Let's Make Robots!

MCP73213 Dual Cell LiPo Charger Recommendations

What are some things you would like in the upcoming dual cell LiPo Charger? Right now, the charger will feature:
1 amp and 500 milliamp selectable charge rate
Charge Indicator
Charge control
USB input or Wago screw terminal/JST connector/ Header?

Anything else?

MintyProbe, the Altoid can logic probe

Inspired by Andersen and CTC, I am putting together a Logic Probe Kit consisting of:
     MintyProbe, a tiny 3.5"x2.25"x.75" Logic probe with 2x16 LCD Screen able to:
                Detect High, Low, Floating Inputs
                Signal Pulse Length
                Voltage readout (5V and Under)

MotorCityRobots.com

Myself and a local member of a hackerspace in Detroit recently started a new website devoted to robotics in Detroit. Right now the site is brand new, with really no content. So what I'm asking you to do is to sign up on the site, create a couple posts, etc just to generate some content. I'm not asking you to leave LMR, just check the site out (whats there anyways) and if you're proficient at drupal send me a PM, so you can help out the site too! Thanks.

Zekk, you make me cringe. Here's your graphic.

Here. Connect the 9V output to the Propeller/5V regulator, and the 6V output to power the servos. Use the ground on the 4aa pack for both supplies, both the servo supply and the 5V regulator.

Free Motor Controllers!

I am currently designing some very budget friendly Motor drivers, and to test the design out, I am giving away 10 free drivers! Each driver is a single or possibly dual (5 single and 5 dual) transistor based design, and cost per board is very, very low. If you would like one of these free driver boards, please post in the forum below. No restrictions! Each board ships with a application note so you know how to use it.

A few specs:

Max Voltage: 30V

Max Amperage: 0.6A

Your most lethal component in your work room

So today I recieved my huge capacitor, 10,000UF @ 450VDC, this thing is freaking huge. I mean it's like I'm overcompensating for something... Anyways, what is the most dangerous component you own? This is probably it, as it has enough power to remove limbs. Heres a picture too.

LMR series of PCB's

I think that LMR should have its own series of circuit boards, with the designs open source for all LMR'ians to use. Heres a couple ideas for PCB's:

Shawn White - Carrot Top - Raggedy Ann look alike?

Anybody notice that Shawn White (US Snowboarding olympian) looks like Carrot Top (US comedian)?

 

 2006_mSNBslope_08v.jpg

Shawn White

 

carrot-top8.jpg

Carrot Top

20Amp Motor Driver/Controller

I am looking for a 20 amp motor controller/driver. I prefer an IC, that way I can integrate my own driver circuitry, but if it is cheap (under 50) post it. I'd prefer if it could provide 20 amps per channel. It will be operating on 12VDC.

Audible click coming from Maxbotix LV EZ1

Just got my sparkfun stuff today, and while testing my Maxbotix LV EZ1, I can hear a faint clicking noise a few times a second. Also, the Analog values seem to be completely inaccurate. I think the accuracy may be with the Power supply (ATX computer psu). The clicking noise can only be heard when the sensor is pointed directly at my ear. The sample rate of this sensor is 20Hz, so I know it shouldn't be the sampling device making the noise. Any experience with this strange problem?