HiLetgoPro Mini Atmega328P-AU 5V, 16MHz Development Board Microcontroller Bootloadered Pinout is identical to Arduino Pro Mini, compatible with Arduino IDE with pin headers 3 pieces

Was absolutely identical to Arduino and worked correctly with no problem. It loaded up both test and final program without a problem. A reliable clone.

Didn't have problems uploading sketches but VCC output is 3.3 even though they are specified as 5v. Had some problems with them but due to not being able to find reliable information on them not sure if problems were because of boards or self inflicted. Regardless would never buy again.

Made a few projects with these. They worked fine and I used them for anything and everything Arduino.You will need to solder these. They come in pieces. If you don't want to solder then buy something else. These are cheap because there is some assembly required.

Great boards, Great price!FYI:The genuine boards($17.95 as of today) use a Microchip MIC5219 regulator in the current revision, with an absolute max of 20 V, and 500 mA. Those parts can be run continuously at 12 V.These boards have the Torex XC6204 LDO regulator (markings '4BMD') it is rated for 150 mA at 10 V max. Recommend 6 V ~ 9 V usage(RAW).

one works fine, one works but is to hot to touch and one will not program, i tried several usb to ttl modules. After some testing I found the one that wont program reset pin stays at .35v without pressing reset, so it never goes high. reset trace goes under the chip so problem could be there or in the chip its self. the one that runs hot has a bad diode so I might be able to scavenge from the board that wont program and at least have 2 boards that work.

This just arrived today and the Arduino "hello world" equivalent Blink program works fine. I have another program that loads on this board and gives me serial communications back.My tests prove this is in fact a ATMega328 running at 16Mhz. It came well packaged in bubble wrap and sealed static bag. The pin headers came in the bag unsoldered - plan to solder if you need them.You will also need a usb to serial converter chip/board to program this. I use the OSEPP brand "FTDI breakout board."Overall I'm happy with my purchase and already have another on order.

These work for my project where I have an external 5V converter (I'm using a TI TPS613222A) and couldn't fit in an ATmega 328P IC (Otherwise I would've integrated the IC).-Every now and then, I'll get a COM port error, but this is as simple as resetting and unplug-plug back in (Using a genuine Uno as the programmer)-I can confirm that the regulator on mine are marked with "4BMD" which seems to be a Torex XC6204-The board edges are rough, whereas brand name boards are routed out and have smooth edges-The microcontroller on mine are 328p U-TH, I can't confirm if these are genuine or not but they work for me-The ones I received have A4-A7 via/pins, unlike the product picture ones which do not have A5 and A6 vias/pins-These came with an Arduino bootloader, as I was able to use the 6 pins on the bottom for programmingOverall I would only recommend these if-You're using an external 5V regulator-You have a FTDI or an Arduino with one and don't want to use a nano for some reason-You need the absolute lowest power consumption (Be sure to desolder either the LED or the LED resistor)