Arduino UNO R3 Mini/Micro USB ATmega328P CH340G

Development Tools IDE 1.x
1

i just got an Arduino UNO R3 Mini/Micro USB ATmega328P CH340G from ebay
when i plug it in i see led flash about 5Hz and when i try upload link i get
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x38
etc.

when i do Get board info i get
BN: Unknown board
VID: 1A86
PID: 7523
SN: Upload any sketch to obtain it
so i'm pretty sure the PC is seeing the com port (3) since if i unplug the board, i don't get that info

i tried 2 computers (both win 10 64bit) and 2 cables already

I selected Arduino/Genuine UNO but did try the other UNOs . i tried default programmer and ArduinoISP

any ideas please? thanks

PS, i tried burn bootloader and got this
Error while burning bootloader.

PPS,i downloaded and installed the CH340 drivers from the chinese website
when i looks at device manager for Ports i see
USB-SERIAL CH340 (COM3)

2

Most likely, wrong board selected is my guess. Link to product page and one of us can tell you what boards to try. Some ebay boards come with a bootloader that isnt the one youd expect.

Those blinkd after reset, is that the triple-blink of optiboot?

Get board info only works for boards with 16u2 as usb-serial interface or native usb, so thats fine.

Looks like driver is fine.

"Burn bootloader" requires you to have addional hartdware to work (specifically, it requires you to havr the isp programmer you selected from tools-> programmer connected to the target board)

Tools-> programmer setting doesnt matter unless you are using an isp programmer (for burn bootloader or upload using programmer)

3

thanks, its here

the mini USB version

Mini USB(UNO R3 ATMEGA328P-16AU CH340G Mini USB Development Board )
Main Changes from the older version:
Add two rows of the holes for the pins. So it can be connected with normal Dubond line.
Add 3 rows of the holes for wiring.
Change the in-line package of ATMEGA328P to flat package.
CH340G Replace ATmega16U2
Plug UNO development board, the driver will be automatically installed.
select the board UNO inside the die.
Select the COM port, this can be in my computer queries, just inside your uno port development board
You'd better to choose arduino own routine procedures, burn into the board

when i power it up i get 3 groups of what maybe triple blink, then a pause, then just continuous steady blinking,

thanks

4

The eBay product photo for steveh2112's board:

5

awesome, i got it, i set nano (which it isn't) with 328P (old bootloader) and its working

thanks to DrAzzy for suggesting i try different boards

BTW, i ordered the board Jan 3 and it arrived today, the 16th, that's a speed record for me from china i think

6

Nice board - notice that they used a decent 3.3v reg! And a real crystal that you could swap out instead of the resonator used on the official board. Id rather use that than a genuine one.

Pity they put the crappy nano bootloader 9n it (if you bootload it as uno, using an isp programmer, it would subsequently behave as an uno)