Now, I soldered some pins (from male jack of jumper cables), the connection seems OK. I discovered a few things: there are two contradictory instructions about setting the voltage, and I had followed the wrong one: i.e. I was supposedly setting it 5V. But, I checked the voltage, and it wasn't even 4V. This adapter is 3.3V without any shorting of pins. Now, I checked the voltage, and one of Tx or Rx got about 3.3V, but the other one got only about 2.5V.
Nonetheless, with turning on and off and messing around, I got the following: sorry, it's long!
albertus:dev johanna$ sudo cu -l /dev/cu.usbserial-1410 -s 115200
Connected.
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??SW?ѥ?g kY.??...C?H?? 0.000000] Li?ux?version 4.14.80 ?hs?uilder@buildbox0?) ?gcc version 7.3.? (?penWrt GCC 7.3.0?63?06e62839bfb80a44?17?6cbd4a285d672ea7?))?#0 Mon Mar 4 13:?1:?9 2019
[ ? ?.000000] bootcon?ol? [early0] enable?
?[ 0.?00?00] SoC: Qualcom? A?heros QCA9558 ve? 1?rev 0
[ ? 0?000000] Determin?d ?hysical RAM map:?
[ 0.00000?] ?memory: 04000000?@ ?0000000 (usable)?
[ 0.000000] ?ni?rd not found or ?mp?y ? disabling in?tr?
[ ? ?.000000] Primary?in?truction cache 6?kB? VIPT, 4-way, li?es?ze 32 bytes.
[ 0.000000] P?im?ry data cache 32?B,?4-way, VIPT, cac?e ?liases, linesize?32?bytes
?[ 0.000000] M?va?le zone start fo? e?ch node?0-?x0000000003fffff?]
[ 0.?00?00] Early memory?no?e ranges
? ? 0.000000] nod? ?0: [mem 0x000000?00?000000-0x0000000?03?fffff]
[ ? 0.000000] Init?em?setup node 0 [me? 0?00?0000000000000-0x?00?000003ffffff]
[ 0.000?00? r?ndom: get_random?by?es called from s?ar?_kernel+0x8c/0x4?4 ?ith?[ 0.00000?] ?uilt 1 zonelists? m?bility grouping ?n.? Total pages: 16?56?
[ 0.00?00?] Kernel command?li?e: board=TL-WR1?43?D-v2 console=tt?S0?115200 roo?[ 0.000000] D?nt?y cache hash tab?e ?ntries: 8192 (or?er? 3, 32768 bytes)?
? 0.000000] In?de?cache hash table?en?ries: 4096 (orde?: ?, 16384 bytes)
[ ? 0.000000] Writ?ng?ErrCtl register=?00?0000
[ 0.000?00? R?adback ErrCtl re?is?er=00000000
[? ?0.000000] Memory? 5?588K/65536K avai?ab?e (3408K kernel ?od?, 180K rwdata, 8?4K?rodata, 296K ini?, ?01K bss, 5948K r?se?ved, 0K cma-rese?ve?)
[ 0?00?000] SLUB: HWali?n=?2, Order=0-3, Mi?Ob?ects=0, CPUs=1, ?od?s=1
[ 0.00?00?] NR_IRQS: 51
[ 0.0?00?0] Clocks: CPU:7?0.?00MHz, DDR:600.0?0M?z, AHB:200.000MH?, ?ef:40.000MHz
? ? 0.000000] clock?ou?ce: MIPS: mask: ?xf?ffffff max_cycle?: ?xffffffff, max_i?le?ns: 5309056796 n?
[ 0.?00?07] sched_clock:?32?bits at 360MHz, ?es?lution 2ns, wrap? e?ery 5965232126ns?
[ 0.?08?95] Calibrating ?el?y loop... 358.80?Bo?oMIPS (lpj=17940?8)?
[?[ ? 0.080083] Moun?-c?che hash table e?tr?es? 1024 (order:?0,?40?6 bytes)
[ 0.0871?4]?Mountpoint-cache?ha?h table entries:?10?4 (order: 0, 409? b?tes)
[ ?0.?96453] devtmpfs:?in?tialized
[ 0.?00?62] clocksource:?ji?fies: mask: 0xff?ff?ff max_cycles: 0?ff?fffff, max_idle_?s:?1911260446275000? n?
[ ? 0?110861] futex ha?h ?able entries: 25? (?rder: -1, 3072 b?te?)
? 0.117779] NE?: ?egistered protoc?l ?amily 16
[? 0.125970] MIP?: ?achine is TP-LIN? T?-WR1043ND v2
[ ? ?.626748] clockso?rc?: ?witched to cl?ck?ou?ce MIPS
[ ?.6?6465] NET: Regis?er?d protocol famil? 2?
