Category: vibrator

The new BI2 black vibrator development board

The new black BI2 board is ready. I have a few assembled boards ready for shipping. Have a look at www.tindie.com

3 JST 1mm plugs (battery, motor 2, motor 3), LED, reset button, M+/M- is for motor 1

JST 1mm plug for motor 1, alternative RESET button

Features

  • ESP8266 Microcontroller with WLAN
  • MPU9250 (accelerometer, gyroscope)
  • LiPo battery charging
  • 3 motors can be connected (simple motor driver circuits)
  • 1 WS2812B LED – a  colourful LED (16 Mill. colours). They are commonly known as Adafruit Neopixel – a strip or a ring of individual programmable LEDs (when use the WS2812B only two motors can be connected)
  • design based on the great Adafruit Feather Huzaah ESP8266
  • vibration motors and LiPo battery can be easily connected with JST 1mm connectors
  • two reset buttons (the button next to the USB connector can be overmolded)
  • USB connector for battery charging and code uploading
  • programmable with the Arduino IDE or NodeMCU
  • white LED for indicating charging
  • standard LED (yellow) on GPIO00
  • round 40mm diameter

 

There are 3 free GPIO ports. Standard layout are for driving 2 motors (GPIO 12 = M2, GPIO 13 = M3) and 1 LED (GPIO14). Alternatively you can use 3 motors (GPIO12,13,14) but no LED.

Standard: SJ2 not connected, SJ3 connected

Alternative: SJ2 connected, SJ3 not connected

 

Here is the schematic which is adapted from Adafruit.

References:

  • Quick start up guide with Blynk app is here
  •  Assembling a silicone molded vibrator with 3D printed form – tutorial here
  • Complete guide including wireless charging, control with Node-RED and data transmission via MQTT is here

Sex toy patents arrived in the EU

Recently the EAN magazine interviewed Frank Ferrari from we-vibe. The US company was granted the patent EP1824440. They applied in 2005. It took so long “at least in part to the filing of several third-party observations”. The patent is for a couple vibrator with a specific form. A couple vibrator is defined as a sex toy which permits sexual intercourse while inserted into the vagina.

Is this a patent which will destroy open-source sex toys in generel as it happened to Comingle? I don’t think so. You can still make a vibrator and sell it as long as it doesn’t have the form and functionality.

But: If you are interested in building couple vibrators (like we-vibe define them) then you have a problem. I don’t think the patent forbids every sex toy which can be inserted into the vagina while having sexual intercourse  (sorry, but what is new about this??).

But if you design a similar form, equip it with vibrators then you definitely should consult your patent lawyer before selling it.

What is the unique about the form? Is it an innovation by we-vibe? Or is it rather a negative copy of a part of what we call genital area?

Or it is like giving a patent for T-shirts? A negative copy of the human upper body…

we-vibe-claim-1-700x350

Maybe this is not a good example to blame patents. Maybe the EU patent agency has done a good job to grant a rather specific than general patent. Maybe we-vibe had enormous R&D efforts. Or they need enourmous effort to bring it into the market. And then a company makes  a copy and sells it for the half of the price? Ok, then the we-vibe patent is ok.

My opinion:  Patents are not good for innovation. They prevent innovations to become reality. They hinder competition. They support rich companies with large law departments. They promote lawyers and the economy of patents.

New small fusion vibrator

fusion-small-side-viewThis is a small version of the fusion vibrator. The small fusion form for molding can be made with 3d printers with smaller volume. In addition the inlay for the body interaction development board is reduced in size, but there is still enough place for board and battery. Only about 120ml silicone are needed. The form was constructed in Tinkercad.

Modify the form in Tinkercad: all forms, inlay only, form only

Download the STL files for printing: round_something_06_final_inlay_improved. There are some artifacts but printing is fine on the daVinci 1.0.

Download and discuss in Thingiverse: http://www.thingiverse.com/thing:1589075

round_something_06_final

Please follow the instruction from the large fusion vibrator. When you poor the silicone into the form it is very important to keep the USB connector free from silicone. Even very small amounts can cause the USB connector to break apart from the board.  When the USB connector is broken then you cannot recharge the vibrator. Also be always very cautious when you plug-in or plug-out the USB connector.

