 | | Reset on the HB
|
|
Could someone tell me where the reset button refered to in documents for the Handy Board is? I know the master reset is the on/off switch. TIA. Steve (24 years ago, 6-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | Re: 6.8 nF Capacitor
|
|
The 6.6nF was the capacitance measured for the two 6.8nF capacitors that I have managed to get (rated as 10% tolerance). The problem is that the parts listed for the HB are 2% tolerance 6.8nF capacitors which gives a lowest value of 6.6664nF which (...) (24 years ago, 6-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | Re: 6.8 nF Capacitor
|
|
(...) Yes. Capacitors have typically very loose tolerances anyhow; usually 20% unless you buy specifically selected samples in a tighter tolerance. The 6.8 is a standard value while the 6.6 you have is likely a specially selected non-standard value. (...) (24 years ago, 6-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | 6.8 nF Capacitor
|
|
Can any body tell me if a 6.6nF capacitor will do to replace the 6.8nF in the IR Transmission circuit (Fred?) ?. Thanks in advance. John Hatton (24 years ago, 6-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | HB to Comms board cable
|
|
Is there a 'best' length for the telephone cable between the HB and the Comms board. I am about to start construction and I was wondering if there was a maximum length for the cable and if a particular length was recommended. Thanks for your help. (...) (24 years ago, 6-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | Re: Connect HP 48GX
|
|
Gruezi/ Hi, (...) Instead of using the serial port, how about using the HP4**x IR port? I recall there being HP4**x programs that emulate IR remote controls which should be easy to modify (?) for general-purpose communications. Marco A. Assfalk de (...) (24 years ago, 6-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | Handyboard startup problems
|
|
Hi all, I'm having some problems with me previously functioning handyboard. I'm using a standard board which has worked fine for nearly a year. Recently it didn't get any use for awhile and the batteries ran down. After charging them for 18+ hours I (...) (24 years ago, 5-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | Re: 6.8nF Capacitor
|
|
(...) Not knowing what parts the HB uses, but assuming it is something like a polystyrene cap, then I think I have some in my component drawer. Send me your address, and I'll stick a couple in the post. Best Wishes (24 years ago, 5-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | Re: VECTOR 2X
|
|
This is my routine to use the Vector 2x with my board (see link below my name) with an I/O expansion board connected. You will need to change the I/O port #defines to work with the Handy Board I/O ports on your expansion board, but other than that (...) (24 years ago, 4-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | Re: VECTOR 2X
|
|
Hi Robert, It has been over a year since I have had the vector 2x connected to my board but if you follow the instructions that Tom Brusehaver posted in contributed software everything should work ok. You will have to connect to one of the motor (...) (24 years ago, 4-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | VECTOR 2X
|
|
Hi all, I am currently fabricating my new HBoard based robot and have only gotten to the design stages. I have ordered a Vector 2x but haven't recieved it yet. I am not particularly well endowed with electronics or assembly language skills (very (...) (24 years ago, 3-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | HB Batteries
|
|
I am going to use individual AA cell batteries to power the HB mounted into two 4 cell holders. My question is this, if I use NiMh cells (1300mAh) rather than NiCd cells (800 - 900 mAh) how would this effect the HB ?. My current understanding is (...) (24 years ago, 3-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | 6.8nF Capacitor
|
|
I have found that Maplins have only stopped stocking the 5% tolerance caps, they still do 10% versions. How critical is the capacitors value ?. I could probably try testing a batch of them in the shop using a multimeter but I couldn't guarentee how (...) (24 years ago, 3-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | 6.8nF Capacitor
|
|
I have got all the parts for building my HB except for a 6.8 nF 2% capacitor (component C6). Maplin Electronics have stop doing it and I am not sure where to try next. I am in the UK, does any body know if I can change the resistors in the infrared (...) (24 years ago, 3-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | Re: Sharp GP2D12-Sensor under sunlight?
|
|
I have three GP2D12s running on a Handyboard and they seem to run quite well in sunlight. In overcast or indirect light (shade) their performance seems identical to indoor light. In bright sunlight there seems to be a possible shortening of the (...) (24 years ago, 1-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | Sharp GP2D12-Sensor under sunlight?
|
|
Hi, I am working on a robot with the HandyBoard. I am thinking about using the Sharp GP2D12-Sensor because the other IR reflective sensors I use won't work under sunlight. I read the spec. sheet of GP2D02 and GP2D05, both of them mention that they (...) (24 years ago, 1-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | RE: Motors spinning at startup
|
|
I also tried all sorts of capacitors, etc. in an attempt at solving this problem. While the capacitors helped to minimize the length of time before the motors calmed down, there was always a short period of motor craziness that never went away. I (...) (24 years ago, 30-Jun-00, to lugnet.robotics.handyboard)
|
| |
| | Re: Motors spinning at startup
|
|
I have been having the same motors spinning on powerup "problem" with my Handyboard. I tried various capacitor combinations on my modified servo motors to no effect. Fred M. finally provided the answer: (...) In short, there is nothing wrong with (...) (24 years ago, 30-Jun-00, to lugnet.robotics.handyboard)
|
| |
| | Re: sonar and overflow
|
|
Hi I think that the longest distance your able to measure is about 2.7m. The counter is 16 bit long and has no sign. But the integer is has a sign, so you can only use 15 bits, which is 32768. The counter increases each 0.5ns (pink book). Sound (...) (24 years ago, 30-Jun-00, to lugnet.robotics.handyboard)
|
| |
| | sonar and overflow
|
|
Greetings all, Has anyone managed to work out some code which checks the overflow bit for the counter used in the polaroid sonar code? At the moment mine distance readings seem to be maxing out around 1.5m or so, and I'm not sure if it's the timer (...) (24 years ago, 30-Jun-00, to lugnet.robotics.handyboard)
|
