Mouser is backordered on the MCP1702-5002E/TO part. Any suitable alternates?
Mouser is backordered on the MCP1702-5002E/TO part. Any suitable alternates?
https://www.tme.eu/en/details/mcp1702-5002et/ldo-unregulated-voltage-regulators/microchip-technology/mcp1702-5002eto/
196 pcs as of now
Do I understand correctly that if I build an "AY-AT" kit with all the supplied cheapo parts and substitute the high-grade parts jakeisprobably listed in post #3893, minus the 20MHz crystal, that the unit should power on run properly without updating the firmware?
BK
mebel,Markus firmware and madires firmware is the same!
You, probably meant Karl-Heinz Kübbeler firmware?
Does anyone have the same problem with AY-AT? On Karl-Heinz Kübbeler software everything is ok but on Madires software there is a problem with capacitance measurement. The results are always about 4% less than it should be( I have checked that with a multimeter). Sometimes after programming the microcontroller (and callibration) it will happen that the result is very close - but it happens only once and never again.
Do all caps read low or just a specific capacitance range?
if (Mode & PULL_10MS) Value /= 109; /* -9% for large cap */
else Value /= 104; /* -4% for mid-sized cap */
Hi Guys,
I have a question on replacing the TL431 vref with the LM4040 in the mega328 kit. I'm trying to remember from somewhere in this thread
if the 4040 is pin compatible with the 431. Somethings telling me that it wasn't pin for pin.
I'm getting ready to assemble one of the kits, (have 2) but can't remember about the 4040.
Help will be appreciated,
Thanks
And some good news We proudly present 1.32m:
- Additional output of components found to TTL serial interface.
- Driver for TTL serial interface (hardware and bit-bang).
- Updated var_russian.h (thanks to indman@EEVblog).
- Added support for X&Y offsets to ST7735 driver.
- Changed configuration of battery monitoring. Added switches to disable battery monitoring and to support an unmonitored external power supply.
- Added configuration switch to reverse operation mode selection at startup (UI_AUTOHOLD).
- Improved filter for Germanium BJTs with high leakage current in detection function for depletion mode FETs.
- Added fancy pinout to PCD8544 driver. Also fixed error in the PCD8544 driver's function LCD_CharPos() for rotated output.
- Improved functions for fancy pinout of 3-pin semiconductors and moved some functions to display.c. Output of pinout on separate screen if required.
- Added indicator for usage of external voltage reference (Show Values).
- Improved IR decoder and added optional protocols.
- Added more protocols to IR RC transmitter.
And thanks to indman for the vintage Germanium BJTs.
Hmmm, in that case I installed the LM4040 into my AT-AY incorrectly. Post #4052 shows it correctly done? Likely undamaged??
BK