Finally you can remove the overhanging parts from the inlay.

fusion-small-top-view

 

New vibrator design “fusion”

 

fusion-quer-look-throughbodyinteraction designed a lot of vibrating toys, some are usable as massage devices, some are explicit sex toys (vibrator ring, balls), some are experimental (collar). Everyone is motion controlled. If you have more than one they will influence each other remotely, eg. a vibrator and a vibrator ring.

unboxing-3

But a device like a classic big vibrator is still missing. So we designed the “fusion” which is approx 19cm long and up to 4+cm in diameter. It is called fusion as the case is made of silicone and 3d printed material (ABS).

fusion-quer-2

We have put the body interaction vibrator development board, motor and battery in a silicone form. There is an on/off switch – so when you travel the vibrator doesn’t wake up when it is moved. And you can charge the battery with a USB micro connector. There is a spacious inlay for the electronics, so it will be easy to get it done.

Pros:

  • easy to charge the battery via USB
  • on/off switch
  • hard handle
  • flexible upper part
  • large (if you like this)
  • ISP interface (“hacker port”) accessible

Cons:

  • only the silicone part of the form can be put under water for cleaning

What do you need?

  • 200 ml silicone with high shore A rate, eg. shore A 45 from silikonfabrik.de
  • optional: special colour for silicone molding
  • 3d print of the molding form, inlay and closure
  • tinker wire
  • body interaction vibrator development board with LiPo and motor (or similar Arduino boards)
  • bin for preparing the silicone, something to stir the silicone

How much is it?

  • Board, battery, motor: 30$ (buy at Tindie)
  • Silicone: 10$
  • 3d Prints: less than 5$

Step by step instructions

Step 1: Print out the inlay, the form and the enclosure

round_something_05_final

Download as zip-file: Fusion

Download at Thingiverse: http://www.thingiverse.com/thing:1505539

Step 2: Prepare the inlay: Insert the body interaction board and the LiPo battery

The body interaction vibrator development board is inserted into the provided rails. It it doesn’t fit in use a file to remove printing artefacts. Use some glue to fix the board. Then insert the battery and fix it.

Important: The Micro USB connector must be above the upper part of the inlay.

inlay with description

Step 3: fix the wires of the vibration motor

The vibration motor will hang down from the inlay as the inlay will be put in the form upside down. You can influence the position of the motor by shortening the wire or fixing the wire to e.g. to the battery. In this case the wire of the motor was threaded between battery and board. Therefore the  motor will be in the middle of the vibrator.

inlay-inner-partfusion-looking-through-2in the center there is the overmolded vibration motor

Step 5: Prepare the form

Use some tinker wire to “press” both parts of the form tight together.molding-form-emptyUse some wax to fix little holes in the form where the printer failed. (These are the white spots)

drying-form-with-wax

Step 6: Insert inlay into the form

There must be some space between inlay and form for the silicone.

Remark: The two wedge like forms at both sides of the inlay help to hold the inlay. The wedge can be removed after molding.inlay-in-molding-form

Step 7: Cast the silicone

Prepare the silicone as the producer recommends. It takes some time to pour the large amount of silicone into the narrow form. The silicone we use must be used within 10 minutes. So start at once after preparing the silicone.

Important: The USB micro connector, the switch and the ISP connector shouldn’t be dashed with silicone. If this happens remove the silicone. Maybe some silicone will remain behind. This can be removed later when the silicone is solid.molded

The battery is covered with silicone, the USB connecor and switch are not.drying-seen-from-top

Step 8: Remove the form

Remove the tinker wire. Remove overhanging part of the silicone. Carefully tear both parts of the form away. You can use a knife, but be careful not to “hurt” the vibrator. Remove overhanging silicone at the vibrator. Also remove the two wedge like forms at both sides of the inlay.

unboxing-fusionfusion looking through complete

Step 9: Install the closure

Now you can put the closure on the inlay. Fix the closure with glue. (Be careful! The USB connector is not very strong.) closed-inlayround_something_055_final_cap_onlyfusion-closure

