Showing posts with label atmega. Show all posts
Showing posts with label atmega. Show all posts

Friday, February 6, 2015

BangGood.com - ATmega328P Nano V3 Controller Board Compatible Arduino Improved Version [SKU157951]


Arduino nano clone.


You can see/buy it here: >> LINK <<


UPDATE:
I can make a simple scheme that can be used to test all the pins (digital I/O, PWM, analog IN), if someone is interested just leave a comment below.

Specifications:
  • Microcontroller Atmel ATmega328
  • Operating Voltage (logic level): 5V
  • Input Voltage (recommended): 7V ~ 12V
  • Input Voltage (limits): 6V ~ 20 V
  • Digital I/O Pins: 14 (of which 6 provide PWM output)
  • Analog Input Pins: 8
  • Current per I/O Pin: 40mA (max) 20mA (recommended)
  • Flash Memory: 32KB (ATmega328) (of which 2 KB used by bootloader)
  • SRAM: 2KB (ATmega328)
  • EEPROM: 1KB (ATmega328)
  • Clock Speed: 16MHz

Antistatic package.The image is huge, open it in another tab !

This module price is (currently) 3.27$ (around 3€).
The soldering quality is high, i can't see any defect.
The ATMEGA is an ATmega328P, the voltage regulator is a AMS1117 and the USB/SERIAL converter is a CH340G. The four leds are all RED.
I recommend to download the datasheet and the pinout pdf for more info.

WARNING!
I can't find how much the CH340G can output on the 3.3v, with google i've found two values, 50 mA and 120mA, to stay safe i suggest to not go more than 50 mA.
I asked directly to BangGood, the CH340G can supply max 50 mA on the 3.3v, don't exceed this limit !

Datasheet:

Arduino Nano v3 - PINOUT (file size: 748KB, revision 3.1, updated: 08/2014)
ATmega328p - PINOUT (file size: 547KB, revision 3.0, updated: 07/2014)
ATmega328p - SUMMARY (file size: 1MB, 39 pages, revision I, updated: 10/2014)
ATmega328p - COMPLETE (file size: 34.3MB, 650 pages, revision I, updated: 10/2014)
AMS1117 - COMPLETE (file size: 92,9 KB, 8 pages, revision N/A, updated: N/A)
CH340 - COMPLETE (file size: 144 KB, 6 pages, revision 3.0, updated: 07/2014)

Drivers:

CH340/341 - WINDOWS 98/ME/2000/XP/Server 2003-2008/VISTA/Win7/Win8 32&64 bit (file size: 228KB)
CH340/341 - LINUX (file size: 8KB)
CH340/341 - MAC (file size: 289KB)

Drivers/IDE HowTo:

Yellow triangle in the win7 driver panel.
 
Double click on the drivers (CH340-341.EXE), click INSTALL.


The driver is correctly installed on COM18 (this depends on your system).


Modify the Arduino IDE like this (COM18 can be different on your system).

Sunday, February 1, 2015

BangGood.com - 3A LM2577 DC-DC 50KHz Adjustable Step-up Power Converter Module [SKU072366]


Well, i got this some time ago but i used it 3 days ago, and... The horror.
Let's see why.

On the item page >> LINK << there are the info with some photos:

Specs and package infos.
Module photo on the page.


As you can see it say PACKAGE 1x LM2577 with INPUT 3..30v and OUTPUT 4..35v

But what i got instead ?
I got a module with an XL6009 indead of LM2577, i was thinking maybe is the same thing made by another manufacter but no. In the datasheet of the XL6009 (version 1.1 page 5) there is INPUT 5..32v and the OUTPUT can go up to 60v

But it don't end here, pics of my module:

The module i got.
  1. The 220uf 35v (*) input cap is twisted and soldered only on the negative pin !!!
  2. The output cap is only 50v but the output voltage can go up to 60v !!! The cap can explode !!!



How the hell this thing has passed the QC ?

(*) 220V is the code for :
      220 = uf
      V = 35v