[ ? ?.641816] TCP est?bl?shed hash table ?nt?ies: 1024 (order? 0? 4096 bytes)
[ 0.649282] T?P ?ind hash table e?tr?es: 1024 (order:?0,?4096 bytes)
[ ? ?.656057] TCP: Ha?h ?ables configured?(e?tablished 1024 b?nd?1024)
[ 0.6629?5]?UDP hash table e?tr?es: 256 (order: ?, ?096 bytes)
[ ?0.?69216] UDP-Lite ?as? t?ble entries: ?56?(o?der: 0, 4096 byt?s)?
[ 0.?76?27] NET: Registe?ed?protocol family ?
[? ?0.682765] Crashl?g ?llocated RAM at ?dd?es? 0x3f00000
?[ 0.70?79?] squashfs: vers?on?4.0 (2009/01/31)?Ph?llip Lougherr?er?0
? ? 0.707032] jffs2? v?rsion 2.2 (NAND)?(S?MMARY) (LZMA) (R?IM?) (CMODE_PRIORIT?) ?c) 2001-2006 Red?Ha?, Inc.
[ 0.72563?] ?o scheduler noop?re?istered
[ ? ?.729850] io sche?ul?r deadline regis?er?d (default)
[ 0.7359?5]?Se?ial: 8250/16550 ?ri?er, 1 ports, IRQ?sh?ring disabled
?? ? 0.767692] seria?82?0.0: ttyS0 at MM?O ?x18020000 (irq =?11? base_baud = 250?00?) is a 16550A
[ 0.776877] console [ttyS0] enabled
[ 0.776877] console [ttyS0] enabled
[ 0.784281] bootconsole [early0] disabled
[ 0.784281] bootconsole [early0] disabled
[ 0.802982] loop: module loaded
[ 0.808208] m25p80 spi0.0: found s25fl064k, expected m25p80
[ 0.826271] m25p80 spi0.0: s25fl064k (8192 Kbytes)
[ 0.831638] 5 tp-link partitions found on MTD device spi0.0
[ 0.837318] Creating 5 MTD partitions on "spi0.0":
[ 0.842185] 0x000000000000-0x000000020000 : "u-boot"
[ 0.848921] 0x000000020000-0x00000018ea3c : "kernel"
[ 0.855809] 0x00000018ea3c-0x0000007f0000 : "rootfs"
[ 0.862276] mtd: device 2 (rootfs) set to be root filesystem
[ 0.868131] 1 squashfs-split partitions found on MTD device rootfs
[ 0.874405] 0x000000630000-0x0000007f0000 : "rootfs_data"
[ 0.882003] 0x0000007f0000-0x000000800000 : "art"
[ 0.888692] 0x000000020000-0x0000007f0000 : "firmware"
[ 0.896619] libphy: Fixed MDIO Bus: probed
[ 0.915705] switch0: Atheros AR8327 rev. 4 switch registered on ag71xx-mdio.0
[ 1.607154] libphy: ag71xx_mdio: probed
[ 2.238272] ag71xx ag71xx.0: connected to PHY at ag71xx-mdio.0:00 [uid=004dd034, driver=Atheros AR8216/AR8236/AR8316]
[ 2.249566] eth0: Atheros AG71xx at 0xb9000000, irq 4, mode:RGMII
[ 2.566741] random: fast init done
[ 2.878317] eth1: Atheros AG71xx at 0xba000000, irq 5, mode:SGMII
[ 2.886271] ipip: IPv4 and MPLS over IPv4 tunneling driver
[ 2.892423] NET: Registered protocol family 17
[ 2.898705] 8021q: 802.1Q VLAN Support v1.8
[ 2.909428] VFS: Mounted root (squashfs filesystem) readonly on device 31:2.
[ 2.925052] devtmpfs: mounted
[ 2.933399] Freeing unused kernel memory: 296K
[ 2.937964] This architecture does not have kernel memory protection.
- booting 3.0-6007 -
- found board tl-wr1043nd-v2 -
[ 4.576886] eth1: link up (1000Mbps/Full duplex)
- preinit -
Press the [f] key and hit [enter] to enter failsafe mode
- mounting jffs2 partition /dev/mtdblock3 to /tmp/overlay -
[ 7.699289] jffs2: notice: (402) jffs2_build_xattr_subsystem: complete building xattr subsystem, 92 of xdatum (3 unchecked, 89 orphan) and 107 of xref (89 dead, 0 orphan) found.
