0 Members and 16 Guests are viewing this topic.
What "ERROR!" means during adjustment in 1.43m ?Closed/open calibration are OK, then it displays reference/comparator voltage, and ERROR.
Limits:- probe resistance < 1.50 Ohms for two probes in series- probe capacitance < 100 pF- IO pin's internal resistance in low mode (RiL) < 25 Ohms- IO pin's internal resistance in high mode (RiH) < 29 Ohms
Measured capacitors are 1.5..2 times bigger than nominal value (1.13K firmware measures much closer to nominal).Also it frequently can't reliably detect component on 1-3 terminals, instead uses 1-2, 1.13k detects better.M328P @8M, powered from LiPo with XC6206.Vref LM431, divider resistors 10K/3K 1%, but instead of 3.2..3.3V it displays 3.53..3.56V - IMHO too big difference...
The transistortester is designed to run at 5 V, not 3.3
QuoteThe transistortester is designed to run at 5 V, not 3.3is this hardware or software limitation ?3.3V at 8MHz must work reliably...
3G1K08
Anyone has a misaligned/titlted screen? Bought this TC1 variant from Amazon.it vendor "diymore®"Took some photos and to me it seems to be the LCD itself that has been wrongly attached on its own board and not a soldering problem. Should I try to adjust it by resoldering? It's not really a problem but more an annoyanceAnd another question, since I wasn't able to find anything using the search option, isn't the power management (U5) usually a STC 15 series chip? Or am I looking at the wrong chip?Nothing comes up looking up what is written on it3G1K08A7728822044_XA (year/week code?)
Anyone has a misaligned/titlted screen? Bought this TC1 variant from Amazon.it vendor "diymore®"Took some photos and to me it seems to be the LCD itself that has been wrongly attached on its own board and not a soldering problem. Should I try to adjust it by resoldering? It's not really a problem but more an annoyance
And another question, since I wasn't able to find anything using the search option, isn't the power management (U5) usually a STC 15 series chip?
the power supply from the Li-Ion battery, is easily solved with a module from a power bank
3.3V will also effect the measurement ranges, i.e. lower maximum resistance and worse lower limit for inductance.
Quote3.3V will also effect the measurement ranges, i.e. lower maximum resistance and worse lower limit for inductance.You calibrate pins resistance/capacitance anyway, so what the difficulty to work from stable 3V, even with higher pins resistance ?