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![Light
Watcher
www.euclock.org
PicturebyPetteri,fromGroningen,Summer2007
Master’sstudydonebyVincent
Rousseau
https://www.dropbox.com/s/3plkkhwrvwxhwf
z/MastersThesis%20-%20Rousseau%3B200
9%3BLightWatcher.pdf?dl=0
Howmuch light do youget?: estimating daily lightexposu
re using smartphones
Cited by 13 [PDF] chronobiology.ch
Estimation of human circadian phase via amulti-channel
ambulatory monitoring system and amultipleregression
model
Cited by 27 All 11 versions[PDF] researchgate.net
An improved method for estimating human circadian pha
se derived from multichannel ambulatorymonitoring and
artificial neural networks
Cited by 25](https://image.slidesharecdn.com/lighttreatmentglassesconcepts-190928233830/85/Light-Treatment-Glasses-48-320.jpg)
![Light Sensing
Auxiliarysensors
UV(A/B)
UVSensingforoutdoordetectionanderythremaquantification?
Does UV play a rolein myopia? D-vitamin synthesis from sunlight? Action
Figure 7. Approximate depth for penetration of optical radiation in fair Caucasian skin.
Action spectra for erythema in human skin according to CIE [162] and
Anders et al [166], for SCC in mouse skin according SCUP [172] and for
CMM in fish according Setlow et al [176].
The solar spectrum from extreme UV to far infrared. The illustration shows the spectrum of solar radiation from 10 to 100 000 nm (dark blue), its variability between solar
maximum and solar minimum (green) and the relative transparency of Earth’s atmosphere at sea level (light blue). The red dashed line is a blackbody fit to the solar spectrum.
At wavelengths shorter than about 300 nm, there is a relatively large variation in the Sun’s extreme UV and x-ray output (greater than 1%), but the Earth’s atmosphere is nearly
opaque at those wavelengths (courtesy Judith Lean).](https://image.slidesharecdn.com/lighttreatmentglassesconcepts-190928233830/85/Light-Treatment-Glasses-52-320.jpg)
Uploaded byPetteriTeikariPhD
Light Treatment Glasses
1) The document discusses various light delivery glasses and visors that can be used for light therapy applications such as myopia treatment, jetlag management, and seasonal affective disorder. 2) It provides examples of existing commercial products like Ayo, Lucimed Luminette, and Re-Timer glasses. It also discusses prototypes from companies like Seqinetic and Yumalite. 3) The document explores technical approaches for light delivery like MEMS mirrors, waveguides using diffractive optics, and prior art patents related to near-eye and augmented reality displays.
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Light Treatment Glasses
- 1. Light Treatment Glasses High-level conceptsFor applications suchas: 1)Myopia 2)Jetlag 3) Seasonal Affective Disorder(SAD) Petteri Teikari, PhD SeniorResearchFellow UCLQueenSquareInstituteof Neurology MSc Electrical Engineering PhD Neuroscience
- 2. Smart Non- imaging optics Glasses Youcoulddosimpler light deliveryglassesfor myopiareversal/ treatmentorjetlag management? Shine blueorvioletlight totheeyebasically https://youtu.be/79bvGfolql4 US20190129204A1 Myopia treatment device Inventor KazuoTsubota, KazunoNEGISHI, HidemasaTorii, Toshihide KURIHARA, Current Assignee:TsubotaLaboratoryInc https://patents.google.com/patent/US20190129204A1/en thelighttransmissionpartofthedevice transmits violetlighthavinga wavelengthwithinarangeof 360nm to 400nm inclusiveandthustreatsmyopia. http://doi.org/10.1001/jamapediatrics.2019.0278 https://doi.org/10.1016/S0140-6736(07)60529-7
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- 4. Light Delivery Visor-1993 https://doi.org/10.1016/0165-1781(93)90005-2 http://doi.org/10.1038/npp.1993.17 The lightwas delivered by a light visor developed collaboratively by investigators at the National Institute of Mental Health and at Jefferson Medical College, and was manufactured and supplied by Bio- Brite, Inc. (Bethesda, MD).