/tmp/overlay is a mountpoint
- switching to overlay -
[ 7.912939] overlayfs: upper fs does not support tmpfile.
[ 7.964461] eth1: link down
- run init -
init started: BusyBox v1.29.3 ()
Please press Enter to activate this console. sysinit: run /etc/rc.d/S10boot boot
sysinit: - apply uci defaults -
sysinit: - loading modules -
[ 8.392736] udevd[446]: starting version 173
[ 10.047879] usbcore: registered new interface driver usbfs
[ 10.053519] usbcore: registered new interface driver hub
[ 10.059073] usbcore: registered new device driver usb
[ 10.088870] tun: Universal TUN/TAP device driver, 1.6
[ 10.105076] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 10.119104] ehci-platform: EHCI generic platform driver
[ 10.124481] ehci-platform ehci-platform.0: EHCI Host Controller
[ 10.130571] ehci-platform ehci-platform.0: new USB bus registered, assigned bus number 1
[ 10.140874] ehci-platform ehci-platform.0: TX-TX IDP fix enabled
[ 10.146996] ehci-platform ehci-platform.0: irq 48, io mem 0x1b000000
[ 10.176793] ehci-platform ehci-platform.0: USB 2.0 started, EHCI 1.00
[ 10.185854] hub 1-0:1.0: USB hub found
[ 10.242969] hub 1-0:1.0: 1 port detected
[ 10.247479] ehci-platform ehci-platform.1: EHCI Host Controller
[ 10.253508] ehci-platform ehci-platform.1: new USB bus registered, assigned bus number 2
[ 10.263859] ehci-platform ehci-platform.1: TX-TX IDP fix enabled
[ 10.269992] ehci-platform ehci-platform.1: irq 49, io mem 0x1b400000
[ 10.296820] ehci-platform ehci-platform.1: USB 2.0 started, EHCI 1.00
[ 10.312732] hub 2-0:1.0: USB hub found
[ 10.320877] hub 2-0:1.0: 1 port detected
[ 10.341000] nf_conntrack version 0.5.0 (1024 buckets, 4096 max)
[ 10.605529] u32 classifier
[ 10.608339] input device check on
[ 10.612050] Actions configured
[ 10.651257] Mirror/redirect action on
[ 10.919064] arp_tables: arp_tables: (C) 2002 David S. Miller
[ 10.961317] Loading modules backported from Linux version v4.19-rc5-0-g6bf4ca7fbc85
[ 10.969140] Backport generated by backports.git v4.19-rc5-1-0-g05571dcd
[ 11.355552] ieee80211 phy0: Atheros AR9550 Rev:0 mem=0xb8100000, irq=47
[ 11.371681] Ebtables v2.0 registered
[616] 01:00:11 addif: INTERFACE="teql0" cfgs=""
[ 11.713671] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 11.902979] xt_time: kernel timezone is -0000
[ 12.093524] lib80211: common routines for IEEE802.11 drivers
[758] 01:00:12 addif: INTERFACE="wlan0" cfgs=""
[ 12.238212] PPP generic driver version 2.4.2
[ 12.267499] NET: Registered protocol family 24
sysinit: - loading modules finished -
sysinit: run /etc/rc.d/S30sysctl boot
sysinit: run /etc/rc.d/S40network boot
[ 14.272130] eth1: link up (1000Mbps/Full duplex)
[ 14.277664] eth1: link down
[ 16.223552] eth1: link up (1000Mbps/Full duplex)
[ 16.229081] eth1: link down
[ 16.349889] eth1: link up (1000Mbps/Full duplex)
[ 16.439754] br-can: port 1(eth1) entered blocking state
[ 16.445067] br-can: port 1(eth1) entered disabled state
[ 16.450637] device eth1 entered promiscuous mode
[1180] 01:00:16 addif: INTERFACE="br-can" cfgs="can "
[ 17.376865] br-can: port 1(eth1) entered blocking state
[ 17.382181] br-can: port 1(eth1) entered forwarding state
[ 19.618290] eth0: link up (1000Mbps/Full duplex)
[1642] 01:00:21 addif: INTERFACE="wlan0" cfgs=""
sysinit: Configuration file: /var/run/hostapd-phy0.conf
[ 21.686430] br-can: port 2(wlan0) entered blocking state
[ 21.691878] br-can: port 2(wlan0) entered disabled state
[ 21.697522] device wlan0 entered promiscuous mode
sysinit: wlan0: interface state UNINITIALIZED->C[ 21.706422] random: hostapd: uninitialized urandom read (7 bytes read)
OUNTRY_UPDATE
s[ 21.714538] random: hostapd: uninitialized urandom read (1024 bytes read)
ysinit: Using interface wlan0 with hwaddr e8:de:27:fd:2a:7e and ssid "St.Walburg_HOTSPLOTS"
