The Ochin Tiny Carrier Board V2 is designed for the Raspberry Pi CM4, featuring a powerful Quad-core Cortex-A72 CPU and GPU, big RAM size, CODECs, and Graphic Accelerators. It is perfect for robotics, home automation, and IoT projects. Note: Raspberry Pi CM4 not included.

Feature

• High-performance:BroadcomBCM2711,QuadcoreCortex-A72(ARMv8)[email protected]
• HighResolution Supported:265 (HEVC) (up to 4Kp60 decode), H.264 (up to 1080p60 decode,1080p30 encode) and OpenGL ES 3.0 graphics
• RichInterfaces: 1USB2.0port (highspeed); MIPICSI-2:12-laneMIPICSIcameraport, 14-lane MIPI CSI camera port; 1USART, 3UART, 1I2C port, 1SPI port, Analog Video Output
• StrongCompatibility: Compatible with Raspberry Pi Compute Module(CM4) with faster eMMC flash with up to 100 MB/s transfer rate,4xfasterthanCM3+
• CompactDesign:SamesizeasCM4 module,55mm40mm4.7mm

Description

What is presented on this page is version 2 of the now well-known carrier board for integrated robotics ochin_CM4. In the new version, all the main features already present in v1 are retained, plus many innovations that make it more flexible and interesting for even more applications.

Some examples are the presence of the microHDMI port, which allows it to be used together with a monitor and therefore makes it usable not only in headless devices but also in user-side applications. A transformerless Ethernet interface is also available, in case one wants to connect to a device equipped with an Ethernet interface.

Inversionv2,asmallexternalboardhasbeenaddedthatallowstheflashtobeprogrammed,butalsoitsuseduringnormaloperationthankstoanRGBLEDandauserbutton,makingitveryusefulasaminimalinterfacetothesystem(oncetheflashhasbeenprogrammed,youcansimplydecidenottoconnectitifnotinuse).

Thefollowingtablesummarisesthenewfeaturesinochin_CM4v2comparedtov1.

TheboardiscompatiblewithallRaspberryPiCM4modulesequippedwitheMMC.Dependingonyourneeds,youcanselectaCM4modulewithanSDRAMof1GB,2GB,4GB,or8GBandtheeMMCof8GB,16GB,or32G,withorwithouttheWi-Fi/BT4connection.

The Ochin v2 board has also been tested to work with OpenHD open source software.Thanks to OpenHD it is possible to transmit an HD video stream with low latency from a mobile station (rover, drone, plane, etc ..) to a ground station. This was possible thanks to the enormous work of the OpenHd community which we thank very much.

There are rich interfaces available on board including 1x microHDMI port, 4USB 2.0 port (highspeed),12-lane MIPI CSI camera port, 14-lane MIPI CSI camera port, 3UART, 1I2C port, 1SPI port, and Analog Video Output, 1x 100baeT Ethernet port, all of which enable the Ochin CM4 to connect to external hardware at lower abstraction layers, closer to the physical world.

In terms of external dimensions, it’s the same as the CM4 module which adopts a completely new mechanical standard. The overall footprint is reduced, resulting in a smaller and more compact form factor suitable for integration into products.

Inthisrepository,youcanfindthemanualoftheboard,aquickstartguideforflashingtheCM4module,andaguidewithsometipsonhowtomaketheconnectionstotheochinboard.

ItisimportanttoreadthembothbeforeturningontheOchinCM4v2board,toknowitscharacteristicsandaboveallthesequenceinwhichthesignalsarepresentontheconnectors.

Itwillbebettertousethiscarrierboardwiththeheatsink:

AluminumAlloyCNCHeatSinkwithoutFanforRaspberryPiCM4Module:Itprovidesbetterheatdissipationthroughpassivecoolingwhileprotectingthecomputemodule

AluminumAlloyCNCHeatSinkwithFanforRaspberryPiCM4Module:ItalsoprovidesfastercoolingthroughactivecoolingusingaPWMfan.

Herearesomecameramodulesthatyoucanusetogether:

RaspberryPiCameraModuleV2: It carries an 8-megapixel Sony IMX219 image sensor with high resolution and great performance.

RaspberryPiWideAngleCameraModule: Raspberry Pi Wide Angle Camera Module is a low-cost Fisheye Lens, wider Field View, Camera module, designed for Raspberry Pi.

IMX219M12/CSmountCMOSCameraModule:ThisIMX219CMOScameramoduleisbasedonthehigh-resolutionSonyIMX219sensorandsupportsbothM12CSmountlenses.