Tinker, share and download from Tinkercad:

form and inlay: https://tinkercad.com/things/b8nQxRn4XWl

closure: https://tinkercad.com/things/dhgtgeaYG0B

Download as zip-file: Fusion

Download at Thingiverse:

http://www.thingiverse.com/thing:1505539

 

Update for “balls revisted” – silicone molded vibrator

balls-revisited-v3-wit-v4-inlay-blueThe “ball revisited” silicone molded vibrator uses a wireless charging module. Unfortunately there are different version available. The version with some textile like cable jackets have a different inner radius of the receiver coil.new-inlay-from-topWe have changed the mounting on top of the picture as this type of the receiver coil needs a little more space. In addition the encasement is a bit larger. new-inlay-seen-from-side-BThere is enough space for the body intercation board (top), wireless charging board (right) and the LiPo battery (below).new-inlay-seen-from-side-BFinally the wire of the vibration motor is glued in the middle of the encasement.new-inlay-from-belowPlease follow the “old” instruction – nothing has changed. When printing out the 3d parts use the new version 4 of the inlay. All 3d printing STL files at Thingiverse

 

Silicone overmolded vibrator – balls revisited

molded-quermolded-with-ueberh-querBuilding your own silicone molded vibrator becomes now easier. We already have presented 3d printed forms for building your personal vibrator (massage wand, wireless charged vibrator). The vibrator uses the body interaction vibrator development board. The body interaction board has a Arduino compatible microcontroller, vibration strength control by motion, a vibration motor and a rechargeable battery.

 

balls_revisited_3_inlay_part_bWhat is new? The electronics including battery are in the base of the vibrator. We developed a 3d printed enclosure for the electronics. This has several benefits: The assembling of the electronics and the molding itself is easier as everything is fixed within the enclosure. And it is more safe as the enclosure shields the electronics from the environment (and vice versa). In addition we used a different charging module from Seeed Studio. The input voltage is only 5V. Now you can connect the charging module with a USB connector and don’t need another power supply. (Look here for an explanation of wireless charging sender and receiver.)

overmolded-vibration-motor

Another improvement is the placing of the vibration motor. The vibration motor can now be placed in the center of the vibrator and it different heights. Just were you need the power.

balls_revisited_3_inlay_part_aFinally the mounting is improved. The mounting holds the enclosure when it is inserted into the form.

balls_revisited_3_finalThe mounting (together with the enclosure with the electronics) is inserted into the form. The form consists of two parts which must be fastened together by tinker wire. It is a variation of the ball theme.

We present a step by step procedure for tinkering the vibrator. You need:

  • 3d printed form (molding form, 2 parts)
  • 3d printed enclosure
  • 3d printed mounting
  • body interaction vibrator development board
  • silicone with a high shore A value (eg. shore A 45 which is quiet hard but still flexible), approx. 100 ml
  • wireless charging module eg. from Seeed studio
  • soldering station, (hot) glue

Step by step procedure:

A. Print out all forms. You can download the forms from Thingiverse.

wireless-charging-sender-and-receiver-line-pf

B. Connect the wireless charging module to the body interaction vibrator development board.

B.1 You have to solder a wire connecting (-) on the wireless charging module and GND on the body interaction board.

B.2 Now comes the tricky part. You have to connect (+) from the charging module with the body interaction board. Solder a wire at (+) of the charging module. But where do you solder the wire on the body interaction board? Unfortunately the wireless charging option was not taken into consideration during the development of the board. So there is no appropriate connection on the board.

circuitThe best solution is to unsolder the USB connector and connect to + of the USB connection. The easiest way to unsolder the surface mounted USB connector is done with a hot air soldering station.  Alternatively you can solder the wire directly to the MAX1555 module – this solution is presented here. In any case: Be careful not to break the tiny pads connecting pcb and USB connector.

