The purpose of this guide is to help people in setting up their Raspberry Pi - NyboardV0 as a stand-alone unit for programming and controlling Nybble. With the described steps you will end up with a setup that doesn't need any external connections (apart from WiFi connection to the Raspberry Pi).
The steps will go through setting up a vanilla Raspberry Pi (RPi 3A+, 3B+ and Zero W have been tested). The intention is not to describe how to setup a hardened extremely secure solution, that's a scope of many other instructions throughout the internet. Also, the only important modification to Arduino IDE / avrdude is the installation of the autoreset function. If you have already setup your system then you can just read through steps #42-#49 and you should be good to go without the external FTDI module.
As for the physical hardware change you need to connect one of the GPIO pins of your Raspberry Pi to the NyBoardV0 FTDI connector's DTR pin. I have used GPIO 17 pin (physical pin 11) by soldering a connector to the back side of the RPi. You can then connect this connector (pin 11 / GPIO 17) to the FTDI socket DTR pin on NyboardV0 board.
So here goes the steps (again you can skip to steps #42-#49 if you just need the RPi - Arduino programming addition):
1) Download Raspbian Stretch with Desktop (for Arduino IDE compatibility) (https://www.raspberrypi.org/downloads/raspbian/)
2) Download Etcher (https://etcher.io/)
3) Write Raspbian Strecth to an SD disk using Etcher
4) Create file "wpa_supplicant.conf" to the root of the SD card (called 'boot' partition) with the following contents (change the country to match your country code and add multiple network sections if you have multiple Wifi SSIDs as in the example):
country=FI
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
network={
ssid="MyWiFiNetwork"
psk="aVeryStrongPassword"
key_mgmt=WPA-PSK
}
network={
ssid="MyWiFiNetwork2"
psk="aVeryStrongPassword2"
key_mgmt=WPA-PSK
}
5) cmd prompt -> rename wpa_supplicant.conf.txt to wpa_supplicant.conf
6) Create file called "ssh" to the root of the SD card (again 'boot' partition).
Note! The file can be empty as long as it exists
7) Insert SD to RPI, power it up and find IP address (for example from your Router)
Note! If you have access to Linux / nmap then you can use the following (similar):
sudo nmap -sP 192.168.1.0/24 | awk '/^Nmap/{ipaddress=$NF}/B8:27:EB/{print ipaddress}'
8) ssh to the pi
login: pi
password: raspberry
9) Change default password
passwd
10) sudo apt-get install vim git -y
11) sudo vim /etc/dhcpcd.conf
Add to the end of the file (change to desired static IP address / router IP / DNS IP...):
interface wlan0
static ip_address=192.168.1.234
static routers=192.168.1.1
static domain_name_servers=192.168.1.1
12) sudo service dhcpcd restart
13) sudo apt-get update
14) sudo apt-get dist-upgrade -y
15) sudo apt clean
16) sudo raspi-config
Localization -> I2 Change Timezone -> Europe/Helsinki (or whatever your Timezone is)
Network Options -> Hostname -> Set your desired hostname
Interfacing Options -> SPI -> Enable
Interfacing Options -> I2C -> Enable
Interfacing Options -> Serial -> Disable login, Enable hardware
Interfacing Options -> VNC -> Enable (this will not be needed in full headless mode...)
Advanced Options -> Expand Filesystem
Advanced Options -> Resolution -> Change to desired resolution
17) sudo vim /boot/config.txt
Add the following to the end to disable bluetooth and allow GPIO 14 and GPIO 15 to be used for UART (serial communication)
dtoverlay=pi3-disable-bt
18) sudo systemctl disable hciuart
19) sudo reboot
20) mkdir ~/Petoi
21) cd ~/Petoi
22) git clone https://github.com/PetoiCamp/OpenCat.git
23) Download Arduino IDE for Linux ARM from https://www.arduino.cc/en/main/software
Note! The version you can install with "apt-get install arduino" is too old at the time of writing!