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- 6. Light Visors Lucimed Luminette Luminette(Belgium) https://www.myluminette.com/en £200.10 http://www.sad-lighthire.co.uk/product/new-lucimed-luminette-2-sad-light-therapy-visor-featured-in-the-press-/176 Not found from Google Patents? With Lucimed nor with Luminette
- 7. Light Visors Re-Timer https://motherboard.vice.com/en_us/article/vv7ddd/i-tried-to-hack-my-circa dian-rhythm-with-a-bright-light-therapy-headset https://www.amazon.com/ReTimer-Light-Therapy-Glasses- Generation/dp/B01GGN0PAO#customerReviews https://www.re-timer.com/the-product/about / Samegroup developing https://thim.io/
- 8. Light Visors Seqinetic Seqinetic 'wearablelight'glassesmeant to combat winterdepression SeqineticisKickstarter-ing apairofLED"'sun' glasses" thatsheddiffusedlightallover your eyeball region. Seqinetic promises to have working prototypes in its labs, but needs the Kickstartercash forsome injection-moldedpartsandaprintedcircuitboard. By Paul Miller@futurepaul Dec 12, 2011, 4:15pm EST https://www.kickstarter.com/projects/37801615/seqinetic-wearable-light-to-fight-the-winter-blues
- 9. Light Visors BioBrite BioBrite DeluxeLight Visor, deprecated? http://www.biobrite.com/applications/try-the-award-winning-light-visor/
- 10.
- 11. Light Glasses Propeaq LightGlasses USED FOR ATHLETES TO WIN MEDALS IN RIO 2016 http://www.biobrite.com/applications/try-the-award-winning-light-visor/ £260 http://www.sad-lighthire.co.uk/product/new-propeaq-light-glasses-used-for-athletes-to-win-medals-in-rio-2016/385
- 12. Contact Lens Microdisplays The activecontact lens was tested in a rabbits eye with no observed adverse effects. (Professor Babak A. Parviz, University of Washington ) LED-microarrays http://ele.aalto.fi/en/research_groups/markku_sopanen_group/optoelectronics_research/led-microarrays/
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- 16. Light Therapy BusShelters The UmeåBus Stops Helps Relieve Depression During Winter https://www.trendhunter.com/trends/umea-bus-stops
- 17.
- 18. Light Therapy Lightwear “Lightwear” consistsof a series of garment- and accessory-based light-emitting wearables designed to administer light therapy for on-the-go treatment of Seasonal Affective Disorder (SAD). To date, there have been few successful products developed for wearability and portability to ease the uncomfortable nature of traditional light box treatment. Lightwear explores the integration of light into 3D printed and textile substrates to create fashion-forward wearables to address issues related to BLT efficacy, usability, adoption, and convenience. This research was presented at TEI 2015 and received Best Paper at PervasiveHealth 2016. This work was developed at Microsoft Research by Halley Profita (CS PhD at CU Boulder), Asta Roseway, and Mary Czerwinski (…). https://halleyprofita.wordpress.com/projects/
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- 20. Additive Manufacturing for Eyewear Customize thelooks andcomfort from 3D scans The global eyewear market is a $180billion market dominated by one company Luxottica. If we look at today’s deal whereby BASFisinvesting$25million in Materialise we could see this as a deal to industrialize 3D printing for many products. But, given Materialise’s lead in eyewear, is this perhaps the entire play for BASF? Maybe a chemical company wants to leapfrog polymer, manufacturing, parts production and eyewear manufacturerstosellmasscustomizedeyewear? Materialise and BASF Future Leaders in Customized 3D Printed Eyewear July19, 2018byHannah RoseMendoza3DDesign3DPrintingBusiness https://3dprint.com/219767/d-materialise-basf-leaders-in-customized-3d-printed-eyewear/
- 21. Additive Manufacturing for Eyewear Customize thelooks andcomfort from 3D scans 3DNA - face scanning for bespoke eyewear - 100% Optical tech showcase Feb 6, 2019 https://youtu.be/kdKgGWhw_r0 Optometry Today The software, which was developed by the Hong Kong-based optical solutions company Eye-DNA, takes a 3D face scan of the consumer, who then works with an optical professional to design a bespoke piece of eyewear. https://www.aop.org.uk/ot/industry/eyewear-and-lenses/2019/02/0 6/waterside-laboratories-partners-with-3dna
- 22. Additive Manufacturing for Eyewear 3D printersand 3D scanner quite low- cost already, at least for quick prototyping But the most notable update the Snap Spectacles 3 feature is "under the hood" in the form of a second HD camera, which allows the camera to record in "3D." More specifically, it means that the glasses can recreate stereoscopic depth the way that human eyes do.
