Things are on their way to be sorted out but I'm still waiting for the replacement shipment to arrive so perhaps you could refrain from jumping to conclusions and give advice I have not asked for or find useful in any way:by Dala.horse - General
Now that Roy and I are on the same side we have found DHL Express internal communication is really bad or nonexistent. No wonder things get confused! Standard answer from DHL Sweden so far: Things take a little longer presently but we will get back to you with an answer in a short while. Big surprise! They newer answer at all!by Dala.horse - General
Well Roy, I appreciate the quick response. Perhaps checking and acting upon emails when issues are new can save both you and your customers a lot of energy. Will contact you by email and give feedback here later to hopefully tell a story with a happy ending.by Dala.horse - General
QuoteSteambuff Hi, Did you pay by Credit Card (or PayPal)? If so get them involved and claim for non-delivery and ask for the transaction to be reversed. Dave No luck I'm afraid, the "PayPal complaint center" just gave the message that this type of transaction is not covered. So be aware that you have to rely on the seller to fix any shipping problems using direct payment trough PayPal. (Andby Dala.horse - General
I used PayPal via a direct request for payment from Panucatt. I'll check what they have to say. Thanks for the suggestion!by Dala.horse - General
A word of warning for the combination of buying from Panucatt Devices and having DHL Express do the shipping. I bought controller hardware that DHL Express lost in shipping and they insist that only Panucatt Devices can make a formal complaint. I tried everything and now only a small claims court can settle the issue here in Sweden. Panucatt Devices has never answered polite mails or told DHLby Dala.horse - General
"But to say that Ohms law does not apply or that there is a region that is "outside" of ohms law - anybody with an elementary course in electronics can not say that." Noobman said. Yes I can say that and I will also repeat it! It's not Ohm's law that primarily limits the current in the controllers we use in printers. It's not any of all the other "laws" used on simple DC circuits that primarilyby Dala.horse - Stepper Motors, Servo Motors, DC Motors
I totally agree that stiffness and stepper accuracy has low priority for most builders. My first printer is not finished yet but I have spent many years im developing test equipment with lots of moving parts including stepper motors. Hard data on accuracy are hard to find, probably because the truth doesn't look too good in data sheets. This is actual test data: http://www.euclidres.com/apps/steby Dala.horse - Mechanics
Ohhh... you are really quick to respond. Much appreciated!!!by Dala.horse - Repetier
Surely your circuit has some connections to the other control pins or...? http://www.farnell.com/datasheets/1696835.pdf gives the details for the rest of the connections. Active high/low inputs, pullup resistors and such things matter.by Dala.horse - Controllers
I just tested v.091 and the new configuration tool and compared it with the manually edited setup for v0.83. The thermocouple sensors only give half the value of the old (and working) setup. Both extruder and heatbed show values that change but are half of the expected ones. The setup: Azteeg X3 AD 8495 sensors analog pins 4 and 11 As a beginner in 3D printing (but with many years in electronicby Dala.horse - Repetier
Yesterday I got the combination Azteeg X3, Repetier 0.83 fw, Repetier Host 0.95c and K-type thermocouples to work. change EXT0_TEMPSENSOR_TYPE from 1 to 60 and HEATED_BED_SENSOR_TYPE from 1 to 60 in configuration.h change #define TEMP_0_PIN from 13 to 4 and #define TEMP_1_PIN from 14 to 11 in pins.h (for the appropriate motherboard type, 34 in my case) In the Repetier firmware file "Eby Dala.horse - Firmware - experimental, borrowed, and future
Ohms law never plays a direct role in deciding the current through the motor. The chopper circuits always limits the current to the set level. The drivers in printers are mixed analogue/digital/mechanical control systems with feedback. Ohms law is never used to describe such systems.by Dala.horse - Stepper Motors, Servo Motors, DC Motors
At high and constant speed and if you disregard the constant current chopper drive it might look like a sinus curve. In all other cases such as slow speed and/or with frequent starts and stops the current will always show the telltale signs of the chopper working. Nothing sinusoidal in this document for instance: http://www.ti.com/lit/an/snva029b/snva029b.pdf Anything less than top speed will haby Dala.horse - Stepper Motors, Servo Motors, DC Motors
Tonight all I get is a german version of their (Corsairs) page for CX430, you can surely find a better version. In swedish currency I payed 60 USD for it but we are fortunate to have 25% VAT so most countries should have a lower price.by Dala.horse - RAMPS Electronics
The new PC power supplies that are "Haswell" compatible completely removes all the question marks that plagued older ATX power supplies. For instance the Corsair CX430 is capable of supplying a very small 12V load only. The internal architecture makes the old demand of minimum loads on all voltages obsolete. Snipped from the data sheet: +12 V max 28 A, +5 V max 20 A, total load max 430 W. A fanby Dala.horse - RAMPS Electronics
How many years does a patent "last" before it expires? Tried to get information here: http://www.uspto.gov/inventors/patents.jsp At the most 17 years or possibly 14 years, can't tell since I'm not familiar with US patents. Just wait with arms crossed until the expiration day for each patent and then continue as before?by Dala.horse - General