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Jeff’s Arduino Blog

Suit Success, Refurbishment…
Tuesday, August 30, 2011

Flight Suit Works!
Wireless Function Gold 1 Gang 1 Way Wall Touch Switch Floor Lamps– Test foot “A” and “B” strips Velcroed to shoes; hook and loop glue needs to be cured by tonight.
– Finish remote control: straighten display, sand outside, glue top layers.
– Tidy up buttonhole wiring and shift bands to correct alignment along Velcro loop bands.
– Finalize light strip lengths: clip any extra length and seal ends.
– Come up with a greater remote control attachment… clip hook Velcro
– Make a cover for the ZX-Sound audio input board.

Wednesday, August 24, 2011
(F)Light Suit Progress: Almost There!

– I got the MOSFET boards and built three– they worked immediately! As expected I needed resistors between the 595 outputs and the MOSFETs; did not notice that until I hooked up the third one and things weren’t behaving. I’m not crazy concerning the screw terminals but they’re going to be OK.
– Testing the MOSFET outputs with all 22 segments– 53′ of light, so bright! The primary tests were just “All Fade” mode.
– Expanding this system to sense arm angles. The routine automatically sets arm levels, either up/down or matching angle, and what number of levels there are (since arms up can create a brand new level).
– Adding a proper “Rolling” mode to sweep a band or bands over the whole suit, top to bottom, with variables delay (ms), brightness, direction, and variety of bands (density). Seeing all of the bands rolling through was a relief.
– Sewing is awesome. I’ve sewn 10 out of 19 “loop” side Velcro bands into the suit: both legs and the hips and waist.
– ZX-Sound works! Filtering and sampling will be the last things I dial in, but I’ve working bouncy light code, smoothed and at whatever Hz I need, dynamically computing the high and low so it is going to bounce if it’s quiet or loud.

– Integrate audio sketch into main line, finish filtering code, and use filtering code for gravity sketch,
– Finish sewing hook-side Velcro strips onto the suit,
– Cut the loop-side Velcro for the light strips and stick it on with silicone,
– Measure and cut and route in-suit leads: 4 solder points each, 6 pieces of shrink,
– Sew in conduit for left-to-right board, battery, audio, and accelerometer leads.
– Address shoes, hat(s), headband mounting and routing…

Thursday, August 11, 2011
Nanode: Arduino-compatible with Ethernet

Not all rotary encoders are created equal…

    The LCD117 was getting its updating commands too quickly, so chose to reset instead of display, and
    the rotary encoders make contact so quickly when stepping up or down, my debounced code for bigger rotary encoders with more even click timing wasn’t working.

Wednesday, August 10, 2011
(F)Light Suit Major Components

Wednesday, July 27, 2011
Ethernet Arduinos (and Compatibles)

– There’s finally an official Arduino Ethernet ($60), complete with RJ45 port. It has an FTDI cable header for programming (no USB), a microSD card slot for storage, and there’s an optional PoE daughter card.
SparkFun also released an Arduino-compatible board with ethernet, the Ethernet Pro ($55), but without the SD card slot. It’s less cluttered than the official board, hopefully the value will come down as more people build projects around them.
– Additionally, the Freetronics EtherTen ($70) includes a microSD slot and (mini) USB interface.

Tuesday, July 26, 2011
More ‘duinos on the Spreadsheet

Three (!) clock boards from Wise Time With Arduino: Wise Clock 3 with a 32×16 Red-Green LED display (from Sure Electronics) has many alternative modes, including Pac Man, game of life, Pong, and… make your personal!

ClockTHREE Junior (aka C3Jr), a collaboration with WyoLum, which is just like the QlockTWO readable clock.
DWex, “Duino Look ahead to experimenters”– chock stuffed with SMD LED goodness; this actually came out last year but I missed it.

Monday, July 25, 2011
(F)Light Suit Progress: PWM!