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- 24. Tutorial Head-UpDisplay “fighterjetoverlay” Waveguidecombiners:These are sophisticatedand hard to design type of combiner glasses. Waveguide combiners work on non-conventional techniques like holographic and diffractive optics, unlike conventional combiners which use the concept of reflection and refraction. https://www.embitel.com/blog/embedded-blog/how-combiner-glass-in-head-up-display-hud-works
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- 26.
- 27. Lasers as light sources Withsome schedulefor sure coming downin price,thesolid- statelasers https://www.slideshare.net/PetteriTeikariPhD/laserbased-general-white-light-lightin g
- 28. Light Glasses Waveguides: Thin film, diffractiveoptics concept HolographicWaveguides: What You Need To Know To Understand The Smartglasses Market https://uploadvr.com/waveguides-smartglasses/ Diffractive waveguide providing structured illumination for object detection US9726540B2 Inventor: Milan Momcilo Popovich; Jonathan David Waldern; Original Assignee: DigiLens Inc
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- 30. Light Glasses Waveguides: Thin film, diffractiveoptics concept https://doi.org/10.1364/OE.25.00213 0 Citedby 7 Related articles Conclusion A compact design of see-through NED, featuring a pair of corrective lenses coated with multiplexed volume holograms, has been proposed. Based on the simulation, its optical performance including DE, FOV, MTF, and distortion has been studied. By eliminating the need for extra glasses or contact lens, this type of see-through NED could be particularly appealing to the users who are more or less visually impaired. In addition to myopia, our future work will extend to hyperopia, presbyopia, astigmatism, and combinations of different refractive anomalies.
- 31. Light Glasses Waveguides: Thin film, diffractiveoptics concept OpticsLetters Vol. 43, Issue 4, pp. 767-770. (2018) https://doi.org/10.1364/OL.43.000767 The transparent property of the holographic optical element enables the optical see-through feature, making the proposed near-to-eye display suitable for augmented reality applications. Optical experiment confirms that the proposed display can present always-focused images on top of the real environment with 9.2°(H)×5.2°(V)9.2°(H)× 5.2°(V) field of view, and 9 mm (H)×3 mm (V)9 mm (H)×3 mm (V) eyebox.
