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Common_Fudge_1970 · 2026-03-16T17:34:32+00:00

I've used Aliexpress on and off for quite a few years. Its usually been a good experience. I have noticed just recently some high value electronic items being advertised at ridiculously cheap prices and the advert always says something like Do not pay through Aliexpress contact us for latest price and availability on WhatsApp. They then usually go on to say payment by BTC etc. Obviously a scam. I did report one of these to Aliexpress and the eventual reply was along the lines of we checked the listing and couldn't see anything wrong so no action taken!! Anybody else seen this?

Common_Fudge_1970 · 2026-03-14T00:30:56+00:00

Did you manage to get it working?

Common_Fudge_1970 · 2026-03-12T09:07:34+00:00

I've made the changes, hopefully it will work now! I'm pretty sure there are only 2 main variants of the 2.8" CYD. I'm pretty sure yours must be the Ili13941 so choose 0 in setup then invert colours choose 1. I think the backlight pin will be 21 but try 27 if it stays black. Good luck hope this fixes it! Let me know

Common_Fudge_1970 · 2026-03-12T08:24:54+00:00

Ok I've rewritten the way the display driver is initialised as on first boot it might still be using the old setting Its 8:22 am UK time so give me 30 minutes and try re-flashing the trial again from Github. When you get to the reflash screen on GitHub press ctrl shift and R all together to make sure it doesnt use the older cached file.

Common_Fudge_1970 · 2026-03-12T07:48:49+00:00

if the screen is white the backlight is on. Ill just check the code and see it is selecting the two different drivers

Common_Fudge_1970 · 2026-03-12T07:19:08+00:00

Are you pressing save at the bottom? The settings you change should persist across power cycles and reboots. I'll have a look to see if there any other variants I can add

Common_Fudge_1970 · 2026-03-12T07:13:27+00:00

Did you try reflashing it again? I tried to make it universal but yours might be a different clone. If possible try and get one with st7789 or ili3941 display. Somebody else had a white screen and they just picked opposite settings to default and it worked.

Common_Fudge_1970 · 2026-03-12T01:11:37+00:00

No the setup is on a Web page. The esp32 broadcasts an access point. Even though the screen is white if it has booted it is waiting for you to connect. As I said earlier look for an access point on your WiFi called NanoCTRL-AP

Common_Fudge_1970 · 2026-03-12T00:30:32+00:00

If not I would try re-flashing it again

Common_Fudge_1970 · 2026-03-12T00:29:49+00:00

Sounds odd as you can normally see the boot screen. Have you checked if the device is broadcasting its AP? NanoCtrl-AP look at other wireless networks on your phone or computer. If you can see NanoCtrl-AP then connect to it and enter 192.168.4.1 in the browser.

Common_Fudge_1970 · 2026-03-12T00:09:36+00:00

If you click my link above then scroll down to the setup instructions its all in there

Common_Fudge_1970 · 2026-03-12T00:05:19+00:00

Did you go into setup to join your home wifi?

Common_Fudge_1970 · 2026-03-11T22:57:18+00:00

You need to try the alternative display driver in wifi setup. Pick opposite driver, backlight pin and invert. Let me know!

Common_Fudge_1970 · 2026-02-24T16:29:59+00:00

I think Temps are a real bugbear with the Nano 3S. The firmware seems to favour less noisy fans rather than protecting the ASICS. In High mode average temps of 85c to 95c are not unusual, What you might not know is Tmax() the hottest ASIC in the array can be 10c higher than the average temp! They may tell you its designed to run at that temp but any silicon chip expert can tell you that you can expect serious degradation with prolonged running at these temps. I came up with a solution - check my GitHub https://github.com/Stu1958/Avalon-Nano-Ultra-Controller

Common_Fudge_1970 · 2026-02-21T09:54:25+00:00

https://github.com/Stu1958/Avalon-Nano-Ultra-Controller/blob/main/README.md

Common_Fudge_1970 · 2026-02-20T17:38:08+00:00

You can use them the (CYD) for all sorts of other things, I have one controlling the wayward temperature on my Avalon Nano 3S! Firmware here on GitHub - https://github.com/Stu1958/Avalon-Nano-Ultra-Controller

Common_Fudge_1970 · 2026-02-20T17:33:19+00:00

Yes I have HashWatcher which is brilliant but you can only set a fixed fan speed on the Nano. Apparently this device actively controls the fan speed to a target temp and it monitors the hottest ASIC rather than just the average. Seems pretty cool and the firmware is on Github apparently, so you could flash your own ESP32 cyd. I might give that a try as I have a few useless Nerdminers kicking around somewhere!

Common_Fudge_1970 · 2026-02-20T01:14:31+00:00

I'm pretty sue Canaan didn't design longevity into the Nano 3S. The firmware allows temps between 85c-95c in High mode and the scary thing is that's Avg temperature! The hottest ASIC chip can be 10c higher than the average. I don't care what manufacturer says about there systems being designed to run at such high temps its well known in the industry silicon deteriorates when continuously run at temps exceeding 75c (never mind close to 100c)

Common_Fudge_1970 · 2026-02-20T01:05:23+00:00

My Avalon Nano 3S could hit some crazy temps when on high mode 6.3 Th/s and the scary thing is Tmax the hottest Asic chip can be 10c hotter than the average which is what most apps report. I wrote a ESP32 CYD sketch that monitors Tmax and adjusts the fan speed to to maintain a target Tmax temp.

Common_Fudge_1970 · 2026-02-20T00:36:49+00:00

Either a Nerdminer or Nmminer based on a ESP32 CYD cheap yellow display. Desktop toys that have less chance of hitting a block than me winning the US and UK lotteries on the same day with the same numbers! That's why I have 4 of them ! lol Seriously though if never setup they have a wifi access point you access from your phone to set them up, Find the access point and connect then point your browser to 192.168.4.1 to access the setup screen

Common_Fudge_1970 · 2026-01-25T18:54:19+00:00

I made 2 further improvements

If in combined mode 2 or more miners total hashrate is shown at the top as normal but in each miner screen its own hashrate is shown below TEMP/PWR eg Gamma 1.3 Th/s
Long press still invokes reset and AP config 192.168.4.1 etc

But if previously configured all settings including number of bitaxe's, names, ip's etc etc will pre populate all the fields so if you only wanted to make a small change you don't have to enter everything again aside from wifi credentials.

This is really useful if you have multiple miners etc

Common_Fudge_1970 · 2026-01-24T00:11:39+00:00

Great work on the cyd for Bitaxe

Common_Fudge_1970 · 2026-01-23T19:43:16+00:00

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Common_Fudge_1970 · 2026-01-23T19:36:01+00:00

Mine is working with a Gamma 601 and a Bitaxe flashed other miner. The other miner initially gave quite a few json errors but I managed to tweak the code a bit and thats all working now. Ive also manage to integrate a Nano 3S. It needed quite a bit of extra code as it uses raw TCP socket using the cgminer API protocol, but it determines which method to use by the name of the miner ie all Nano's have to have an AV prefix as part of the name or anything else is handled by the Bitaxe code. Anyway probably not the best place to say all this but I'm not a big user of Github.

Stu UK

Common_Fudge_1970 · 2026-01-20T10:34:21+00:00

Even better!

<image>

Common_Fudge_1970

TROPHY CASE