Moreover,thisOchinCM4carrierboardisperfectforyourroboticprojectduetothefollowingfeatures:

ItscompactdesignwhichhasthesamesizeastheRaspberryPimodule

Ochin_CM4v2 embeds a dc-dc regulator that provides up to 7Amp. You can supply the board directly by connecting a LiPo battery (from 3,5V to 36V) and it will also supply the connected devices, even for a power-hungry USB device.

OntheOchin_CM4v2board,thereisaGHSconnectorforalmosteveryperipheral,nomorepickingupthesignalfromastripandsharingthegroundsandsupplypins.Inrealapplicationsyouwantaconnectorwithsignalsandsupplyforeveryperipheral,itmorecleanandsafe!

Ochinhasacurrentswitch on the USB VBUS, so the +5V on the USB will be cut if the drawn current reaches the threshold of 3A. It’s a protection circuit necessary to keep the CM4 on if you have a short on the USBs devices.

Ochin_CM4hastwoCSIcameraconnectorsthatyoucanusefortwo2CSIcamerasandothersonthe4xUSBsifyouneedthem.

HereweareintroducingthisnewochinCM4v2carrierboardanditsstory!FlavioAnsoviniisanenthusiastofelectronics,robotics,andprogramming,andinrecentyearshehasappliedhisskillstotheworldofRCmodelsanddrones.TomakethemostoftheRaspberryPiCM4modulehedecidedtocreateacarrierboardorientedtorobotics,drones,IoTdevices,andingeneralembeddeddevices.

TheOchinCM4hasbeenlicensedtoSeeedtomanufactureandsell.FlaviowillprovidethetechsupportandSeeedwillfulfilltheorderwithhardwarequalityguaranteed.

Application

• Audio/videomanipulationandstreaming
• Neuralnetworks
• Machinelearning
• Computervision
• Robotics
• Drones
• Homeautomation
• IoTprojects

Specification

HardwareOverview

PartList

FAQ

1.Justwondering…whichvarietyoftheCM4Module(withEMMcmemory,withMicroSDcard,withorwithoutWiFi,with2,4,8GBRSMispresumablythebestbet?

Answer:EMMcismandatory,Ochinboarddoesn’thavethesdcardheader.Thereasonswhyare:savespaceforotherconnectors(iwantedtokeepthesamesizeofthecm4),emmcismuchfasteranddurable,andtheinterfaceisusedforemmcORsdcard(cm4withEMMcdoesn’tworkwithsdcard).IfyouwanttouseOpenHD16GBisenough(maybe8GBbutnotsure).I’malsodevelopingansw,totallydifferentingoalandtypefromOpenHDanditmayneedmorespace,I’lltellyoumoreverysoon.AbouttheRAM,OpenHDguyssaythat1GBisenough,withotherswyoumayneedmore,dependingonwhatyouwanttodo,forexampleforcomputervision,machinelearning,etc,moreisbetter.Inmyopinion,16GBEMMc2GBRAMisagoodoption,butifyouwanttodevelopswyoubettergoto32GB.

2.ThismodelcouldbeconnectedbyUSBtoamobileortabletandhavevideoanddataintheQgroundcontrolapporOpenHDApp,right?

Answer:ThisisacarrierboardfortheRaspberryPiCM4.IfyouflywithOpenHDyoucanconnectthesmartphonetothegroundstation

3.ThismodelcouldbeconnectedtoanHDMIdisplayandbecomeagroundstationitself?

Answer:ThankstothemicroHDMIconnectoritsnowpossibletoconnectittoadisplayandusetheochinasagroundstation,andconnectingaJoysticktooneoftheavailableUSBsitalsobecameanAIOcontroller.

4.HowdoIremovetheCM4fromtheOchinCM4?

Answer:PrintandusetheextractorfortheCM4moduleifyoudon’twanttobreakthemezzanines,youcanfindthe.stlinthe”3d/Coversturretsandextractors”sectionofthisrepository.

5.WhatIsSeeedFusionLicensedProductsProgram

Seeedlicensingmeansthatthelicensor(cooperativepartner)grantsitsownproducts(softwareorhardware),trademarks,brands,etc.tothelicensee(Seeed)intheformofacontract.Seeedwillassistwithallelectronicsmanufacturingincludingstructuralparts,testing,certification,provideengineeringandqualityassuranceservices,andpromotion,salesanddistributionaroundtheworldusingSeeedsownnetworkandchannels.Seeedwillensurethatyourproductiswelllookedafterfromstarttofinish.

ECCN/HTS