MiniPower Stick 2.0 - Mini
Contents
1. Status LED current current Resistance in amps in amps 15 vdc 0 0900 5 5 vdc 0 020 275 86 15 vde 01100 5 5 vdc 0 025 220 85 ee a no is we tozo s5 ve 0050 110 78 dim yes 15 vde 0 2950 5 5 vde 0 060 92 75 ves is vae 0 3400 ss vic 0 070 vs 75 ve 15 vde 0 3900 5 5 vde 0 080 69 75 yes 15 vdc 0 5900 5 5 vdc 0 120 46 75 yes NOTE Readings were taken at 40 RH and at 23 2C with a fresh 1 5vdc AAA Kirkland Battery Input current will go up as the input voltage drops off Output current should not exceed 150ma as this may result in damage to the unit You probably won t want to go above 100ma as this will discharge your AA battery in short order Basic Description 1 Power your 5vdc projects with a 1 5vdc AA Alkaline or NiMH battery 2 High efficiency 100 180mins of run time from the MP Stick 2 0 from a single AA to your project much longer if efficiency kept at amounts greater than 90 3 Slick design Fashionable because it s a tiny only slightly bigger than AA battery power source for your entire 5vdc project needs those projects requiring less than 100ma of current 4 Uses only one AA alkaline battery or NI MH rechargeable battery Could also be used for charging a mobile phone with a Mini USB port with the supplied Mini USB cable in those emergency situations 5 Safe to use Unit has over voltage protection to protect the2. above chart it shows the efficiency and the input output currents that can be expected For a more complete chart please refer to Reference Material section at the end of this user guide NOTE We did do the crazy thing for you that we all know you want to do with your MP Stick 2 0 We connected an MP Stick 2 0 to a BoeBot Tank robot with a resulting current drain of 385 milliamps on the output We sort of cheated as we substituted an MP350 no longer available for the LDO Linear Regulator they use on the board of education and rewired the servos so they fed directly off the MP Stick 2 0 s output IT RAN Well it did manage to run it for a few minutes before the battery went completely flat The estimated battery current was at 2 5 amps You can watch the video on this CD or check it out on our webpage at www dinam tech com Tank_demo and see for yourself a boebot tank running off one AA battery Well that s about it except that you might be wondering How do you turn off the Mini Power Stick 2 0 It s easy All you have to do is unplug the power cable from the power jack on the clear plastic cover It couldn t be simpler The unit goes to sleep and current drain on the battery while not being used is negligible We recommend if you plan on storing it for an extended period of time that you remove the battery to prevent battery leakage and damage to the unit REFERENCE SECTION Voltage in Input voltage out Output Circuit Efficiency
3. and they would probably get mad at us if we forgot to mention their names SchmartBoard Power Modules and boards are really cool and you should try these out sometime in the future but once again they are also the trademark of their owners in this case SchmartBoard Inc Everything in this User Guide is copyrighted by Dinam Technologies and all rights are reserved However if you want to use something in this User s Guide in your documentation unless it s copyrighted by one of those other companies mentioned earlier for an article that you want to write on the web or in a magazine then feel free to do so as long as you give credit to Dave Lawson and the crew at Dinam Technologies Oh yeah we almost forgot We reserve the right to make changes to the design what is offered in the package and the specifications without notice That should make obvious sense to most people as we would like to make improvements from time to time However our lawyer is afraid that there is that one person out there that just doesn t like change and probably has a lawyer that needs to pay off his gambling debts and is willing to sue anyone that has more money than he does If you re that person then we re sorry However you have been notified Our lawyer was on vacation when we wrote this legal disclaimer so that s why you can actually understand it He ll probably make us change it when he gets back but until then this is all we have to say on the s
4. Introducing the Mini Power Stick 2 0 A 1 5vdc to 5 5vdc power supply for your hobbyist needs The Mini Power Stick 2 0 is capable of producing up to 100 milliamps of power at 5 5 vdc This is more than enough to power most PIC Basic Stamp PICAXE or Arduino projects Never before has it been so easy to add switch mode DC DC technology to your project The unit is capable of supplying more than 100milliamps of power but we recommend staying below this level o o there was the 7805 and all was well in In the begin nng the hobbyist world Then people started wondering Can we power our devices and projects to last longer with a cheaper power source than a 9 volt transistor battery From that simple question came the Dinam Technologies Mini Power MP Stick 2 0 a miniature switch mode power solution within reach of the electronic hobbyist and experimenter Our Mission To become the leader in low voltage DC to DC power supplies for the small volume and hobby market We are dedicated to the innovator and his creations In other words We are here for the purpose of bringing power to your ideas So how does this little marvel of electronic engineering work We take a 1 5 volt AA battery we connect it to a fast switching circuit that charges a coil and that produces a step up voltage that results in a 5 5 volt output That the basics Obviously there is a little more involved than that but all you really ne
