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In Section 7.2 isn't like this that they mean that you can mix with the contrast: http://forums.parallax.com/attachment.php?attachmentid=51768&d=1201638099 <-- picture of a schedule with adjustable contrast. The currents can be a problem, but later on. I actually haven't even attached my LCD to...

Thanks for the welcome and the reply :) VLCD is tied to VSS, from page 28 in the datasheet: VLCD = VDD-2,5 to VDD - 6,0 V. Since my VDD is 3.3 V, i thought that VLCD could be 0 (VDD-3,3V). Do you think that is a good choice? I do transmit bitstreams with Device-ID all the time now :) Best...

Hi there guys, I've recently come across a PCF8655 LCD driver IC that I am trying to control my LCD with. It is not a cascaded application and the PCB-setup is a direct copy of Figure 4 on pg. 7 in the datasheet provided ( http://www.nxp.com/documents/data_sheet/PCF8566.pdf ) VDD: 3.3V VLCD: 0V...

Thank you guys for all your answers.

I've tried so far with a MC34063 but it is limited to 40 V maximum output, are you guys suggesting I would use two of those in series? Thanks so far! mr_embedded

It would be easy if I knew what I was looking for, but its a freakin jungle out there, so many products. Guidance is always appretiated. Thanks!

Hi there, I am currently working with a system that we are going to make portable for the first time. Hence, are we in need of a battery and a battery charging system. Can you give advise on an IC for charging, a battery and charger? Requirements: Lithium Ion battery (4.2 V), about 1500 mAh or...

At 80 V maximum current will be 25 mA (continuous).

I am still struggeling with the same problem. Main problem is to get 80 V out of 5 V. Can someone help me find a schedule with a typical application? Grateful for your help, MrEmbedded

Hi, this is probably a simple question but i need a supply voltage of 70+ V. The "start voltage" is a battery with 9V. I am currently using MC34063 from ST electronics (dc-dc step-up converter). This circuit delivers 38V output. How can i step up the voltage further? Can I invert the 38+ (to...

First of all! Thank you guys for your help. DPolak: The current will be measured on the "output"-side I will try to post a schematic next week for further details. Cheers!

Hi all! I currently work with electrical muscle stimulation and need some advice on electrical safety and indications. I will be working with opto-couplers with an output of maximum 40 mA, I therefore need an electrical component that indicates if the current is higher than the maximum allowed...

Gunnar Englund, We are still in an early phase of the product development so there is no specification. I did left the range open and totally unspecified to get answers like the one you gave about a coil and Neodym. Thanks a lot. Just bomb me with suggestions, all solutions are welcome. Let me...

I'm sorry if my explanation arises confusion. However am I not interested in a specific change, the product's use is only going to be used to detect a change in intensity. So if it doesn't matter if it's controllable in the range of 0-15 W or 0-15 nW. But, I dont want it to be a fixed intensity...

Hi, Im currently involved in a product development. The product is comprised of several vibration nodes. Each node shall be controlled with respect to frequency and intensity. The requirements are: --------------------------- Frequency range: 5-400 Hz (might be modified to ~100-250 Hz)...