Sunday, July 17, 2011
LED (F)Light Suit: Ramping Up

– Suit electronics: Arduino core, I2C port expander w/PWM output using PCA9685 16-channel, 12-bit PWM I2C-bus LED controller driving power MOSFETs, one per segment. There are 17 segments in my design, so I am going to use the port expander after which another spare pin to trigger the 17th channel.
– Audio metering: I’ve a MaceTech Shifty VU shield working but I’m wondering about adjusting levels on the fly, and the right way to best get a mic input to it or something similar. There shall be other modes for sequencing the lights, but bouncing VU meter is the first mode I’m on the lookout for.
– Segment planning: location and length of each segment, power lead routing, attachment to suit. This goes well, with the primary seven (of 22) segments cut and tested last night from my first 5M strip from DealExtreme; the suit will need 53′ of light strip so I’ve ordered more.
– Power: rechargable 12V power packs are easy to get; unsure the right way to recharge them on the Playa.
– Remote control: want to have a small, wireless remote to regulate modes and mode parameters.
– The program: I have an inventory of modes I might like to modify between, some of which have parameters digital timer switch for lights I am going to want to regulate on the fly. Ideally I am going to be capable to edit this system in the course of the day if I come up with new ideas while I’m in BRC.

Saturday, July 16, 2011
What’s “Minimalduino”

1. a minimal hardware design for an Arduino-compatible board. At heart, it is vitally just like the Dorkboard, but
2. designed to match the form factor of the “official” Arduino boards so users can benefit from the numerous, many shield boards designed to suit on top. While (awesome) boards like EMSL’s Diavolino are also low-cost and shield-friendly, I wanted to explore
3. optional hardware configurations, with different power connector options (pin headers, JST connector, barrel jack, screw terminals, or mini USB jack), 5V and 3.3V power regulation and optional voltage switching and regulator bypassing, and options for crystal and caps or a resonator. I also wanted to have
4. better shield-friendliness by placing LEDs (power and D13) and the reset switch (side switch or top switch) on the edges of the board, and lastly, I wanted the board to be
5. single-sided, home-etchable with wide traces and minimal jumper wires. There continues to be work to be done to cut back jumpers, however it improves on the the S3V3 “Severino” board which doesn’t match up size-wise (it is bigger), the standoff mounts do not match, and it uses a DB9 serial connector instead of the now widespread FTDI USB-serial breakout cable.

Thursday, June 16, 2011
3-Digit 7-Segment Display With an SAA1064

Wednesday, June 15, 2011
Minimalduino 105: Nice!

– Move the ability input components to present electrolytic capacitors more room to accomodate shorter/fatter ones or taller ones mounted horizontally. As it is, the 100uF cap at the input is jammed between the .1uF cap and the barrel jack. [done]
– Rotate LED’s so they can be mounted horizontally for better side viewing when using a shield. [done]
– Add heat sink polygon and vias under the 7805 tab.
– Fix the Sparkfun mini USB through-hole part: its outline is on the bPlace layer, not tPlace where it belongs. Or just use a special part. [done]
– Check female header drill diameters.
– Add 2-pin header on the reset button to make it easier to add a remote panel-mounted reset button. [done]
– Round the corners; looks nice on the Freetronics boards. Also check Uno outline and drills to verify things are lined up right. [done]

Monday, May 16, 2011
MinimalDuino 107 Pattern

Monday, May 9, 2011
Minimalduino v.105: Curvy Trace Fun

Friday, February 25, 2011
Spreadsheet: “Date Added” Column, More Boards

Six boards by the Indian company Bhasha, all through-hole apart from the FTDI USB chips, mostly simple designs but it’s clear from the traces that the boards were reworked slightly. Interesting to see the “Severino” Single Sided Serial V3 design offered on the market, something I have never seen elsewhere.
Zigduino by Logos Electromechanical is offering their first run of IEEE 802.15.4 radio-equipped boards for $70. I have been looking forward to these boards popping out, but the price seems high on condition that you might buy an Arduino FIO for $25 and an XBee module for $19, so $44 total, or a Freakduino Chibi for $33. I hope the high price is only for this first run and that it’s lower when Logos goes into full scale production, but I also wonder if it is as easy to use because the widely available XBee modules for which there are lots of example sketches available. It does have XBee “Pro” capabilities though, and I’m not familiar enough with 802.15.4 to actually compare it to other offerings. I look forward to more complete documentation on its specs together with full design files since it’s unclear what its equipment and capabilities are.

digital timer switch for lights

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