5. ally if we determine at some future point in time that there is a common issue among customers with this product so please send an email before sending it in to determine if you need to do so Thanks in advance for your cooperation in this matter Warranty Disclaimer Caveat emptor not really This should be obvious to most but we have to state it anyway If you drive over this with a car or you figure out a way to connect it to an outlet in your home Which we definitely don t recommend or you try to use it as a defibrillator on your wife s favorite cat that you accidently fried with that really cool project idea that you had then we ll probably not replace it for you We put a lot of work into bringing you a great product that should give you many years of service so it should be treated with respect In other words if you abuse it then we don t feel that we should have to fix it for you Fair is fair Although this unit was designed to power electronic devices and such we don t guarantee that it will power your electronic device nor do we guarantee that it will be suitable for any situation or purpose that you dream up Let s face it the way some home brewed electronic projects are designed a car battery would have a hard time supplying enough power Even though it has protective circuitry to prevent catastrophic failure of the device your project or your phone if you elect to charge your phone with this device we don t
6. circuitry of the unit and your project or your mobile phone if you are using the included Mini USB adaptor cable Specifications Maximum Output Current Output Voltage Typical Efficiency Converter frequency range Applications Power source Device compatibility Concurrent operation NET Weight of Unit Package Includes 150mA 100mA max continuous recommended 5 7V4 5 5 42V to 5 99V 92 99 Range of operation for best battery performance 73 99 Full recommended range of operation 1400Hz to 156KHz 1 to 100 milliamps 5 7vdc PIC BASIC Stamp PICAXE or Ardiuno projects Mobile phone digital camera PDA MP3 MP4 etc as a standby charger or power backup unit 1 X AA Battery All devices using a 2 5mm x 9mm DC jack or Mini Micro USB port with a power requirement lt 100ma 5 7vdc 5 0 5 7vdc should be able to use the MP Stick 2 0 within the range of most microcontrollers If you use this as a charger you can use your mobile phone mpMp4 player while charging Ultimate convenience with no interruptions to Service 20g e X Mini Power Stick 2 0 e 3 X connection cable 3 DC Barrel connectors 1 is a 2 5mm x9mm with screw connectors cables 1 Mini USB cable e x Micro USB adaptor e x female 2 5mm x9mm connector with screw connectors e X User Guide CD Disk and CD Case NOTE e Requires 1 AA Alkaline or NI MH Nickel Metal Hydride battery e Battery not included Warra
7. cture you see an oscilloscope reading of the 5 5 volt DC voltage It looks fairly clean without any defects NOTE The ground level was moved to the bottom of the display Now let s look at the DC noise by switching the scope to AC input and to the 50 millivolt scale As you can see the noise is now visible is an AC saw tooth signal an is approximately 50 millivolts riding on top of the 5 5 volt DC output That represents a noise component of only 0 9 Not bad However the noise AC saw tooth ripple level and frequency does change as the current changes in this example it was 100 kHz with respect to the load changes You can eliminate the noise with filtering and by using a low dropout regulator on the input to your project A SchmartBoard Power Module will work nicely for this and can costs less than 10 00 However the SchmartBoard Power Module does draw 6 5milliamps of power from the MP Stick 2 0 to power the LED on the module Fortunately most PIC PICA XE Basic Stamp Arduino projects won t require much if any filtering except in the most noise sensitive applications We also mentioned that using the MP Stick 2 0 with audio projects shouldn t matter in most cases This is because the frequency is so high that no normal person could possibly hear the noise that is generated If you know someone that can hear this high a frequency it s time to start looking for some silver bullets or a wooden stake There is a possibility o
8. ed to know to make this work in your device is to stay within the limits What are the limits 1 The input limit is 1 5 vdc This shouldn t be a problem because the device is only large enough for 1 AA battery We re sure someone will figure a way around this but please don t 2 The recommended output current limit is 100 milliamps Even if you could get more than that out of the device you would probably need to buy stock in a battery company or use rechargeable batteries because the resulting current demand on the battery will start to approach amp and will completely discharge your battery in short order 3 Obviously this device is not intended for underwater projects and is not covered under the manufacturer s warranty for such defects Even though it does have a sleek cylindrical body it s not a submarine so don t treat it like one 4 That s about it As customers come up with creative ways to stretch the limits of this device we ll undoubtedly have to list more things you shouldn t do with your MP Stick 2 0 Until then just keep the previously mentioned limits in mind when using the Mini Power Stick 2 0 Here is a basic diagram of the Mini Power Stick 2 0 i gt 1 5vdc AA Converter DC DC OutPut Voltage 5 5vdc The circuit can determine how much power is required by monitoring the output voltage and current levels It will respond by demanding more current from the input as its voltage level starts to go down
