SOCBOT - The Next Generation Vibrobot

Step 1: THE PARTS

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1 - PICAXE -08M
1 - 16 Pin Wire Wrap Socket
1 - 16 Pin DIP Socket
1 - 8 pin Dip Socket
2 - Vibrating Pager Motors
1 - TSOP4838 or similar 38KHz IR Receiver Module
2 - General Purpose 100V Signal Diodes
3 - L1154 Watch Batteries
1 - 4.7mfd Capacitor
2 - 82ohm 1/4 Watt Resistors
1 - 33K ohm 1/4 Watt Resistor

wire, thin metal shielding, super glue

Comments

[astrozombies138]

is there anyway to make the picture bigger? the schematic file is a .tmp and I can't open it.

[biochemtronics]

Just under the schematic is a little block that has a file icon and Soc Bot Schematic.emf inside it. That is a meta file. If you click on that box a much larger, scalable, and easy to read schematic will appear.

[crbyte]

I have linux and it looks like does not know how to open the file... any chance that you put a jpg or png or bmp or gif or ascii schematic?

thanks

[astrozombies138]

gah, I'm on a mac, maybe thats why I'm struggling with this. My computer does not know how to open the file, do I have to convert it to .EMF?

[biochemtronics]

I know nothing about a mac. Just private message me your email address and I will send you the file. I think it is jpg or bmp. Will a mac open either of those.

[astrozombies138]

both, thank you very much.

[ppsailor]

HI Biochemtronics ! In the parts you mention 2 diodes. where they go placed the diodes? in the diagram they do not appear. ppsailor

[biochemtronics]

Good catch there ppsailor. In step 2 you will find the following: "a fast acting signal diode in parallel with each motor helps sink the induced voltages created by the motors". I forgot to include them in the circuit schematic. I found that with the low voltage, current, and small motors used in this project, the diodes can be left out of the circuit completely without causing a problem.

[ppsailor]

ohhhhhhhhhh yes , sorry, nonlaw with care... thanks.... I little feel… it by my English. ppsailor.

[astrozombies138]

on the IR reciever, do you need a 100 ohm resistor? and I've never soldered with microcontrollers before, do i connect the gnd from the batteries to the 0v pin and the gnd from the IR reciever to the serial in pin?

[biochemtronics]

Yes - you do need the 100 ohm resistor. The gnd from the batteres does go to the 0v pin (pin 8 on the picaxe). Negative, ground, and 0 volts are just different words that describe the same thing. As for the gnd from the IR receiver going to the serial pin - no way. The schematic shows the IR receiver gnd going to the same grn as pin 8 and the negative battery terminal. You may want to consider asking a friend with some microcontroller or soldering experience to give you a hand reading the schematic and putting it all together. This really is not a very good project to learn on. Even with 30 plus years of electronics experience the soldering in this project about got the best of me. The wires are so small and close together.

[astrozombies138]

:/ I have no friends that would know anything about this haha. I think I've somewhat figured out the schematic. does the gnd from the motors go to the 33k resistor?

[biochemtronics]

When you look at the schematic just try to imagine a wire that connects together every point marked gnd. The negative wire from the battery, pin 8 of the picaxe, one wire from each of the two motors, pin 2 of the IR receiver, and one wire from the 33K resistor are all physically and electrically hooked together. Every point marked gnd is connected to every other point marked gnd.

[astrozombies138]

I'm having trouble finding the signal diode. will this work : http://www.goldmine-elec-products.com/prodinfo.asp?number=A10085

[biochemtronics]

Yes that diode will work. I used signal diodes simply because they are very small, but larger styles will work just as well. Here is a Radio Shack link to some small diodes like I used but again - any general purpose diode will work.

Diodes

[astrozombies138]

thank you very much :D