HiLetgo3pcs Pro Mini Atmega328P 5V/16MHz Development Board Compatible with Arduino pro Mini

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.

Updated Review..I ordered 6 more of these awesome boards.. for a total of about 15 bought from this seller.GREAT product and amazing cheap prices!!all 6 of the new devices arrived 3 weeks earlier than expected!!They all work perfectly!!(I previously had to deal with customer support and they were amazing support too!!)A++ product and seller!

Same form factor just incredibly thick board. The power LED is also incredibly bright, a lot brighter than the original Sparkfun boards. I had to shelve these for my current project and order more of the original. For one off's, im sure these will work fine.

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).

Given the low cost of this one, I figured it is worth getting one to test it. I ordered one and tested it in a prototype circuit and it worked just like the genuine pro mini controllers. So I went back and ordered a bunch for the project I have been working on. Unfortunately I never really tested the original one for more than a few minutes at a time and at 9v. raw supply vs. 12v. which the real project was using. These won't last more than an hour each and they all blew a capacitor and also burnt the voltage regulator on board. Stay away unless you are planning on using them in very low voltage and very rarely. Totally not worth the saving...

These work OK but I have a couple of issues. First, as has been pointed out in other reviews, the FTDI programming pin-out is reversed from the amino version. This is not a huge issue but you need to pay attention. Second; I got these boards for a low power application, the series resistors with the LED's are 1K rather than the 10K in the Arduino. This increases the boards current draw considerably. Three; there is supposed to be a board jumper to allow the voltage regulator and power LED to be isolated from the board so battery applications use less power. On this board, you have to remove the components. The board does 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.

I am working on a low power battery powered Arduino project and these boards are perfect fitafter reading chip burning reviews I was a bit worried but I went ahead and bought them .I was able to bypass onboard voltage regulator by using VCC pin . board sleep current was 27uA at 4.2Vfor 5-12v supply user needs to connect to RAW pin , instead of VCC . this is not written anywhere and could be the reason for chips burning .