9. f low frequency harmonics being generated from the high frequency noise on the DC output from the MP Stick 2 0 so some experimentation would be needed to see if this would be an issue with your project However in most cases adding a Low dropout linear regulator like the 78L05 or any of the SchmartBoard Power Modules except the 9vdc version will eliminate the offending 50millivolt ripple and give you a clean regulated 5vdc output Here we see a Mini Power Stick 2 0 being used with a Basic Stamp blinking LED project Here we have a Mini Power Stick 2 0 connected to a Schmitt Board Power Module Notice that the LED on the MP Stick 2 0 is on with the Basic Stamp experimenter s board and not with the SchmartBoard Why is this The SchmartBoard is only drawing 6 5 milliamps 0065 amps from the MP Stick 2 0 and the Basic Stamp Experimenter s board is running a blinking LED program and is drawing 40 milliamps The LED on the MP Stick 2 0 indicates a lower switching efficiency With the 6 5 milliamp load the efficiency of the unit is around 97 However at 40 milliamp loads the efficiency drops to around 81 As long as the LED on the MP Stick 2 0 is not on unless you overloaded the unit then you are enjoying the most efficient use of the Mini Power Stick 2 0 and the best possible battery life from the AA battery Voltage in Input voltage out Output Circuit Efficiency Status LED current current Resistance in amps in amps In the
10. guarantee that this feature it will work every time For example if you do something not wise like shorting the output for an extended period of time it probably will fail If you elect to modify the unit in any way we will elect not to repair it You can of course modify it if you wish but don t expect us to repair something that you changed and now fails to work as a result We suggest that you wait until the warranty has expired and then modify the unit if you wish If it fails to function after your modifications then you can send it to us to fix for a fee not free That way you will have at least received 90 days of service out of the device before it was rendered inoperable At this time we don t have extra circuit boards to sell if a customer caused malady should result We ll probably have some in the near future because you can never tell how many people will need to be rescued from themselves LEGAL STUFF Our Moto Ut imperdiet odio et The silly things that lawyers make us say so we won t get sued Even though the Mini Power Stick 2 0 is a product of Dinam Technologies we do have to state that the basic unit and all components are made in China and assembled modified and tested in the USA We also have to pay our respects to the people at Revolution Education Ltd Parallax The Arduino Foundation and MicroChip because the names PICAXE BASIC Stamp Arduino and PIC are the trademarks of these companies
11. nty Our warranty is not like a lot of the warranties that software companies and some hardware companies for that matter give you We don t charge you an arm and a leg for something that sort of works then tell you that if anything goes wrong it s your fault Our warranty is simple 1 Ifthe unit does not function when you receive it Or 2 Ifthe unit quits functioning after you ve owned it for less than 90 days Or 3 Ifyou don t like the color okay maybe that s a stretch forget that one We will repair or replace at our option the unit as long as it s returned to us at one of the addresses listed below within 90 days from date of purchase You will need to pay the shipping to us but we ll pay the shipping back to the address from where it was sent Where to send it Pick the address that is closest to you West Coast Midwest East Coast Dinam Technologies Dinam Technologies Dinam Technologies Attn RMA Department Attn RMA Department Attn Warranty Department 1680 Hidden Valley Rd 1680 Hidden Valley Rd 3327 Back Creek Church Road Sandy Utah 84092 Sandy Utah 84092 Charlotte NC 28213 Please send us an email at sales dinam tech com before sending the defective unit to receive an RMA number that you will need to place on the box when you send the unit This helps us to keep things in the proper order and not lose your product In some cases we may elect to just send you a new replacement circuit board especi
12. to maintain constant power The unit will continue to supply current at a level of 5 5vdc on the output until the battery is completely exhausted or the output current limits are exceeded How does it work on the inside BAT1 bi S wee i i ini NAANNA Control circuit For the purpose of this explanation Qland its sensing feedback circuit is not shown When C2 1s discharged then Q2 is off This causes the current to flow throw D1 until the capacitor is charged Once charged a sensing circuit tells Q2 to turn on This stops the flow of power from L1 to C2 The current now flows through Q2 to ground for a very short period of time at max current fully saturating the coil C2 cannot discharge through Q2 because of D1 so all its voltage and current is available for the load your project When the load on the MP Stick 2 0 discharges C2 a little then the sensing circuit will turn Q2 off When this happens the field in the coil collapses and higher voltage current flows through D1 to C2 and charges it to 5 5 vdc After that the cycle begins again So you might be thinking Doesn t the oscillator produce DC with a noise on the output Well um uh The short answer is yes As with all things there is usually a trade off However for most projects that aren t audio or RF based it shouldn t be a problem For some projects that are audio or RF based it shouldn t be a big deal either This is why In the first pi
13. ubject of Legal Stuff Note The phrase Ut imperdiet odio et is Latin for We hate lawyers too It was translated using Google Translator a product of Google Inc as none of us here speak Latin So if you know Latin and know that this phrase is not a correct translation then send us an email at sales dinam tech com and we ll fix it Also there might be something in it for you a very small something for helping us out Thank you for reading all this and we do appreciate it However shouldn t you be playing with your MiniPower Stick 2 0 After all that is why we built it and why you bought it The team at Dinam Technologies
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