- 32. Light Glasses Waveguides: Thin film, diffractiveoptics concept OpticsCommunications Volume 393, 15 June 2017, Pages 143-151 https://doi.org/10.1016/j.optcom.2017.02.047
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- 34. ‘Smart Glasses’ Augmented Reality glasses inother words https://www.wired.com/review/focals-by-north-smart-glasses/ https://youtu.be/3ikFF_6mneE https://www.theverge.com/2019/9/25/20883 892/amazon-echo-frames-smart-glasses-fea tures-specs-alexa Sep25,2019 https://www.cnbc.com/2019/09/17/facebook-enlists-ray-ban-maker-luxotti ca-to-make-orion-ar-glasses.html Facebook has been working to develop augmented reality glasses out of its Facebook Reality Labs, for the past couple of years, but struggles with the development of the project have led the company to seek help. Now, Facebook is hoping a partnership with Ray-Ban parent company Luxottica will get them completed and ready for consumers between 2023 and2025, according to peoplefamiliar. https://www.androidpit.com/huawei-pre sents-new-wearables-to-make-you-fit-a nd-handsome April, 2019
- 35. ‘Smart Glasses’ the ‘techstack’ goeswaybackfor these devices Atsomepointsomeone should have creatively combined existing “knowledge base”for something novel that becomespatentable with commercial potential Systems,devices,andmethodsforeyeboxexpansioninwearableheads-up displaysUS9989764B2CurrentAssignee: North Inc https://patents.google.com/patent/US9989764B2/en Cited by (23) - Patent citations (130) - Non-patent citations (33) US6008781A1992 Virtual retinal display US6027216A 1997 Eyefixation monitor and tracker US20120002256A1 2009Laser Based ImageDisplaySystem US20140232651A1 2013Cascadingopticsinoptical combinersof head mounted displays US20150362734A1 2013Transflective holographic film for head worn display US10303246B2 2016Systems, devices, and methodsfor proximity-based eyetracking US10365548B2 2016Systems, devices, and methodsfor focusinglaser projectors Viirre et al. (1998), "TheVirtual Retinal Display:A New Technology for Virtual Reality and Augmented Vision in Medicine,"Proc. of MedicineMeetsVirtual Reality. Silverman et al. (2003), "58.5L:Late NewsPaper: Engineeringa Retinal ScanningLaser DisplaywithIntegrated Accommodative Depth Cues,"SID 03Digest. Liaoet al. (2009), "The Evolution of MEMSDisplays,"IEEE Transactionson Industrial Electronics56(4):1057-1065. Kressetal. (2013), "Areview of head-mounted displays(HMD) technologiesand applicationsfor consumer electronics,"Proc. of SPIE 8720:87200A-1-87200A-13.
- 36. MEMS* ”everywhere” In practice:Same optical performance canbeachievedinway smallerformfactor *MEMS, Micro-Electro- Mechanical Systems MEMS MirrorsforOptical Coherence Tomography and Confocal Microscopy byDaniel Lovell 11 February2019 https://www.novuslight.com/mems-mirrors-for-optical-coherence-t omography-and-confocal-microscopy_N8994.html LiDARforeveryone–MEMSmirrorsenable LiDARsensorsforthemassmarket June28,2019 https://www.blickfeld.com/lidar-for-the-mass-market/ MicroVision to ship smallconsumerMEMS lidar https://youtu.be/NSaUusMzwlA
- 37.
- 38. Thin curved eyepiece for see-through headwearable display https://patents.google.com/patent /US9366869B2/en https://patents.google.com/patent /US9395544B2/en https://patents.google.com/patent /US9442291B1/en i.e. Google Glass
- 39. Peripheral treatment for head-mounted displays https://patents.google.com/patent /US8212859B2/en Apple Inc Inventor:JohnG. Tang, Anthony M. Fadell , 2006
- 40.
