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--- en:hardware:avr-can:controller [2010/02/12 12:17] – created raivo.sell
+++ en:hardware:avr-can:controller [2020/07/20 09:00] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
-====== AVR-CAN controller ======
+====== Controller ======
-FIXME! Replace correct data according to AVR-CAN controller
+==== Soldering Parts to the PCB ====
-[{{  :images:hardware:arm-can:main_board_1.jpg?250|Board front view}}]
+Use the parts list (see appendix) to check if you have all the necessary parts to
-[{{  :images:hardware:arm-can:main_board_2.jpg?250|Board back view}}]
+build the Autostudy CAN board.  Alternatively, the following picture gives an
-[{{  :images:hardware:arm-can:main_board_ports.png?250|Overview}}]
+overview of all the needed parts:
-**MCU**
+{{  :en:hardware:arm-can:can-v4_parts_1.jpg?500  |Figure 1.1: Parts}}
-  * AVR
-  * 8-bit
-  * 128 KB flash, 32 KB SRAM
-  * CAN 2.0 controller
-  * USB 2.0 device controller
-**Ports**
+Figure 1.1: Parts
-  * 4 x ADC input (0-3 V measuring range)
-  * 4 x PWM output (drives up to 600 mA load)
-  * 2 x CAN connector on 1 bus (10 pin header)
-  * 1 x SPI
-  * 1 x I2C
-  * 1 x UART
-  * 1 x JTAG (20 pin header)
-  * 1 x USB device / host (Micro-AB)
-Every pin has IO functionality (except PWM)
-ADC and PWM have 3 pin headers with ground and +5 V
-**On-board features**
+To solder the parts onto the board in the most efﬁcient manner, parts with smaller
-  * 1 x Power LED indicator
+height should be added ﬁrst. Use the part list for reference. The ﬁrst parts to be
-  * 1 x 350 mW RGB LED
+soldered on to the board are the resistors and diodes.
-  * 1 x Push-button
-**Electrical**
+{{:en:hardware:arm-can:can-v4_1.jpg?250|Figure 1.2: Step 1}}
-  * Supply voltage 5 ± 0.25 V
+{{  :en:hardware:arm-can:can-v4_2.jpg?250|Figure 1.2: Step 2}}
-  * Powered from CAN bus, DC jack or USB device port
-  * Reverse voltage and overcurrent (3 A) protection
-**Physical**
+Figure 1.2: Step 1+2
-  * Dimensions 60 x 50 x 12 mm
-  * Weight ~50g
-  * Optional housing (increases height)
+After that, solder the oscillators (Q1, Q2), small capacitors (C1-C4) and the IC
+sockets onto the board.  When soldering the IC sockets, the location of the IC
+socket’s notched ends have to match with the labels on the PCB. Buttons (KEY1,
+KEY2, KEY3, RESET) and LED (LED1, LED2, LED3, PWR-LED) are the next
+parts to be added subsequently.
+{{:en:hardware:arm-can:can-v4_3.jpg?250|Figure 1.3: Step 3}}
+{{  :en:hardware:arm-can:can-v4_4.jpg?250|Figure 1.3: Step 4}}
+Figure 1.3: Step 3 + 4
+Solder pin headers, electrolytic capacitor (C5), DC jack and USB jack onto the
+board.
+{{:en:hardware:arm-can:can-v4_5.jpg?250|Figure 1.4: Step 5}}
+{{  :en:hardware:arm-can:can-v4_6.jpg?250|Figure 1.4: Step 6}}
+Figure 1.4: Step 5 + 6
+In the last step, put the 4 IC (voltage regulator, Atmega32, CAN controller, CAN
+transceiver) into their corresponding sockets. The orientation of the IC has to
+match the orientation of the IC sockets (see the IC’s notched ends).  Jumpers
+JP1, JP2, TERM are to be placed on the pin headers (2x1).  Please note that the
+jumpers TERM and JP1 will not be used until later. Therefore, they must not (!)
+connect the two pins of their pin headers (see below). The soldering process is
+now complete and the board should be tested.
+{{  :en:hardware:arm-can:can-v4_7.jpg?250  |Figure 1.5: Step 7}}
+Figure 1.5: Step 7
+==== Testing the Board ====
+Warning: The device can be powered by 3 different means: (1) through the use
+of the provided AC/DC-adaptor (2) from the PC over USB (3) over the CAN Bus
+from another CAN board that is being powered by one of the above mentioned
+means. The USB cable and the AC/DC-adaptor should not be plugged in simul-
+taneously (!).  If 2 boards are connected via CAN, jumper JP1 can be used to
+power one board while the other board is powered by either (1) or (2).  In this
+case, don not connect the secondary board to any other power source (!)
+{{  :en:hardware:arm-can:aufbau1.jpg?500  |Figure 1.6: Structure}}
+Figure 1.6: Structure
+Example of three CAN-boards connected with ribbon cables, one powered by
+USB and the other two boards indirectly powered via CAN Connect the provided AC/DC-adaptor to the board’s DC jack. If the red PWR-
+LED doesn’t work, unplug the AC/DC-adaptor and check the orientation of the
+voltage regulator IC ﬁrst. If the IC is positioned correctly, plug the adaptor back
+in and use a multimeter to conﬁrm the correct voltage output of 5V between the
+voltage regulator’s ouput pins 1 and 4 (FB and GND, respectively). Unplug the
+AC/DC-adaptor and use the USB cable to connect the board to the PC. The red
+PWR-LED indicates that the device is functioning.

en/hardware/avr-can/controller.1265977068.txt.gz · Last modified: 2020/07/20 09:00 (external edit)