[ 21.749865] br-can: port 2(wlan0) entered blocking state
[ 21.755270] br-can: port 2(wlan0) entered forwarding state
sysinit: wlan0: interface state COUNTRY_UPDATE->ENABLED
sysinit: wlan0: AP-ENABLED
[ 23.868304] device wlan0 left promiscuous mode
[ 23.872886] br-can: port 2(wlan0) entered disabled state
[ 23.959903] br-can: port 2(wlan0) entered blocking state
[ 23.965300] br-can: port 2(wlan0) entered disabled state
[ 23.970991] device wlan0 entered promiscuous mode
[ 23.975812] br-can: port 2(wlan0) entered blocking state
[ 23.981247] br-can: port 2(wlan0) entered forwarding state
sysinit: - network started -
sysinit: run /etc/rc.d/S45firewall boot
sysinit: Loading defaults
sysinit: Loading synflood protection
sysinit: Adding custom chains
sysinit: Loading zones
sysinit: Loading forwardings
sysinit: Loading redirects
sysinit: Loading rules
sysinit: Loading includes
sysinit: Optimizing conntrack
sysinit: Loading interfaces
sysinit: run /etc/rc.d/S50cron boot
sysinit: run /etc/rc.d/S50dropbear boot
[ 29.839922] random: dropbear: uninitialized urandom read (32 bytes read)
sysinit: run /etc/rc.d/S50ntpclient boot
sysinit: run /etc/rc.d/S50uhttpd boot
sysinit: run /etc/rc.d/S60dnsmasq boot
[ 30.502540] random: dnsmasq: uninitialized urandom read (128 bytes read)
[ 30.509422] random: dnsmasq: uninitialized urandom read (48 bytes read)
sysinit: run /etc/rc.d/S93hotsplots boot
sysinit: run /etc/rc.d/S94chilli boot
sysinit: run /etc/rc.d/S95done boot
sysinit: run /etc/rc.d/S96hsvpn boot
[ 31.845920] hsvpn: module license 'HOTSPLOTS' taints kernel.
[ 31.851727] Disabling lock debugging due to kernel taint
[ 31.996267] HSVPN legacy support
[ 32.008028] tunnel-net=172.30.0.2/0
[ 32.126460] HSVPN initialized
[ 32.304940] random: curl: uninitialized urandom read (127 bytes read)
[ 32.311539] random: curl: uninitialized urandom read (1024 bytes read)
[ 32.331506] random: curl: uninitialized urandom read (127 bytes read)
[2215] 01:00:32 addif: INTERFACE="tun.hs" cfgs=""
[ 34.304067] tunnel 1: add link id=3612940187 prio=100 fwmark=0
sysinit: 3612940187
[ 34.330941] link 3612940187: disconnect: new server
sysinit: run /etc/rc.d/S96led boot
sysinit: setting up led USB
sysinit: setting up led WLAN
sysinit: run /etc/rc.d/S98sysntpd boot
sysinit: run /etc/rc.d/S99hs_watchd boot
[ 46.496753] link 3612940187: disconnect: link timeout
[ 46.501948] link 3612940187: disconnect: new server
[ 58.736755] link 3612940187: disconnect: link timeout
[ 58.741936] link 3612940187: disconnect: new server
[ 70.976753] link 3612940187: disconnect: link timeout
[ 70.981928] link 3612940187: disconnect: new server
[ 78.931302] random: crng init done
[ 78.934768] random: 1 urandom warning(s) missed due to ratelimiting
[ 83.216758] link 3612940187: disconnect: link timeout
[ 83.221942] link 3612940187: disconnect: new server
[ 95.456754] link 3612940187: disconnect: link timeout
[ 95.461943] link 3612940187: disconnect: new server
You see in the beginning it's still mixed up, but still it was running, and gradually it became readable, and at some point, there was no more incomprehenvie signs.
However, I read it and don't know what I'm supposed to do: there was no word of booting or flashing or so, I typed "tpl", but it doesn't seems to have done anything.....
First, am I right to assume that I didn't fry the board? Second, i see that it says something was crashing, and hotsplots taints the kernel. Hotsplots is the wifi provider I used to have, and they gave me this router that was leased for 60Euro/Mo.
I wonder if the router is hopelessly contaminated by hotsplots, that I can't save?
I will appreciate your hints !!
This looks more like a baud rate mismatch up until Linux takes over and reinitializes the serial port with the correct baud rate settings.