- 41. Compact, head- mountable display device withsuspended eyepiece assembly https://patents.google.com/patent/US 7843403B2/en Inventor: Mark B. Spitzer , 1999 CurrentAssignee: Google LLC Original Assignee:MicroOptical Corp
- 42. Illumination systems for eyeglass and facemask displaysystems https://patents.google.com/patent/US 6724354B1/en Inventor: Mark B. Spitzer , 1999 CurrentAssignee: Google LLC Original Assignee:MicroOptical Corp
- 43. Eyeglass display lens system employingoff- axis optical design https://patents.google.com/patent/US 6353503B1/en Inventor: Mark B. Spitzer , 1999 CurrentAssignee: Google LLC Original Assignee:MicroOptical Corp
- 44. TL;DR RelatedTech The engineering ofplasmonic colours is a promising, rapidly emerging research field that could have a large technological impact. We highlight basic properties of plasmonic colours and recent nanofabrication developments, comparing technology-performance indicators for traditional and nanophotonic colour technologies. The structures of interest include diffraction gratings, nanoaperture arrays, thin films, and multilayers and structures that support Mie resonances and whispering-gallery modes. http://doi.org/10.1038/natrevmats.2016.88 “the pixels of color imaging can be extremely small and the resolution can be improved up to the diffraction limit” https://doi.org/10.1039/C5NR00578G
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- 48. Light Watcher www.euclock.org PicturebyPetteri,fromGroningen,Summer2007 Master’sstudydonebyVincent Rousseau https://www.dropbox.com/s/3plkkhwrvwxhwf z/MastersThesis%20-%20Rousseau%3B200 9%3BLightWatcher.pdf?dl=0 Howmuch light doyouget?: estimating daily lightexposu re using smartphones Cited by 13 [PDF] chronobiology.ch Estimation of human circadian phase via amulti-channel ambulatory monitoring system and amultipleregression model Cited by 27 All 11 versions[PDF] researchgate.net An improved method for estimating human circadian pha se derived from multichannel ambulatorymonitoring and artificial neural networks Cited by 25
- 49. Light Sensing Customvisiblerange sensors Foragoodresearchtool(atleastthe“Pro”version)couldcontainone sensorpereachphotoreceptor: ● Rodsensitivity V’(λ) ● S-cone sensitivity “blue cones” ● M-conesensitivity “green cones” ● L-conesensitivity “red cones” ● “Melanopic” sensitivity “blue cones” =5channels ● Photopic sensitivity V(λ) is a linear combination of M and L cone sensitivities ● Mesopic can be computed from V’(λ) and V(λ), but it is a nonlinear function depending on the intensity CORNEAL RETINAL
- 50. Light Sensing Customvisiblerange sensors Formoreexoticsensitivities,youcouldleaveopen hardwaredesignso thatphotopigmentintermediatescouldbeadded ● MetarhodopsinII(~380nm) that could play rolewith BlueLight Hazard (Grimm et al. 2000, 2001), and in photoreversal (Hubbardand Kropf1958) ● M(476nm) and Estates(453nm) of melanopsin (in vitro mouse, Emanuel et al. 2016; purified pigment, Matsuyama et al. 2012). R-stateat 471 nm. =3 channels
- 51. Light Sensing Customvisiblerange sensors Ifthis camewithelectronically controlledlensdensity filter (electrochromic glass) with ageas aparameter, it would bequitenice :) Or somebroadband MEMS filter. Images of electrochromic glass devices and optical transmittance spectrum: (a) electrochromic glass with transparent characteristics in a bleached state, (b) electrochromic glass with blue translucent characteristic in a dyed state, and (c) the glass has transparency of 82% and 21.1% in bleached and dyed states. - Chien Chon Chen (2013) http://spie.org/newsroom/0196-electrochromic-safety-glass-f or-smart-window-applications?SSO=1
- 52. Light Sensing Auxiliarysensors UV(A/B) UVSensingforoutdoordetectionanderythremaquantification? Does UVplay a rolein myopia? D-vitamin synthesis from sunlight? Action Figure 7. Approximate depth for penetration of optical radiation in fair Caucasian skin. Action spectra for erythema in human skin according to CIE [162] and Anders et al [166], for SCC in mouse skin according SCUP [172] and for CMM in fish according Setlow et al [176]. The solar spectrum from extreme UV to far infrared. The illustration shows the spectrum of solar radiation from 10 to 100 000 nm (dark blue), its variability between solar maximum and solar minimum (green) and the relative transparency of Earth’s atmosphere at sea level (light blue). The red dashed line is a blackbody fit to the solar spectrum. At wavelengths shorter than about 300 nm, there is a relatively large variation in the Sun’s extreme UV and x-ray output (greater than 1%), but the Earth’s atmosphere is nearly opaque at those wavelengths (courtesy Judith Lean).
