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Arduino 4WD Robot Car

Written by Chris Despoinidis
Monday, 20 July 2015

Update: 20/07/2014




Video demo

A 4 wheel drive robot car using Arduino as microcontroller, 12v li-ion rechargable battery, a Bluetooth serial communication for receiving commands wireless.
Basic function forward, backward, stop, left and right turn.

Ultrasonic sensor for distance measuring Front mounted on a servo to look right and left

A LCD 16x2 screen for displaying messages

a Five Channel Tracing Photoelectric Sensor Tracking Module Infrared Detection for line tracing
a speaker buzzer for simple audio
a Laser 650nm
a laser sensor activated when hit by a laser beam
a light detector
Bluetooth Serial Com

I made a Scratch like program to program the robot to do and respond through its sensors Program commands are send remotely via Bluetooth

Last Updated Monday, 20 July 2015

NB LAPTOP

Written by Chris Despoinidis
Friday, 27 June 2014

NB Laptop News.

2016

May 2



I tested both the RS232 with the real Newbrain Machine i manage to load through RS232 port 9 (LOAD#9).
I also tested the TTL interface with the NB Laptop this works ok too.



April 29


Here it is the final SD Card Module.
You can load and save files and there is support for RS232 to connect to a Real Newbrain and use the serial device #9 to load and save files.
All necessary files are at github.


March 11

I uploaded the entire NB Laptop project on Github.
It includes all the schematics, Source code on VHDL for the CPLDs, Assembly code for the z80 bootloader, tools and roms necessary to replicate the NB Laptop.
Also the Arduino code for the SD Card storage module.

https://github.com/cdesp/Newbrain-Laptop.git


March 4

I changed the code and now you can have as many files and directories as you want.
One limitation is that you can not have a directory within a directory at least for now.
Also i added another button STOP. this button Stops the Recording, or Playing of a file (just like the old times) because i do not have a way of knowing when the file is over.
So you press Play and when Newbrain finishes loading you press Stop.
Same for Recording.

The device is working ok on the breadboard. I am waiting for the sdcard module to arrive to put everything in a box with a PCB to connect the lcd, Sd card and RS232.
I am thinking of providing two RS232 interfaces one with 5V signals and one with the real 12V -12V signals (i ll use a MAX235 for this).


March 1

The new SD CARD module for software RS232 communication between NBLaptop and Arduino works ok. I manage to load files that was selected with arduino.



February 28

I made a new device 12 that uses the RS232 module with the 16550.
The Newbrain v24 device 9 that i had to patch in order to have it use the rs232 module is now as it was before the patch.
This software rs232 device i manage to connect with an arduino (softwareserial) but with the addition of CTS/RTS because Newbrain requires these signals.
I also manage to have a SDCARD module connected to the arduino and i ll use this connection to send an receive files to NB Laptop.
Once finished this module will replace Tape 1 as the default store device.

The arduino module has a 16x2 LCD display connect through a serial adaptor to save pins.
As i said it communicates with the SDCARD module to read files and save files.
The module will also have
2 buttons PREV and NEXT to find the desired file.
1 button to "PLAY" the selected file to the NB Laptop.
1 button "REC" to save the file send from NB Laptop.
"PLAY" button will also enter any directories that the user selects.

I have a problem with the available RAM memory on the arduino so for now you can have 20 files or directories each directory can have 20 files (400 files total).



February 14

A new video that shows the 4 graphics modes of the NB Laptop with reverse field.
The program was loaded through the RS232 using LOAD#9 and SAVE#9 from the NB Emulator on the PC.

https://youtu.be/Uvrsb35XG70

January 21

Ok, I fixed the bug with "RS232 receive" so now i can send and receive bytes through comport.

Last Updated Monday, 02 May 2016
Read more...

Newbrain Hardware List

Written by Chris Despoinidis
Saturday, 19 April 2014

There is a list of all the newbrain machines out there working or not on the main menu.
Please login and add your machine to the list .

SD card to Grundy NewBrain - YouTube

Contributed by Colin Appleby
Monday, 05 August 2013

Check out the following YouTube video for the latest SD card interface to the Grundy NewBrain (working but still under development):

www.youtube.com/watch?v=3G5fARz7HnM

 

Nb Emulator 2.62

Written by Chris Despoinidis
Saturday, 18 August 2012

18/8/2012 

 

Newbrain Emulator 2.62 

 

minor fixes in rom selection  

there was en error on selecting rom 1.4 and 1.9

new feature on tools menu capture screen.

i needed this for testing the screen on NB Laptop :-) 

 

Last Updated Saturday, 18 August 2012

Old video

Written by Chris Despoinidis
Monday, 16 July 2012

Check out this video on youtube it is from BBC and shows how Newbrain was used by a pharmaceuticals company in the UK. 

 

http://www.youtube.com/watch?v=dqFya9usdTA 

Newbrain ROBOT

Written by Chris Despoinidis
Saturday, 19 September 2009

The Dutch Newbrain User Group is making a Robot based on The Newbrain.

Check Gallery for a couple of Photos from the project.

NEW *** Also Check the Links section for Videos.

Last Updated Friday, 09 October 2009

NewBrain in Angola

Contributed by Colin Appleby
Thursday, 31 July 2008
The Central Planning of Angolan Ministry of Commerce in Angola between the years 1981 to 1984 used a NewBrain Computer.It was strange that a small NewBrain with two cheap cassettes and one MX100 EPSON printer managed to recalculate all of the central plans of the Ministry of Commerce in less than 4 hours, while one IBM 370 mainframe computer costing millions could not perform the same operation in  less than 2 months, as things like "re-programming", "punching cards", "lots of energy", "High class analysts and engineers" were necessary.
Last Updated Thursday, 31 July 2008
Read more...
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Shouter

cdesp: It is sad that Colin will not see this game as he has passed away a few days ago. (Date: 10/12/2016 13:35)
cdesp: Woodcutter by Brainwave Software is available for download (Date: 10/12/2016 13:30)
Colin: To: Jim Gerrie Excellent work converting the Valley program from NewBrain to TRS-80. I checked out your Facebook. Colin (Date: 02/11/2016 01:02)
Benevolentchum: Made a TRS-80 version of "Valley." See: https://www.facebook.com/groups/731424100317748/ (Date: 01/11/2016 13:39)
Colin: Has anyone got a copy of Mallard Basic for CP/M to run on the NewBrain. (Date: 25/10/2016 12:48)
Colin: Another program we are looking for called Woodcutter by Brainwave Software. Anyone got a copy as it is MIA. (Date: 11/10/2016 13:28)

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