24) cd ~/Downloads/ 25) xz -d arduino-1.8.8-linuxarm.tar.xz
26) mv arduino-1.8.8-linuxarm.tar ~/Petoi
27) cd ~/Petoi
28) tar xvf arduino-1.8.8-linuxarm.tar
29) cd ~/Petoi/arduino-1.8.8
30) ./install.sh
31) vim ~/Petoi/arduino-1.8.8/hardware/arduino/avr/boards.txt
Add the following code as instructed by Petoi Assembly Instructions
## Arduino Pro or Pro Mini (5V, 20 MHz) w/ ATmega328P
## --------------------------------------------------
pro.menu.cpu.20MHzatmega328=ATmega328P (5V, 20 MHz) NyBoard
pro.menu.cpu.20MHzatmega328.upload.maximum_size=30720
pro.menu.cpu.20MHzatmega328.upload.maximum_data_size=2048
pro.menu.cpu.20MHzatmega328.upload.speed=57600
pro.menu.cpu.20MHzatmega328.bootloader.low_fuses=0xFF
pro.menu.cpu.20MHzatmega328.bootloader.high_fuses=0xDA
pro.menu.cpu.20MHzatmega328.bootloader.extended_fuses=0xFD
pro.menu.cpu.20MHzatmega328.bootloader.file=atmega/ATmega328_20MHz.hex
pro.menu.cpu.20MHzatmega328.build.mcu=atmega328p
pro.menu.cpu.20MHzatmega328.build.f_cpu=20000000L
32) cp ~/Petoi/OpenCat/Resources/NyBoard/bootloaders/atmega/ATmega328_20MHz.hex ~/Petoi/arduino-1.8.8/hardware/arduino/avr/bootloaders/atmega/
33) cd ~/Petoi 34) wget https://github.com/jrowberg/i2cdevlib/archive/master.zip
35) unzip master.zip
36) rm master.zip
37) wget https://github.com/maniacbug/MemoryFree/archive/master.zip
38) unzip master.zip
39) rm master.zip
40) Start Arduino IDE
~/Petoi/arduino-1.8.8/arduino
Tools - Manage Libraries
Install Adafruit PWM Servo Driver, IRremote and QList
Sketch -> Include Library -> Add .ZIP Library...
~/Petoi/i2cdevlib-master/Arduino/I2Cdev
~/Petoi/i2cdevlib-master/Arduino/MPU6050
~/Petoi/MemoryFree-master
Tools -> Board: "Arduino Pro or Pro Mini"
Tools -> Processor: "ATmega328P (5V, 20 MHz) NyBoard"
Tools -> Port: /dev/ttyAMA0
41) cd ~/Petoi
42) git clone https://github.com/deanmao/avrdude-rpi.git
43) cd ~/Petoi/avrdude-rpi
44) sudo cp autoreset /usr/bin/
Note! autoreset already has the default DTR reset pin set at (physical) pin 11, which I've used also. You can change it if you want/need.
45) sudo cp avrdude-autoreset /usr/bin/
46) cd ~/Petoi/arduino-1.8.8/hardware/tools/avr/bin
47) sudo cp avrdude /usr/bin/avrdude-original
48) mv avrdude avrdude-ORIGINAL
49) ln -s /usr/bin/avrdude-autoreset ./avrdude
All done! Now you can use Arduino IDE as you would use it with the external FTDI module. "autoreset" script takes care of sending the proper DTR signal at the proper time through RPi GPIO 17 (physical pin 11), which you wire to NybbleV0 board's FTDI socket's DTR pin.
Hey @antti.havulinna @Rongzhong Li @3dp @leukipp @Lilie Boizumault, has anyone had any luck doing the same for Bittle and recent Arduino? I encountered the same avrdude issue as was mentioned above by several persons.