- 53. Wearable UV Moni1tors Techquiteeasy,justlog outputofamonolithic UVsensor(e.g. Si1132) pluggedtoaMCU(e.g. Arduino)withsome memoryandabattery L'Oréallaunches wearable sun exposuremonitor throughApple mobihealthnews.com https://www.glamourmagazine.co.uk/article/la-roche-posa y-my-skin-track-uv-review
- 54. Light Sensing Auxiliarysensors Infrared Forspectralidentificationorsomecorrection? Spectralidentificationoflightingtypeandcharacter.-NCBI https://www.ncbi.nlm.nih.gov/pubmed/22319336 byCD Elvidge - 2010 - Cited by 120 “Our conclusion is that it is feasible to identify lighting type and make reasonable estimates of Luminous Efficacy of Radiation (LER) and Correlated Color Temperature (CCT) using four or more spectral bands flown on the Landsat Thematic Mapper (TM) withminimal spectral overlap spanning the 400 to 1000 nm region.”
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- 56. Light Sensors Lessindustrialdemand forUVsensors (ambientlightsensors typicallyusedinmobile phones highvolume→high volume manufactured) https://www.slideshare.net/Pe tteriTeikariPhD/arduinobased- circadian-light-logger High-Level Integration in MAX44005 7 Sensors in a 2mm x 2mm x 0.6mm Package (used by us in US, now deprecated though and replaced by MAX44009
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- 58. RGB Light Sensors Intersil’s ISL29125? https://www.intersil.com/en/products/optoelectr onics/ambient-light-sensors/light-to-digital-sens ors/ISL29125.html 3.02SGD/piecefor100units https://www.mouser.sg/ProductDetail/Renesas-I ntersil/ISL29125IROZ-T7?qs=8EBwJ8mibj2u1sv ZyuG5jQ%3d%3d Can beused together with MAX44009 6Ld ODFN (1.65x1.65x0.7mm) package Two optical sensitivity ranges Range 0 = 5.7m lux to 375 lux Range 1 = 0.152 lux to 10,000 lux
- 59. RGB Light Sensors MAZET AMS TCS3430 RGB(XYZ) +2Infrared bands Size: 2.41 x 1.75 x 1.00mm http://www.mazet.de/eng/Products/Light-Sen sors/Color-Sensors/TCS3430 https://en.wikipedia.org/wiki/CIE_1931_color_space
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- 61. Light Sensors AmbientLightsensor Only “photopiclux” measured MAX44009 Can beusedfor melanopic andscotopicmeasurements with custom filters Drawn by Petteri already in EagleCAD if need to be used in a design daysiduino.lbr The MAX44009 ambient light sensor features an I²C digital output that is ideal for a number of portable applications such as smartphones, notebooks, and industrial sensors. At less than 1µA operating current, it is the lowest power ambient light sensor in the industry and features an ultra-wide 22-bit dynamic range from 0.045 lux to 188,000 lux. https://www.maximintegrated.com/en/products/anal og/sensors-and-sensor-interface/MAX44009.html https://www.maximintegrated.com/en/products/sens ors-and-sensor-interface/MAX44009.html Device Address Options 1001 010x and 1001 011x → We can only have 2 sensors per MCU
- 62. Light Sensors Multichannel onesbeyondRGBs MazetMMCS6CS FOR MONKEY and CHICK cages? http://www.mazet.de/eng/Products/Smart-Light-M anagement http://www.mazet.de/eng/Products/Spectral-Sensing
- 63. Light Sensors Digitalambientlight sensors withUVaswell BothUVAandUVBina small package. 2.0x1.25x1.0mm Arduino library: https://github.com/schizobovine/VEML6075 http://www.vishay.com/ppg?84304 https://www.mouser.com/pdfdocs/designingveml6075.pdf, $2.73 unit price/10pcs https://github.com/schizobovine/VEML6075/blob/ master/VEML6075.h VEML6075 ArduinoLibrary Arduino, et al, library for the Vishay VEML6075 UVA/UVB i2c sensor, a cheapandeasy alternativetotheSi1145 and friends (which aren't true UV sensors) and the raw photodiode GUVA-S12D (and it's rare cousin the GUVB- S11D). The library handles the gnarly calculations necessary to spit out a UV index value.
