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4.1 Introduction

The AKKON controller board is a development respectively prototyping board based on the LPC2148 micro controller. Applications can easily be built and programmed using free development tools.

4.2 Features

General features

• MCU: LPC2148 16/32 bit ARM7TDMI-S™ with 512KB Flash and 42KB RAM

• 60 MHz clock frequeny

• USB 2.0 interface with USB link led

• 32.768 kHz crystal and RTC backup battery connector

• 5 Volt tolerant IO

• on board voltage regulator for 3.3V, 800mA

• power input 6-12V DC or 9V AC, board can also be powerd over USB

• SPI interface

• RS 232 interface using flat cable

• programmable using serial, USB or JTAG interface

• standard JTAG connector with ARM 2x10 pin layout for programming/debugging with ARM-JTAG

• reset button

• external reset using RS232 interface

Specific features

• free gnu c compiler and IDE available (see the Yagarto project, Winarm-Project)

• 9 digital inputs with pullup and line input driver

• pin P0.25 alternatively usable as digital output or analogue output

• 1 PWM output on RJ45 connector

• 16 digital outputs driven by 74x245 drivers

• 10 digital inputs, 1 digital input with extended voltage protection

• 6 further digital inputs or outputs alternatively to JTAG (depending on hardware configuration)

• 4 led associated to digital inputs

• 7 led associated to digital outputs (one for PWM output)

• 1 led for power supply

• 2 analogue inputs alternatively usable as digital IO

• most of IO pins connected to IDC header board plugs

• 5 RJ45 connectors for easy connection of the hardware with other hardware

• extra connectors for SPI, analogue output, Power, Pin P0.22, reference voltage for ADC and reset circuit

Dimensions and mounting

• Europa card format 160mm * 10mm for 19” mounting

• 4 holes for mounting in a case

• depending on RJ45 connectors different types of plugs can be mounted

Further details can be found in the datasheet (comming soon)

4.3 Software development

Development can be done using the free gnu c-compiler. There is also a full solution using the free integrated development environment Eclipse available.

Tool type	Link	Description
Fulls software developement package	Yagarto	Yagarto project: Full development package including excellent tutorial how to setup the development environment, compile, run and debug applications for ARM micro controllers
Debugging hardware	Wiggler	Self made debugger. This tool is also available as commercial product
In circuit programming	LPC200 Flash Utility	In circuit serial programming using RS232, released by Philips Semiconductors

4.4 Example applications

Example 1: Blinking LED

Follwing example shows an implementation of blinking LED

Example 2: CNC controller

The AKKON USB Controller Board can be used with a MS-Windows PC and a CNC control unit. For this reason the firmware AKKON CNC control has to be uploaded to the AKKUN USB Controller Board. Furtheron AKKON Desk has to be installed on a MS Windows PC (Windows 2000, Windows XP, Windows Vista). With the pre-programmed bootloader, programs can be uploaded to the AKKON USB Controller Board very easy. AKKON CNC can be used for stepper motors with 200 steps per rotation. Clock frequencies are around 20KHz (maximum measured frequency was 92 KHz on linear interpolation) but the value can change if large amount of very short line/arc-commands are sent to the controller. Different machine parameters can be set be AKKON Desk in the configuration files. The concept of AKKON CNC is shown in figure 1.

click here to view large picture

Figure 1: Control concept of AKKON USB Controller Board and CNC-Controller hardware

Please note:

AKKON Desk is currently in a beta phase and can be used by users that use the AKKON USB Controller Board for free. Please note, that the program can only run with the pre-programmed bootloader.

Further information about the AKKON CNC software can be found here

4.5 Construction

The AKKON Controller Board is based on SMD (Small Mounted Devices) and through hole techniques. All parts can be mouted using standard equipment. Special attention has to be laid on the micro controller with 0.5mm pin distance. Please have a look the tutorial for soldering small mounted devices.

click here to view large picture

Figure 2: Mounting plan of AKKON Controller Board

click here to view large picture

Figure 3: 3D-View of the AKKON USB Controller Board

4.6 19 inch version with ISEL compatiblity

click here to view large picture

Figure 4: DIN41612-Version of AKKON Controller Board

This is another version of the AKKON Controller Board. The board is designed for 19 inch case assembling. In addition a USB to serial converter can be assembled instead of a RS232-driver. The board is designed for replacing a ISEL CNC controller with the AKKON CNC controller.

4.7 Downloads

ID	File type	Description	Comment	Last update
TN011	1.5 MB	design files	Schematics, mounting plan, part list and further information for setting up the board	23th of June 2008
TN012	400 KB	datasheet	Description of features or AKKON USB Controler Board	23th of June 2008
TN013	2 MB	construction manual	Description of main functionality and how to setup the AKKON USB Controller Board	26th of June 2008
TN014	2 MB	firmware update	Description how to upload firmware using the free Flash Utility from NXP	26th of June 2008
TN015	0.6 MB	datasheet	Description of example application AKKON CNC System	23th of January 2009
TN016	460 KB	hardware test	Description of some easy tests for construction and troubleshooting	26th of June 2008
TN017	460 KB	Akkon simulator	Installation manual: How to setup Akkon simulator	26th of January 2009
	19 KB	examples	Examples for Arm Realview	14th of March 2008

4.7 Available boards

Variant 1: Print

• printed circuit bouard without components (dimensions 160mm*100mm)

• documentation (schematics, placement plan, part list, setup and mounting instruction, small test program)

Variant 2: Print and micro controller

• printed circuit boad without components (dimensions 160mm*100mm)

• ARM7TDMI LPC2148

• documentation (schematics, placement plan, part list, setup and mounting instruction, small test program)

Variant 3: AKKON USB controller board kit

• printed circuit board without components (dimensions 120mm*100mm)

• all parts for seting up the AKKON USB controller board

• PIC18F4550 with bootloader (enables to run free CNC-software version of AKKON CNC)

• documentation (schematocs, placement plan, part list, setup and mounting instruction, small test program, source code of modified bootloader in C)

Article	Description	Price	order
	Variant 1: Printed circuit board for AKKON Controller Board Only print, no parts are included	Euro 25.-	Please let me know if you are interested in the AKKON Controller Board on: geburgeriplace.at or using the feedback form
	Variant 2: Printed circuit board for AKKON Controller Board with pre-solded LPC2148 controller (ARM7 LPC2148 has very fine pins, this will make construction easier)	Euro 53.-
	Variant 3: AKKON Controller Board - kit , printed circuit board, all parts including pre-soldered micro controller ARM7 LPC2148(according to part list)	Euro 94.-
Prices without shipping (this is a currently a privat offer) Only small amounts are available