I just googled "AT89C2051 Programmer" and came up with this:
Atmel AT89C2051
Scroll down to "Device Programmers" and there is a list of mfrs.
There also appeared to be a number of DIY hobby level projects for building your own.
Not all of these programmers are LPT based. I have a Phillips LPC (small pin count 8051 device) series programmer which is USB and works in W7.
Atmel AT89C2051
Scroll down to "Device Programmers" and there is a list of mfrs.
There also appeared to be a number of DIY hobby level projects for building your own.
Not all of these programmers are LPT based. I have a Phillips LPC (small pin count 8051 device) series programmer which is USB and works in W7.
2 decades ago I had some brief experience with some local produced (from Asia) Eprom programmers and was quite an expensive piece of equipment targeted at industry end users. IIRC, it comms with the PC through the serial com port, with its own DOS based program. I used it to revive corrupted or wrongly flashed PC bios flash roms. It worked nicely. and saved the day.
I was looking at Aliexpress China, came across quite a number of Model TL866 universal programmer, priced accordingly to number of bundled socket adapters for wide range compatibility. Some sellers provide or link to chip compatibility list and 8051 chips seemed compatible. I was thinking of acquiring one for educational purpose and to learn something new. Its USB interface.
My other alternative (after asking around) is to have the uP programmed by some 3rd party vendor who offer such services for a tiny fee and be done with that.
I was looking at Aliexpress China, came across quite a number of Model TL866 universal programmer, priced accordingly to number of bundled socket adapters for wide range compatibility. Some sellers provide or link to chip compatibility list and 8051 chips seemed compatible. I was thinking of acquiring one for educational purpose and to learn something new. Its USB interface.
My other alternative (after asking around) is to have the uP programmed by some 3rd party vendor who offer such services for a tiny fee and be done with that.
Hi all,
Anyone here built the 89C2051 based strobe light recently?
I've already built mine and also bought an affordable Atmel programmer to flash the MCU.
After that I fixed 1 led to see if it works. What I noticed was it flashed brightly for half a second, then dimmed down to acceptable brightness at 50hz. (mine is 50hz version). Is that correct?
There's one part I didn't use as specified in the DS1833 supervisor reset IC. I had selected another IC with similar specs. MCP101-475HI/TO, only difference is the pinout are reversed. just swap the other way round and its correct. I'm not sure if the new IC is contributing to this unusual issue. I had thought it would work correctly, it all light up at 50hz spot on. No problem with that.
The other 4013/4060 based pcb project all works a charm, no issues.
Anyone here built the 89C2051 based strobe light recently?
I've already built mine and also bought an affordable Atmel programmer to flash the MCU.
After that I fixed 1 led to see if it works. What I noticed was it flashed brightly for half a second, then dimmed down to acceptable brightness at 50hz. (mine is 50hz version). Is that correct?
There's one part I didn't use as specified in the DS1833 supervisor reset IC. I had selected another IC with similar specs. MCP101-475HI/TO, only difference is the pinout are reversed. just swap the other way round and its correct. I'm not sure if the new IC is contributing to this unusual issue. I had thought it would work correctly, it all light up at 50hz spot on. No problem with that.
The other 4013/4060 based pcb project all works a charm, no issues.
Attachments
This: MCU SCM 24/93 Series EEPROM Programmer Burner SP200SE/SP200S with ISP Interface 665950128473 | eBay
Software and drivers here: SP200SE- Device Programmer - 8051/52, AVR, EEPROM Programmer
Note that Pin 1 at the ZIF socket is diagonally across the lever. Its manufactured this way.
The programmer is seen in the picture above at the bottom.
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This works. The second flip-flop D-type limited the duty-cycle by the clock of the reset.
I did it.
Cheers
Could somebody help me to understand the value of the current limiting resistor r5?
I have it 56Ohm for the one yello led. Normal current of the led is 20ma. Forward Voltage is 2.1V. (Forward Current 25ma. Reverse Voltage 5V).
I check the voltage with my DWM on the led and it's only 0,55V. Why it's so? Should it be 2.1 to get the maximum light intensity?
I have it 56Ohm for the one yello led. Normal current of the led is 20ma. Forward Voltage is 2.1V. (Forward Current 25ma. Reverse Voltage 5V).
I check the voltage with my DWM on the led and it's only 0,55V. Why it's so? Should it be 2.1 to get the maximum light intensity?
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