- 64. Light Sensors Digitalambientlight sensors withUVaswell White+ IR + UVA + UVB Si1133 is provided in a 10-lead 2 x 2 mm QFN package. https://www.silabs.com/products/sensors/optical/si1133 PhotopicLux +UVA+UVB Broadcomm APDS-9200 https://www.broadcom.com/products/optical- sensors/ambient-light-photo-sensors/apds-92 00 https://learn.adafruit.com/adafruit-ve ml6070-uv-light-sensor-breakout/ove rview Si1133/53 Multi-Use Evaluation Kit 115xOPT-EXP-EVB The 115xOPT-EXP-EVB makes it easy to evaluate all of the basic optical sensor types that Silicon Labs supplies, including: Basic Proximity (Prox) and Ambient Light Sensing (ALS), Gestures, Ultraviolet (UV) light sensing, Long Range Proximity and OptimizedDaylightProximity. https://www.silabs.com/products/development-t ools/sensors/si1133-53-optical-evaluation-kit $37.50
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- 67. LiPo Battery HighCapacity Longchargetime thesize? https://www.alibaba.com/showr oom/3.7v-30mah-lipo-battery.ht ml Howell 102323,30 mAh; Max Current: 40mA(Charge & discharge) → 45 min fastest chargest time 1.0 x 23.0 x 23.0mm, < 1g; US $1-2 / Piece DTP301020 30 mAh 3 x 10.5 x 20.5mm US $0.8-1.5 / Piece
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- 69. Supercapacitors LowerCapacity Quickchargetime Thesize? https://www.mouser.sg/Power/Supercapacitors/_/N-6uivw?P=1z0z7ymZ1z0iz65Z1yz tzayZ1yfsyh2Z1yfs3v1&Rl=6uivwZergjZ1yo199uZ1yx4ariSGT Murata Supercap DMF4B5R5G105M3DTA0 1F, 5.5V, $18.75 https://www.mouser.sg/ProductDetail/Murata-Electronics/DMF4B5R5G105M3DTA0?qs=sGAEpiMZZMsCu9HefNW qpj5BjJPpSZC2%2fdHmdtj6KPAEBM%252bcrZQucg%3d%3d
- 70. Battery Charger Circuits? QuitesmallIC All height of0.625 mm Available in small 2.8-mm × 2.8-mm 49-ball WCSP or 4-mm × 4-mm VQFN- 24 Packages or available in 3.0 × 3.2- mm DBSGA http://www.ti.com/power-management/battery-management/charger-ic/products.html#p1152= 1;1&p338=Li-Ion/Li-Polymer&p1341=I2C&p2954=DSBGA;VQFN&p1811=0;2.7613635
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- 73. Example Thereare32pinsinthe “ArduinoZero”MCUfor asmall32-QFN package(5x5mm) Somesensorseven smaller fine→ highvolume granularityforsolder pastealsorequired
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- 75. WIFI/BT Connectivity Arduinofamily The Maker Faire2019 is now taking place in San Mateo, California, United States, and Arduino has made an habit of announcing new products during the events. This year is no different as the company has announced a new Nano Family with four boards: ● ArduinoNanoEvery powered by a Microchip ATMega4809 AVR microcontroller ● Arduino Nano 33 IoT with secure internet connectivity thanks to a U-blox ESP32 WiFi module and ATECC608A HW crypto chip ● Arduino Nano 33 BLE with Bluetooth connectivity via U-blox NINA B306 module based on Nordic Semi nRF52480 Bluetooth 5.0 chip ● Arduino Nano 33 BLE Sense with a design similar to Nano 33 BLE but some extra on-board sensors. Sensors – 9-axis accelerometer, gyroscope, and magnetometer, temperature, pressure, humidity, light, color, gestures sensors, digital microphone Arduino Nano 33 BLE Sense sells for $29.50 without headers, and $31.50 with headers.
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