Recent Posts

21

JTAG / Can i use one ARM-USB-OCD-H to flash 6 devices in sequence?

« Last post by tungbill on September 17, 2018, 03:14:46 PM »

Hello everybody, im pretty new to ARM. I have a task, which i have to flash 6 devices in sequence. Right now i can only flash 1 device. Can someone give me some suggestions/idea?

22

SHIELDS / Olimexino Nano GSM not reacting to UART

« Last post by derchris on September 17, 2018, 03:03:00 PM »

Dear All,

I know the Nano GSM isn't meant as a standalone product, but we're trying to use it as a daughter board for a bigger PCB and so I still hope what somebody is willing to help.

Connection during test is via the 2x4P headers on the card edge, RX/TX is properly connected, GND too, of course, and VBat2 is fed with 3.8V (we could give it 5.5V but I guess that's too high).
When the PWR btn is pressed, I can see it turn out, the LED is blinking, alright. But it doesn't respond via UART, neither with 9600, 115200 or 57600 baud. I know chances are that it's my fault, but still, any help?
Plus, extra question: as the system is powered by a LiPo, does VBat2 really require > 3.7V?

Edit: Something to add is, that it works nicely with the Olimexino MCU. Our TTL logic is 3.3V, might this be the problem?

23

PIC / ALBUS Lathe CNC Conversion

« Last post by nwihlborg on September 17, 2018, 08:58:45 AM »

ALBUS-Lathe CNC Conversion Spec

The Lathe works in 3 Main modes:

   1.Manual Mode:
   Only Z- feed support
   DRO Support

   2.Power Mode:
   XZ -feed support
   DRO Support
   Semi automated functions like make Chamfer/Fillets/Cutting
   Homing and Goto functions

   3.G-code Mode:
   Reads Gcode from microSD disc and executes it
   Operates in Closed loop with DRO


Digital Read out system (DRO): 
   Diameter or X-Coordinates
   Absolute/Incremental
   Price 50$ per Axis (Max330 mm)
   Keypad input of Zero/New  data (X-Z-D)
   Resolution 0.01mm
   Uses modified WIXEY remote digital readout (Kit ~ 50$ each)
   For other applications it can connect direct to PC USB as a ASII com port
   Communicates with Lathe Controller (EMC protected)  via plastic fiber
   No electrical ground or signal connections for EMC protection

Extern Power Module:
   48V 10A for BLDC Spindle & 24V 10A for Stepper
   Separated Power Supply no Mains in the Lathe

Controller Opto-Barrier to Drive Boards
   One  Opto Barrier for each Driver(eg 3 for my Lathe)
   Supports  Stepper or BLDC Motor drives
   Supports  BLDC Tacho input
   Direct Break signals from Cover/Safety switch
   Contains Optical receiver for DRO Serial data 115200 baud
   The Power for Barrier is taken from the connected Drive Module
   Four input signals each from any type of sensor (+5 or +24)
   Reset  function to set zero DRO absolute

Lathe Controller:
   Uses OLIMEX PIC32-HMZ144 module with hardware floating point
   Price is only 30$ ((Electro Kit Sweden)
   Shield board with switches and led for the front panel
   4x20 char Display with Scroller and 4 keys
   One MPG wheel
   12 Key pad
   4 Opto-barrier connectors for 3D milling machine and BLDC
   Safety Keylock interface (Type car starter)

Lathe Software:
   Built on Microchip Harmony free framework
   All written "ground up" in C with  Microchip free tools
   Non Blocking code with ca 25 uS loopTime
   Uses Bresenham's line algoritm (Like all the rest of the world)

Lathe Hardware:
   Built using SIEG C3 Lathe Spare parts (from Arc Euro Trade Ltd)
   90% of Conversing Parts done  with Lasercut from  DXF drawings
   Those can be reproduced by any local metal sheet company
   All  Drawings are made in the free DraftSight CAD

24

A20 / Re: Battery level on Lime2

« Last post by ronin07 on September 16, 2018, 10:55:19 AM »

Another option is talking to AXP chip via I2C which is a bit more complicated. I am sure i saw that thread once in some forum - do some forum search. Sorry couldn't find the link to that forum thread. Google might become your lifesaver.

25

TERES DIY Laptop / Re: display cabinet files? In which program?

« Last post by oeren on September 15, 2018, 09:06:06 PM »

Thank you.

you are looking for are the design files for the plastic laptop enclosure.

Yes.

https://github.com/forksand/olimex-teres-case

I opened them in freecad.

unpublished case designs

I do not know the cad programs. I do not know how to calculate materiel strengths.
Therefore I likely cannot do much.

For illustration.
https://www.youtube.com/watch?v=9xGywF2ZRZY
I do not know if the cabinet is a registered design. If it is not
I likely cannot get the cabinet's cad files.
I want a 10 inch cabinet to be made which can accommodate the rock64 and other arm
mainboards. I have spoken to a design school which in the realm of its teaching
may want to design such a cabinet. I was looking for the olimex notebook's
cabinet cad files because I wanted to give them a basis to start from.






   

26

TERES DIY Laptop / Re: buy the cabinet?

« Last post by oeren on September 15, 2018, 06:28:15 PM »

I thought maybe you can buy all cabinet parts in one order. Instead you have to order
part by part.

27

iMX233 / Re: New OLinuXino-Maxi

« Last post by anhcsueb on September 15, 2018, 07:39:56 AM »

Sorry i found the issue. My baud rate is not at the correct setting: 115200 baud, 8-N-1

I see correct display now.

28

iMX233 / New OLinuXino-Maxi

« Last post by anhcsueb on September 15, 2018, 07:24:01 AM »

Just bought a new New OLinuXino-Maxi and an SD card with Linux, and a power supply and a USB-to serial- F . All on olimex website.

I followed instruction, installed USB driver etc, no errors. Insert SD card, power on, wait 4-5 seconds then plug in USB to Serial cable.

all i get from putty screen is this: no linux log in screen

▒E▒▒▒▒▒▒1b▒P▒▒b_▒▒▒w▒▒▒▒▒▒▒▒▒▒(Cw▒▒▒▒▒Ba@r1▒XB&(▒+▒)HSJ▒▒▒▒R▒▒▒▒Cf▒▒▒▒d!▒▒▒▒C/▒▒▒̭|▒1▒u▒▒▒▒!E▒▒L▒▒▒▒▒▒▒▒▒HL▒▒▒▒▒!▒▒▒▒Cƃ▒▒▒▒▒▒▒=▒▒▒▒      $▒▒▒▒▒▒▒NR▒▒1'▒B▒▒|▒▒  ~@7▒3▒

Green led blinks steady, and a red led stays lit.

Anyone know what i am doing wrong

29

ESP32 / Re: ESP32-POE

« Last post by mdburmeister on September 15, 2018, 12:15:47 AM »

Thanks for the IDF example!

To get the Arduino library working, just add these #defines before your #include <eth.h>:

#define ETH_CLK_MODE ETH_CLOCK_GPIO17_OUT
#define ETH_PHY_POWER 12

This will make the ETH_LAN8720.ino sample work.

These boards are awesome.  Thanks Olimex!!

30

TERES DIY Laptop / Re: buy the cabinet?

« Last post by JC on September 14, 2018, 09:57:21 PM »

One awesome thing about this laptop is that you have the ability to easily purchase individual parts.  Here is a link to the page listing everything you can purchase individually: https://www.olimex.com/Products/DIY-Laptop/SPARE-PARTS/