All: It seems that if one specifies #device = ICD, then the fuse setting for the power up timer (PUT) is not honoured by CCS. It does this silently except for...
Reminder from the Calendar of ORE_bits http://groups.yahoo.com/group/ORE_bits/cal Monthly meeting Monday May 8, 2006 7:00 pm - 10:00 pm (This event does not...
ORE_bits@yahoogroups....
May 7, 2006 10:58 pm
6743
Great meeting guys. Nice to see all the mini-sumo action and some new members. Aaron, you've finally got some competition for your mini-sumo bots :) Cheers, ...
Firstly, it was great fun at the meeting! Glad Aaron took the extra effort to ensure the mini sumos and the ring were there! I'll try and have some videos...
Hi Guys; I've started a blog at http://robot-tics.blogspot.com to provide a place to debate the future of robotics. I've put up the first couple of posts and...
Here's some of the action from the Mini Sumo battles that took place May 08. meteor.rchomepage.com/sumo_edit.wmv Although I didn't include them, I did lose a...
Hey! What's the idea of beating up my poor black minisumo when the batteries were dead and it was in line following mode? <grin> My miniore sumo is underweight...
Do MOSFETs require a driver IC to get the proper gate voltage? I'm looking to make a constant-current discharger, and I'm wondering how to interface the...
It depends on the MOSFET. Most take more than 5V on the gate to be fully turned on, but for others 5V is enough and can be connected directed to the PIC. The ...
... You can look for "logic level MOSFETs" which work well with digital outputs without requiring any extra drive circuitry. Troll through the digikey catalog...
Ian Gough
igough57@...
May 13, 2006 12:53 pm
6752
Is there an assembly guide for the miniore board? I started assembling mine and some parts are not solscreened on the board the first one that comes to mind is...
Hi! I have both IRF540N and IRF1010N FETs. Are eitther of these "logic level"? If not, what parameter is relevant when looking at a FET spec sheet? Thanks....
on the polarized caps the drawings mark the positive are the caps marked the same or is it the neg thats marked Jon -- 109 Mardan Dr Grants Pass,OR 97527 541...
Hi Jon, The miniore design uses an older layout library from before I added silkscreen markings for the positive side of the polarized caps. The PDF of the...
In the Digikey catalog (dunno about others) the International Rectifier MOSFETs are listed by type and package and the logic level devices are listed for...
Ian Gough
igough57@...
May 15, 2006 12:22 pm
6758
... I downloaded the pdf and see the + markings but is the *capacitor* marked negative or positive are they the same as discrete components that have the...
thats for discrete I want to know if surface mount is marked on the negative or positive Jon ... -- 109 Mardan Dr Grants Pass,OR 97527 541 474 7782 Wherever...
Ah, my apologies..... in that case... http://rocky.digikey.com/WebLib/Nichicon/Web%20Data/WX%20Series%20Alum%20Elec%20Chip%20Cap.pdf it would appear the marked...
... Discrete electrolytic capacitors have their negative lead marked, but tantalum caps can have their positive lead marked. I don't know if that practice is...
... well it was one of those "doh" moments just look up the datasheet dummy in this case it was the positive marked so all caps are now installed the next big...
Looking at the schematic, it looks like the MINIORE board will work with a 16F876A (I happen to have one!) as well, with a few caveats... - an external...
Spamming my own thread here, but it occurred to me that it should be easy to port all of the MkIII Mini Sumo code samples to a 16F876-based MINIORE. I'll...
... That would be cool. I hadn't considered that before. ... This could be possible. Some of the general I/O pins from the header on the lower right could be...
... The power led is just to the right of the PWR silkscreen, just above R1. The anode side (positive) is on the PWR silkscreen side. The user LED is just...
What line sensor devices are used on the Miniore? There are three lines on the PCB for each, which is a bit confusing, as most are 4-wire devices (IR...
... The grounds can be combined on the emitter and receiver. Saves a bit of space on the layout. <grin> I use both QRB1114 and QRD1114 devices, but pertty much...
Duh! :) Makes sense now... I have wondered why they "waste" an A/D channel on what is basically a binary input. Could you not adjust the gain to ignnore the...
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