B.3 Connect the sender module with a 5V power supply. You can use a USB cable, dismantle the cable and connect the black and red wires.

inlay-with-coil

C. Place the receiver charging coil on top of the enclosure. The diameter of the top side is a bit larger than the diameter of the bottom side. Use some glue to fix the coil. Don’t fix the mounting now. It is easier to do it later (step E).

enclosure

D. Put the electronics into the enclosure: Begin with the body interaction board. The RFM12b is quite large so place it at an outer position. Then insert carefully the LiPo battery. Don’t force it! The plugs for the battery and the motor could break. If you have done so insert the tiny wireless charging receiver board. At the end fix the wires of the vibration motor in the middle of the enclosure.

E. Connect the mounting with the enclosure. There are 2 holes provided where the mounting fits into the enclosure. Use some glue to stick together both parts. (see picture above step C).

 

form-unfilled-with-inlay

F. Put together both parts of the molding form. Use tinkering wire to attach both parts tight together. Then insert the enclosure into the form. Check the wireless charging function. The yellow LED must be on when you place the charging coil over the receiver coil.

molded-form

G. Now poor silicone into the molding. We use Shore A 45 silicone which is rather hard. The silicone has to dry for some hours or days. Read the instructions of your silicone provider.

opening-form

H. When the silicone is hard, you can remove the tinkering wire. Then carefully remove the form.

form-removedform-molded-top-down

I. Remove the overhang.

wireless-chargin-test

J. Test the wireless charging. The orange LED must be on when both coils are near together.

molded-bottom IMG_20160303_184830

K. Remove the mounting.

 

Design your own forms using Tinkercad. Start now and share!

Old versions of the enclosure:Enclosure & mounting togther, Enclosure , Mounting

Download the STL files for 3d printing from Thingiverse.

Update 2016/03/12: Added image of circuits showing where to solder the wireless charging module.

Update 2016/04/05 redesign of mounting and enclosure due to different versions of the wireless charging receiver coil

Programming Tutorial part 4: Sinus

Nervous Optic by Ben Felten, CC BY-ND 2.0

Nervous Optic by Ben Felten, CC BY-ND 2.0

In tutorial 3 – “ramps” we learned how to repeat instructions again and again using the for statement. In this tutorial we need the for loop again, bur instead of changing the motor speed by a constant value we want a more dynamic behavior. Therefore we use the sinus function – a classical pattern used for controlling vibrators.

Here is a straight forward approach:

for (float i = 0; i < 20000; i = i + 0.05) {
  analogWrite(motor, (sin(i)); //motor speed set to sin(i) 
} 
delay(20); 

We are changing the variable i in small steps of 0.05. So the variable i will become 0, 0.05, 0.1, 0.15, 0,2 … and so on.

But this doesn’t work. Let’s have a look at the sinus function. Just use the google search and type in “sin(x)”. You will see  the following curve:

sin(x) in google

There are two problems:

  • There are values below 0 (on the vertical or y-axis). If the value is 0 or below 0 the motor is off.
  • The maximal value is 1. But  we need values between the minimal motor speed (around 40) and the maximal speed (always 255).

You can try to adjust the function and visualize it with google search. Maybe you will discover an interesting variant of the sinus curve.

We use the following function:

(sin(x)+1) 0.5 * (maximal motor speed – minimal motor speed)) + minimal motor speed

  • Sin(x)+1: add 1 to get positive values only between 0 and 2 instead of -1 and 1.
  • Multiply by 0.5: get values between 0 an 1 instead 0 and 2
  • Multiply with maximal motor speed  (255) – minimal motor speed (40): values are now between 0 and 215
  • Add minimal speed: values are between 40 and 255. So the motor will always be on.

 

google_sin

This is the script. Please have a look at tutorial 2 if you don’t know how to upload the script.

 // www.bodyinteraction.com tutorial sinus 
int motor = 3; 
int minimal_motorspeed = 50; 

void setup() { 
  pinMode(motor, OUTPUT); 
} 
void loop() { 
  for (float i = 0; i < 20000; i = i + 0.05) { 
    analogWrite(motor, ((sin(i) + 1) * 0.5 * 215) + 40); 
    delay(5); 
  } 
} 

If you want to slow down the changes in the motor speed change delay(5) and take larger values.

Go back to tutorial 3: ramps

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