betwixt
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Yesterday, 14:01betwixt replied to a thread Trying to repair a Bosch JS470E jigsaw - component ID? in Service Manuals, Requests, Repair TipsLooks like a 4.7mH inductor but why it is mounted on a second board is a mystery unless it is to sense the magnetic field from the motor. When it is...3 replies | 76 view(s)
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Yesterday, 13:56betwixt replied to a thread [moved] How to design a crystall oscilator circuit using CMOS 40106 DESIGN in Hobby Circuits and Small Projects ProblemsThe capacitor values come from the crystal manufacturers data sheet, if you use 33pF or 39pF it should work fine, the values are not particularly...7 replies | 151 view(s)
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22nd April 2019, 15:38betwixt replied to a thread First 555 timer circuit, bunch of questions using a relay in Hobby Circuits and Small Projects ProblemsIn a way you are right but the risk is that your connection isn't to ground first then the trigger pin second. If you touch trigger first you...12 replies | 1094 view(s)
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22nd April 2019, 13:19The symptoms still suggest the problem is due to signal strength. If the USB link was faulty you would not see the correct characters at all. It...13 replies | 775 view(s)
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22nd April 2019, 09:15betwixt replied to a thread First 555 timer circuit, bunch of questions using a relay in Hobby Circuits and Small Projects ProblemsBear in mind that floating inputs also present a risk of damage. In simple terms, that static charge you used to trigger the timer could be big...12 replies | 1094 view(s)
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21st April 2019, 21:35betwixt replied to a thread First 555 timer circuit, bunch of questions using a relay in Hobby Circuits and Small Projects ProblemsCapacitive touch sensors work on a different principle and would be very difficult to implement with simple 555 timers. What you saw was the trigger...12 replies | 1094 view(s)
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21st April 2019, 21:16betwixt replied to a thread Ethernet(ENC28J60) Interfaced Arduino - DHCP Failed in Elementary Electronic QuestionsI can't see why the CPU should be overloaded and I suspect it is a limitation of Proteus. I do not use Windows so I cannot use Proteus to check...4 replies | 247 view(s)
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21st April 2019, 16:18betwixt replied to a thread Ethernet(ENC28J60) Interfaced Arduino - DHCP Failed in Elementary Electronic QuestionsSimulations are often wrong! Did you change the line:as advised in the program? also check your MAC isn't blacklisted by your router. Brian.4 replies | 247 view(s)
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21st April 2019, 12:28See if XON/XOFF protocol is supported. It drops special commands for 'stop' and 'start' into the data stream itself so you don't have to rely on...13 replies | 1286 view(s)
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21st April 2019, 12:25Those messages are telling about the connection state to the network. They are saying it is intermittently able to connect, which implies a weak or...13 replies | 775 view(s)
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21st April 2019, 10:31betwixt replied to a thread First 555 timer circuit, bunch of questions using a relay in Hobby Circuits and Small Projects ProblemsI seriously do NOT recommend leaving the trigger pin floating. It worked when you touched it because your body held enough static charge that it...12 replies | 1094 view(s)
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21st April 2019, 08:43betwixt replied to a thread First 555 timer circuit, bunch of questions using a relay in Hobby Circuits and Small Projects Problems1. The circuit will probably drain your car battery in about 1 year if you don't recharge it. So don't worry about current consumption, the relay is...12 replies | 1094 view(s)
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20th April 2019, 11:47What GSM module? What TTL to USB converter? The message suggests you have a poor GSM signal, the different messages say it is having trouble...13 replies | 775 view(s)
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20th April 2019, 08:07Even 2400 Bauds (= symbol rate rather than bit rate) might be difficult to achieve over a normal phone line. The reason is simple, there are only two...13 replies | 1286 view(s)
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19th April 2019, 11:31I'm no expert in Atmega devices but the schematic suggests it generates the negative voltage needed for serial communication comes from a charge pump...16 replies | 645 view(s)
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18th April 2019, 19:34.... or more accurately DecTemp = (float)AdcValue * 0.0001; It shouldn't have crashed though. Maybe something that has been fixed since MPLABX...6 replies | 682 view(s)
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18th April 2019, 14:41The compiler should never produce duplicate addresses in its hex file. It would imply the linker had failed and at the very least should abort with...14 replies | 844 view(s)
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18th April 2019, 14:32betwixt replied to a thread Fuse replacement 110V 5A to replace 220V 5A ? in Service Manuals, Requests, Repair TipsBungees aside - when a fuse breaks it is because the current through it exceeded its rating. The current causes heating in the fuse wire regardless...5 replies | 463 view(s)
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18th April 2019, 11:40betwixt replied to a thread How to read incremental rotary (quadrature) encoder? in MicrocontrollersI agree with Klaus, you would need significant extra electronics to externally multiplex SW with the encoder output and for such a low priority...7 replies | 244 view(s)
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18th April 2019, 08:51betwixt replied to a thread How to read incremental rotary (quadrature) encoder? in MicrocontrollersYou only need two signals. A and B. 1. Use one of them (lets call it A) to trigger an edge INT interrupt. 2. In the ISR, read 'B', it tells you...7 replies | 244 view(s)
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17th April 2019, 21:19The hex file has nothing to do with it so the compiler you use is irrelevant. It means something is degrading the electrical interface between the...14 replies | 844 view(s)
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16th April 2019, 10:58Your code is still not closing the ISR properly - you have main() inside the ISR at the moment! GIE is AUTOMATICALLY reset during an ISR so none...53 replies | 6935 view(s)
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16th April 2019, 10:03betwixt replied to a thread 4 bit lcd display(PC066PGL) not working with PIC16F877A micro controller in MicrocontrollersThe electronics around the contrast setting is obviously working properly so it comes down to a software error. It does seem to be at least...20 replies | 643 view(s)
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16th April 2019, 09:56You missed the closing ')' in the ISR as well. RCIE should not be reset, remember that GIE is cleared during an ISR so it would have no effect...53 replies | 6935 view(s)
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15th April 2019, 23:21... the point I was making is there is no need to double buffer or have a function to clear the buffer at all. What you do is maintain a pointer...53 replies | 6935 view(s)
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15th April 2019, 16:06betwixt replied to a thread [PIC] Running program/code for pwm dimming and usart pic18f87j10 in MicrocontrollersAll you need to do is follow the formulas for setting the TMR2 rate for ~1KHz and setting the PWM value in the other registers between 0 and 255. ...6 replies | 255 view(s)
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15th April 2019, 11:46betwixt replied to a thread 4 bit lcd display(PC066PGL) not working with PIC16F877A micro controller in MicrocontrollersI think we all know what an LCD module looks like. I meant a picture of the characters on the display when the program isn't working and what you...20 replies | 643 view(s)
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15th April 2019, 11:39This isn't a length issue, there is a fundamental problem with sending and receiving strings. As far as I can tell, you do not need the...53 replies | 6935 view(s)
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15th April 2019, 11:29betwixt replied to a thread [PIC] Running program/code for pwm dimming and usart pic18f87j10 in MicrocontrollersWe need to know a lot more about what your requirements are. What method of PWM dimming, what the power source and load are, what serial speed and...6 replies | 255 view(s)
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15th April 2019, 09:02betwixt replied to a thread Car amplifier at home (diy) in Hobby Circuits and Small Projects ProblemsI can't help with recommendations but I'm sure glad I'm not you neighbor! What is a "adc convert 3000 watts" and asking what is available in your...2 replies | 247 view(s)
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PLEASE - no friends requests or private emails, I simply don't have time to reply to them all.
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