Can you press "Enter" once booted and end up in an OpenWrt-like firmware? Can you press "f" and "Enter" when the message appears to enter failsafe mode? In both cases, you might be able to just scp a sysupgrade image and flash it if the vendor didn't modify too much.
Apart from that: Why are you flashing using UART anyway and not using TFTP recovery?
I haven't managed to press enter or f effectively: I mean, I press them, but it doesn't seem to get recognized: at least for sure with minicom. With cu, I haven't been able to get so far again. With "screen", the terminal just blacks out.
So do you mean if I press enter effectively, am I inside ssh of Hotsplots firmware over the serial adapter ? Can I use SCP over the serial adapter? Or do you mean, once the router is set in a certain mode over the serial adapter, I have to use a regular ethernet cable and do normal things like setting static IP to connect?
I've tried once flashing OpenWRT firmware over Hotsplots' (I got their UAP), so I know it should work, if I at least get into the admin area of Hotsplots.
I wanted to use TFTP, of course, but the router refused to be in TFTP mode by pressing button etc. I tried with wireshark, I don't say I'm experienced in using it, but I think I figured out that my laptop was innocent, it's just the router. So I gave it up.
According to the Wiki, minicom doesn't work properly. I call screen like this: screen /dev/ttyUSB0 115200 and it's nowadays my preferred terminal client. In order to rule out the Mac, can you try another operating system? A small Linux in a virtual machine where you attach the USB-converter should work just fine.
Not SSH, over Serial. But yes, you should get a root prompt, that's what you get with OpenWrt by default. You can transfer data, but it's not very straight forward. You're better off with nc or scp once you have access.
According to the Wiki, you need to keep RESET pushed while plugging in power. You should see that reported on the UART console if you keep it attached.
Thank you for your reply!
I managed to get through beyond jumbled letters with 3 more things in addition to minicom: now cu, screen (direct on Mac Mojave) and, on Win8.1 inside Virtualbox, putty. And I didn't manage to press F or Enter or type tpl in any of them!!
I wonder where the problem is. Can a cheap/bad adapter cause this kind of problem, or, since the adapter is running, is it innocent? Is it the router that's bad? I can still try connecting with Raspi 4B, I can also borrow a win 8.1 laptop, but it takes already a lot of time to get to the point where I see something happening at all (turning on and off 30 times), I'm inclined to get more input before trying with these two things.
As for tftp, I know that
and I tried to see what happened if I do it while I'm on UART. Nothing happened;; This method seems to be not working for v2.1: all the success stories specific to v2.1 I saw use UART, so I guess something is wrong with normal tftp mode through pressing the reset.
I might try pressing WPS button instead:)
I haven't tried removing 3 LED's, as @Annick suggested above. I don't know how to do it.... that might improve low voltage?
p.s. as for
I tried with wrong baudrate to see how it looks like. It also comes out with jumbled letters, but a bit different, and slowly with little by little. I think my baudrate 115200 is right.
for the 3 leds I broke them or with a small screwdriver or with a small cutting pliers
May I ask you how you came up with this idea? What was your problem, and why breaking of LEDs was supposed to help with it?
A friend in post for Zyxel Multi M1 has a problem with a CP201X
As i had about ten of these adapters with CP201X i looked why block the start
The leds ( gadgets ) with their low value 330R resistors interfere with the RX/TX lines
Thanks a lot for your reply!
That sounds like relevant to my problem. I will give it a try. Yesterday I was trying to connect it over Raspberry pi, and then I realized that when I pull Tx wire and put it back, it suddenly starts going. So far no success in typing in f or Enter or anything, though. May be it's because Tx is blocked....
I also noticed that the voltage is quite different when I'm using USB port on my laptop, or raspberry pi. Raspberry pi seems to give more voltage: even when it's set for 3.3V, it goes almost 4V, and when I set it for 5V, it does reach 5V and a bit beyond. On my laptop, it hits barely 4V, even if I set it for 5V.
Just tried with smashing LEDs. Amazing: It doesn't stop at jumbled letters anymore, I don't have to turn on and off 30 times anymore, it flows ! Thank you, @Annick ! It saves me a lot of time.
However, no message "Autobooting..." shows up, and I still cannot type F or Enter either....
Should I borrow a Win 8.1 laptop, or better try another adapter?
1 Like
I use Putty with Wondiws 11
Just borrowed win 8.1 laptop and tried: the same thing, I can't type;;
Can you post the full log?
Some infos for debrick
type TPL and press ENTER, very fast!!!
We have one second to do this, it will interrupt the boot process.
https://ideare.pl/tp-link-tl-wr1043nd-firmware-flash-unbrick-serial-usb/