avrdude-original: Version 6.3-20190619 Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/ Copyright (c) 2007-2014 Joerg Wunsch System wide configuration file is "/home/ubuntu/.arduino15/packages/arduino/tools/avrdude/6.3.0-arduino17/etc/avrdude.conf" User configuration file is "/home/ubuntu/.avrduderc" User configuration file does not exist or is not a regular file, skipping Using Port : /dev/ttyS0 Using Programmer : arduino Overriding Baud Rate : 115200 avrdude-original: stk500_getsync() attempt 1 of 10: not in sync: resp=0x30 avrdude-original: stk500_getsync() attempt 2 of 10: not in sync: resp=0x0d avrdude-original: stk500_getsync() attempt 3 of 10: not in sync: resp=0x0a avrdude-original: stk500_recv(): programmer is not responding avrdude-original: stk500_getsync() attempt 4 of 10: not in sync: resp=0x0a avrdude-original: stk500_getsync() attempt 5 of 10: not in sync: resp=0x30 avrdude-original: stk500_getsync() attempt 6 of 10: not in sync: resp=0x0d avrdude-original: stk500_getsync() attempt 7 of 10: not in sync: resp=0x0a avrdude-original: stk500_recv(): programmer is not responding avrdude-original: stk500_getsync() attempt 8 of 10: not in sync: resp=0x0a avrdude-original: stk500_getsync() attempt 9 of 10: not in sync: resp=0x30 avrdude-original: stk500_getsync() attempt 10 of 10: not in sync: resp=0x0dNote that I'm on headless Ubuntu 20.04, RPi Zero 2 W. Reset pin was assigned to GPIO 26. Also note that arduino-cli doesn't recognize the NyBoard. Wondering what option should I use there?
I tried the following 2 w/o luck:
arduino-cli upload -p /dev/ttyS0 -b arduino:avr:pro:cpu=20MHzatmega328 OpenCatarduino-cli upload -p /dev/ttyS0 -b arduino:avr:uno OpenCatYes, I think this post has shown some successful efforts. But I haven't tried it myself.
Hi,
Thank you for your post.
As for the change in the hardware, along with the pin connection, may I ask which battery did you use for the RPi?
Does that mean I can either make changes to Nybble.imo and upload to the EEPROM, or extend ardSerial.py which controls Nybble directly? At the moment, I've just been following the guides and not inspected either code files at all.
Edit: I've just had a quick look at ardSerial, and it looks like the code just sends command tokens to the Nyboard?
Hi all,
Do I still need to do this if I want to program Nybble through my RPi0? Nybble is currently controlled via my RPi as per the original set up instructions which says the RPi takes over the serial communication, yet this post suggests creating a connection between the NyBoard DTR pin and GPIO17..
Thanks!
I ended up soldering the FDTI module to the underside and using usb, rather now solder more wires. But thanks, this really helped!!
I had to source memoryfree from : https://github.com/McNeight/MemoryFree.git
A note if wifi doesn't work for you: You need to tell the new image where to find the wpa_supplicant file.
I believe I've followed the instructions properly, yet i keep getting "avrdude-original: stk500_recv(): programmer is not responding" on a NyBoard V2/Raspi3 B+ setup when trying to upload.
Hi, i've followed these instructions, and can compile and upload code from the Rpi to the Nybble_02. For example the buzzer, and it works. However, I cannot communicate with the servo motors, any advice/tips? thank you.
This is the schematic of DTR and RESET on Arduino Pro mini. They are both using low voltage to trigger the reset behavior, but the C2 will bring some timing feature on the DTR. I read some articles about the differences between different OS and FTDI uploaders. That C2 just ensures the DTR can go up high after the initial low signal. So I still feel it's promising to replace the current RST pin in 2x5 socket with the DTR, and use it to send a low signal to RESET of Arduino. Although it will take a short time for C2 to discharge and bring RESET to low.
Of course it needs experimental validation. Try to set your current GPIO17 low for 1 second, and see whether the NyBoard will reset?
Is it ok if I move your post under hardware category?
Thanks for sharing!
I was thinking using Pi's USB port to connect FTDI. In that case I still need to plug and unplug the uploader for later serial communication. Your solution saved that USB port and make the 2x5 port 2-in-one for uploading and communication!
The current 2x5 socket is like:
The RST is connecting the Reset of Ardruino, and the GPIO4 of Pi. It's for allowing Pi to reset the NyBoard if it detects some abnormal behaviors. Do you think this can be connected to DTR? Would it still be able to reset the NyBoard from Pi?