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My office is quite cluttered with hardware. I’ve been toying with chiplotle lately but doing so meant cleaning up my desk and make room for the big clunky 80ties plotter. Chiplotle just sends serial commands, so why not over bluetooth. I ordered a

HC06 serial bluetooth module widely available

and a

serial to ttl converter powered by USB

just hooked it up together with a DB9-DB25 convertor and it just worked… pairing the HC06 was with the code 1234, instead of OSXs default 0000. besides that, no problems.

I set my

~/.chiplotle/config.py

to

serial_port_to_plotter_map = {‘/dev/tty.HC-06-DevB’ : ‘DXY-1300’}

and of we go

The whole setup is usb powered and works really smooth. I can now leave the plotter at a convenient place in my office and play with it… wirelessly yay!

opening the MI mini wifi

two screws hold i together, opening it from there was a bit harder. You have to forcefully get underneathe four little hooks at the bottom front of the device

after opening it, all we need is accessible.

soldering a serial port on it

I used an old connector I had lying around, easy t get to the breadboard

next step involves the RPi

you can then hook it up to the RPis Tx, Rx and GND pins. As both devices use 3v3 TTL, no extra circuitry is needed

ssh over to the RPi

once your logged in, type

$ minicom -b 115200 -o -D /dev/ttyAMA0

to start a serial console on the RPis GPIOports. Once it runs, boot the mi and you should see this

now the easy part

connect a UTP cable from a LAN port directly to your computer, and assign your PC a manual address in th 192.168.1.x but not 192.168.1.1

start the http server on the mi

MT7620 # httpd
raspi_read: from:40028 len:6
NetTxPacket = 0x83FB5080

KSEG1ADDR(NetTxPacket) = 0xA3FB5080
Trying Eth0 (10/100-M)

Waitting for RX_DMA_BUSY status Start… done
ETH_STATE_ACTIVE!!
HTTP server is starting at IP : 192.168.1.1
HTTP server is ready!

Keep going WEB failsafe, rx_counter=0 , GoGoGo!!!

point you browser to 192.168.1.1

and upload your firmware…

I flashed openwrt-ramips-mt7620-xiaomi-miwifi-mini-squashfs-sysupgrade.bin

connect to internet (cable)

and start setting up OpenWRT

$ opkg update && opkg list luci-*
$ opkg install luci-ssl

$ /etc/init.d/uhttpd start
$ /etc/init.d/uhttpd enable

$ uci set wireless.@wifi-device[0].disabled=0; uci commit wireless; wifi

make sure it boots from the flash partition

by default it waits for a tftp image to be transferred, so:

$ printenv

and take a look at the env variables

$ bootcmd=tftp

this should be

“bootcmd=bootm bc050000”

so set it and save it

$ setenv bootcmd bootm bc050000

$ saveenv

now reboot, test and go and configure it

The evening was continued with Insomniark en Exoterrism both using pure supercollider and hardware controllers for quickly interfacing with the code to be concluded with a streamed set from Alex McLean. That last set showed of an impressive coding style, both fast and well executed clearly showing experience is important…

some images:

onto the next algorave Here’s the full code repo for the visuals and the full set on youtube below (atm without sound, hope to get the recording ASAP)

some pics

full video

Feedback was given from the oblique strategies themselves as they hinted me to try other things when I saw them rendered on the screen.

Code on github

obique sky

cityscape